actually, You don't have to worry about saving the gas. I'll do fuel pumps on trucks all day long. there are 8 bolts on the bottom of the bed, take them out, you also have to remove the bumper, and the pigtail that connects the bed lights to the frame. Don't forget the ground wire on the filler tube either. Then get 3 or 4 friends and lift the bed off, and Viola` there's the top of the tank, doesn't matter if it's full or empty. pull the sending unit out the top, change the pump and your done, reinstall the bed in reverse order.

Yeah that kinda sucks...
--
Nothing. Well, a '96 GMC 2500HD, 6.5 diesel, auto, and 167k miles. Extended cab, Long bed. Land yacht.

WickedS6 Circa 2001

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Posted By: TigerZ On: 05-02-2008 @ 15:35:11     Reply | Top | Edit

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alright i got the bed off, replaced the fuel pump. same issue

if i hold it at any RPM it slowly stalls.
if i floor it from idle it immediately stalls.

im off to napa to get a MAP sensor. im hoping this fixes it.
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

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Posted By: TigerZ On: 05-02-2008 @ 17:43:58     Reply | Top | Edit

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i just replaced the MAP sensor and TPS sensor its a little better but stil stalls out. however it no longer takes many many cranks to turn it over, its back to normal on starting. im pulling all the plugs again and inspecting them

bbl

EDIT: i pulled all the plugs and some are pretty dark and most are shiny. What im thinking happened was my TPS or MAF sensor went out and flooded all the plugs because of to much fuel. im off to Napa AGAIN to buy new plugs and ill post my progress.
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

[ Edited on 05/02/2008 @ 18:20:12 ]

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Posted By: TigerZ On: 05-02-2008 @ 19:50:39     Reply | Top | Edit

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same issue.


AHHHHHHHHHHHHH
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

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Posted By: LeadFootedRacer   On: 05-02-2008 @ 21:42:37     Reply | Top | Edit

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that sucks you had to put all that work into taking the bed off for nothing.

is your TPS adjustable like on tpi?
--

--Fbody.Com Site Donator--

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Posted By: TigerZ On: 05-02-2008 @ 23:10:16     Reply | Top | Edit

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i replaced that already
and no my idle is not adjustible
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

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Posted By: LeadFootedRacer   On: 05-02-2008 @ 23:27:49     Reply | Top | Edit

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i know you replaced it, and i wasn't asking if the idle was adjustable.

on TPI cars, the TPS is adjustable.

Idle Air Control
Tools needed:

Torx bit # T-20
Paper Clip
Small Punch

Take the paper clip and open it up and form it into a big "U" shape. Insert the clip ends into the ALDL in the 'A' and 'B' pins.

Turn on the ignition, but don't start the engine. Wait 30 seconds. Now, go remove the connector from the IAC.

Start engine. You are now going to adjust "minimum air". There is a Torx screw on the side of the throttle body. This is what needs to be turned to adjust minimum air, or more commonly known as "idle speed". It comes from the factory with a protective metal cap over it. If the cap is still there, use a small punch to knock it out. Set the idle speed to 450 rpm, rotating the Torx screw clockwise to raise rpm, and counter-clockwise to lower rpm. Once the idle rpm is set, turn off the engine.

Re-connect the connector onto the IAC. Start engine. Idle speed is now once again governed by the ECM, but your idle should be smooth and steady, approximately 600 rpm in Drive (for unmodified cars).

If you set an SES light by having the IAC disconnected, then after shutting down the engine disconnect the negative battery terminal. Wait 5 minutes. This will clear the ECM of all trouble codes. Re-connect the battery and drive the car for 20 minutes to allow the ECM to relearn your driving style.

Throttle Position Switch (TPS)
Tools needed:

Digital Volt-Ohm-Meter (VOM)
Jumper Wires (make your own)
Auto Xray Scanner (if available) will eliminate the need for VOM and jumper wires.

Turn on ignition, but don't start the engine.

With a scanner: plug in the scanner and read the TPS voltage. It should be 0.54Volts +/- 0.075Volts

With VOM and jumper wires: disconnect the connector from the TPS. Using your jumper wires, make a connection allowing some room for the VOM terminals to contact the jumper leads and read the TPS voltage.

If out of spec, loosen the two screws holding the TPS to the throttle body, and slightly rotate the TPS up or down, reading the voltage until it comes into specification. Tighten screws. Using the throttle lever, rotate the throttle to WOT (wide open throttle). The TPS voltage should be over 4.0 volts. Close the throttle again, and then slowly open it to WOT, observing the voltage reading. It should increase progressively and in a linear fashion. If it sticks or jumps or falls off at all while doing this check, that could mean a bad TPS switch and could be a cause of stumbling and driveability problems.

After setting the correct voltage, turn off ignition switch. Remove jumpers/scanner and reconnect the TPS connector as required.


just grabbed that off TGO. thats for the TPI, but i can't imagine TPI was the only one that was adjustable.
--

--Fbody.Com Site Donator--

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Posted By: MadMatter4 On: 05-02-2008 @ 23:45:46     Reply | Top | Edit

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My money would be on the Idle air control valve (IAC)
--

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Posted By: TigerZ On: 05-02-2008 @ 23:51:36     Reply | Top | Edit

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i forgot to add it but yes i replaced the IAC valve a few weeks ago as part of my tune up. and replaced the TPS sensor today trying to find the problem, still same issue.
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

[ Edited on 05/03/2008 @ 00:00:08 ]

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Posted By: lodlaiden On: 05-03-2008 @ 00:55:06     Reply | Top | Edit

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This might seem like out of left field, but have you checked the timing? I have a lil pos ranger that the timing belt snapped on. I know the timing is a little off, and it surges every once in a while like it's got a rhythm that just bottoms out a little low.
--
1995 Convertible LT1 Firebird, metallic hunter green
Then: 3.4 v6, faded tan top and tan leather interior, stock as pookies.
Now: TOTALED LT1, black top, Kenwood X sound, Pacesetter mid-tubes, hi-flow cat, camaro square tips, 17" rims. MadDog Punisher transmission w/2.2k stall.

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Posted By: TigerZ On: 05-03-2008 @ 01:16:40     Reply | Top | Edit

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i want to check the timing but autozone doesnt rent them out. nor does kragen or napa. my only option is to fork out the money for one and they are not returnable.
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

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Posted By: TigerZ On: 05-03-2008 @ 17:47:29     Reply | Top | Edit

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http://www.youtube.com/watch?v=tkVWMqWEWys
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

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Posted By: useful_idi0t On: 05-03-2008 @ 17:54:45     Reply | Top | Edit

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did you check the cap and rotor to make sure it isnt broken?
--

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Posted By: TigerZ On: 05-03-2008 @ 17:56:17     Reply | Top | Edit

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replaced it a month ago, then yesterday when i took it off there were small shreds of plastic. i replaced it yesterday. same problem
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

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Posted By: TigerZ On: 05-05-2008 @ 00:39:07     Reply | Top | Edit

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my coolant is gone, and have a a cold cylinder that is getting spark.



fuck


im so depressed right now i have no idea what im going to do....
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

[ Edited on 05/05/2008 @ 00:40:52 ]

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Posted By: 95ttoplt1   On: 05-05-2008 @ 01:38:39     Reply | Top | Edit

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Dude I just had the same problem with my brothers 89 TBI. We found that the pick-up coil in the distributor was crap. New distributor and it runs like a champ.

Got the dist for free from a buddy at the junkyard, but a new pickup coil is about 15 bucks from autozone.

Hope this helps.
--

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Posted By: TigerZ On: 05-05-2008 @ 02:11:52     Reply | Top | Edit

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i just read through my manual and that coil is a bitch to replace

however. what happened to my coolant? and ive ran a spark check and that cylinder is getting a powerful spark every time

i just ran a compression test and its 180-190psi

and its just one cylinder too.....


--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

[ Edited on 05/05/2008 @ 02:14:36 ]

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Posted By: 95ttoplt1   On: 05-05-2008 @ 05:52:29     Reply | Top | Edit

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Pressure test it and see if it holds.

What do you mean by "a cold cylinder". Are you checking the header temp and found a dead hole?

What does the plug look like? Either way put a new one in. And check the wire really good. If its still a dead cylinder, swap the wire with a good cylinder.


--

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Posted By: TigerZ On: 05-05-2008 @ 13:29:33     Reply | Top | Edit

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if i run my engine for a few minutes and then spray each cylinder with a water bottle, all of the water boils off except for one. I have a spark test and its getting a nice solid spark each time. and ive already replaced the plugs. i havent done a full compression test yet on all cylinders, im going to that today.

--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

[ Edited on 05/05/2008 @ 13:33:45 ]

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Posted By: WickedS6   On: 05-05-2008 @ 15:23:06     Reply | Top | Edit

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uh, not to sound like I'm nagging, but I wouldn't put too much water on those manifolds. especially if there is a cold cylinder. A drop or so won't hurt, but if your dousing them with water, especially the ones that are next to the dead cylinder, and cool them off too quick, they may crack the manifold. just a heads up.

Also, pull the valve cover and check the springs on that cylinder, then start the truck and be sure the rockers are moving fully and the valve is coming all the way up on that cylinder. I can't see 1 cylinder making an entire motor die though, especially a V8.
--
Nothing. Well, a '96 GMC 2500HD, 6.5 diesel, auto, and 167k miles. Extended cab, Long bed. Land yacht.

WickedS6 Circa 2001

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Posted By: TigerZ On: 05-05-2008 @ 15:27:25     Reply | Top | Edit

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i just did the compression check
im gettign some weird readings

Cyl.1 = 179
cyl.2 = 187
cyl.3 = 175
cyl.4 = 188
cyl.5 = 185
cyl.6 = 170
cyl.7 = 172
cyl.8 = 183


cyl.2 is the cold cylinder.

ill do what you said and post the results.
but i still cant explain my massive coolant loss.



EDIT: i just read through my haynes manual and my standard compression should be 150psi. i think maybe i have a bad tester??
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

[ Edited on 05/05/2008 @ 20:18:44 ]

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Posted By: LeadFootedRacer   On: 05-05-2008 @ 16:16:16     Reply | Top | Edit

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thats autozone for ya. i've never heard of gaining compression
--

--Fbody.Com Site Donator--

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Posted By: 95ttoplt1   On: 05-05-2008 @ 16:26:41     Reply | Top | Edit

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Yeah but they are all even. It doesn't look like a compression problem to me. And I agreee with the one cylinder not causing the entire engine to not run.


--

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Posted By: TigerZ On: 05-05-2008 @ 20:04:45     Reply | Top | Edit

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i just drained the oil and didnt really have any evidence of coolant.
however when i was running tests i remember seeing some white smoke come out of the intake through the carb. i probably have run the motor about an hour since the actual incident. so im starting to think maybe i compressed and burnt the coolant out.

i just pulled off the valve cover of that cylinder and all the springs are good. all the rockers are tight. it looks very clean in there.
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

[ Edited on 05/05/2008 @ 20:05:28 ]

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Posted By: hurley_21_07 On: 05-05-2008 @ 20:36:32     Reply | Top | Edit

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Wow, maybe it's haunted.

Where do you get the money for all those new parts?

Dan
--
'98 Trans-AM WS6
Mods: MTI Clear Lid & Filter, Pacesetter LT's, TSP True Duals, BMR STB, BMR SFC's, 180 Thermo, LS1Edit, Sitting on Sumitomo 315's and TTII's

==Sold but NEVER forgotten: 1997 Camaro V6 - Intake, Ignition, 180 Thermo==

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Posted By: Jeremiah On: 05-05-2008 @ 20:44:02     Reply | Top | Edit

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Yeah usually coolant doesnt wind up in the oil since the oil is under more pressure than the coolant.
--
2005 GMC 1500HD 6.0L, 2006 Pontiac Grand Prix
1991 Camaro - 24 Hours of LeMons race car. Pics: ftp://72.167.14.32/24hoursoflemons

"uhmmm maybe all the dinosaurs farts caused the first ice age, and all the mammoth's farts caused the world to warm back up again. so now since we don't have anything that big all the other animals farts have taken so long to ruin the world more. interesting haha" --Fattie

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Posted By: WickedS6   On: 05-05-2008 @ 21:36:08     Reply | Top | Edit

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but it can leak into the lifter valley and proceed to wipe out bearings from there. why do you think no new motors have coolant flowing through the intake?
--
Nothing. Well, a '96 GMC 2500HD, 6.5 diesel, auto, and 167k miles. Extended cab, Long bed. Land yacht.

WickedS6 Circa 2001

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Posted By: 95ttoplt1   On: 05-05-2008 @ 21:36:19     Reply | Top | Edit

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Oil is only pressurized in the gally's, but the oil is not pressurized in the crank case. Coolant can mix with oil when there is an intake gasket leak, headgasket leak, cracked block or head.

Have you done a pressure test yet?

Also you say you have smoke comming out of the carb? I thought we were working on a TBI motor here??

Have you checked for a vaccum leak? How did you test?
--

[ Edited on 05/05/2008 @ 21:38:30 ]

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Posted By: TigerZ On: 05-05-2008 @ 22:03:11     Reply | Top | Edit

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well technically its a fuel injected carbuator
but when i would WOT it at idle it would back fire. I shut the engine off then when i opened the butterfly valves white smoke slowly came out.

no i dont have a fuel pressure test but i have replaced all fuel components. it cant be a fuel issue because i don't have multi port injection. it would affect all cylinders right?
im getting a solid spark to that cylinder and have replaced the plugs.
i have pretty much replaced all smog equipment, have 0 codes, and all hoses look fine. i did a vaccum test right at the intake and i went by my manual and my reading said internal engine wear or headgasket. Abnormal coolant loss would point in the same direction. The fact that im getting spark to that cylinder but its cold would also point there.

parts werent all that expensive, i just returned some of them today, but as for the fuel pump and regulator im just out the money. all those parts combined only ran me about $250.

Also, im not sure if my compression tester was correct but if it was, my cold cylinder is putting out the highest compression.
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

[ Edited on 05/05/2008 @ 22:03:57 ]
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

[ Edited on 05/05/2008 @ 22:08:21 ]

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Posted By: 95ttoplt1   On: 05-05-2008 @ 22:20:40     Reply | Top | Edit

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Ok coolant pressure test, not fuel pressure.

And double check the stupid stuff. Bring number 1 up to TDC on the compression and make sure you have the right post on the cap as #1, then go around the cap in firing order and triple check that everything is in the correct order, and that you numbered them in the correct direction.

You didn't check for a vaccum leak, you checked vaccum stength. You need to check for a leak. You can do this with a smoke machine, or with a can of carb cleaner or other type of product. Spray it around and listen for an idle change.

Also you can do the same with a small propane bottle, with a small tube. You can put this into the valve cover(with the PCV disconnected) to check for internal intake leaks. This is my preferred method if a smoke machine is not avalible.

When you checked the vacuum with the guage was it low? or bouncing? I think you might need to do a cylinder leak down if the coolant pressure check, and vacuum test both pass.
--

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Posted By: TigerZ On: 05-05-2008 @ 22:28:50     Reply | Top | Edit

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whats making these tests so hard is that my truck will not idle. i have to keep messing with the throttle in order to have it idle. or it dies right away.

i inspected all the lines and made a soapy water solution and sprayed all hoses and TBI gasket and intake gasket and cant find anything.

ill double check though.
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

[ Edited on 05/05/2008 @ 22:30:54 ]

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Posted By: 95ttoplt1   On: 05-05-2008 @ 22:32:20     Reply | Top | Edit

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Soap and water will do nothing. You need some thing that burns. That way when you find the leak, the engine ingests the combustible in the leak, into the cylinder and corrects the lean problem and start running better.

I'd check the plug wire routing.
--

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Posted By: brandon350 On: 05-07-2008 @ 21:30:13     Reply | Top | Edit

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If I were you and spent all that money and being that frustrated I would just take it to a reputable shop that has the proper equipment to test your truck. I spent hundreds of dollars replacing everything on my van, tested the fuel pressure thinking it was the pump since it wasnt starting. Fuel pressure was right were it was supposed to be, took it to a GM dealer, $65 later diagnosed as the fuel pump, I replaced it myself and to my amazement it started. Just irritating after sinking tons of money into a vehicle and getting no results. Take it somewhere to have them diagnose it then replace it yourself.

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Posted By: WickedS6   On: 05-07-2008 @ 21:57:20     Reply | Top | Edit

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Have you checked the timing? those, and the 4.3 are famous for the dist spinning and throwing timing off, may explain why it won't idle. Bite the bullet and buy a cheapo from Sears. you also need to unplug the gray? plug on the dist it's self when you do this. it may be a different color, for the 4.3 i'm 99.999987% sure it's the gray one, don't ask me why, i'm a big 4.3 fan and have owned quite a few over the years It's probably the same for the 5.7 GM only changed the ECU prom between the two motors.
--
Uuhhhh....

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Posted By: TigerZ On: 05-11-2008 @ 02:20:03     Reply | Top | Edit

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i checked the timing. and to be on the safe side i just pulled the distributor and swapped in a new one. same issue. i lined up the balancer with the notch on the crank. then looked at my rotor and it was right on the #1 cylinder mark.

also, my cold cylinder check was wrong. i reassembled everything then ran the engine again, this time twice as long. and the header was hot. i have a friend coming over on monday and we're gonna just re inspect everything. Hes an actual certified mechanic (airplanes, but pretty much the same shit). so if we cant figure this shit out, im taking it to a shop. ill post an update monday night.

i just know its going to be the stupidest thing....
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

[ Edited on 05/11/2008 @ 02:29:21 ]

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Posted By: ryanfx On: 05-11-2008 @ 14:51:10     Reply | Top | Edit

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no one's said it...

Check your blinker fluid
--

2001 Trans Am WS6 Black on Black...on Black
PaceSetter LT's, TSP catted Y,Borla catback, SLP lid
!CAGS, Eibach pro-kit, Bilstein shocks, 5% tint all around

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Posted By: TigerZ On: 05-12-2008 @ 19:17:10     Reply | Top | Edit

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so i swapped in the new distributor didnt make a difference. so right now im in the process of putting the old one back in.

but something happened recently that worries me
according to my gauge i am now not getting ANY oil pressure. if anything. the gauge rises a little when the car is shut off.

this is LAME.

oh and ryanfx,
that was the first thing i replaced
http://kalecoauto.com/index.php?main_page=product_info&products_id=6
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

[ Edited on 05/12/2008 @ 19:23:39 ]

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Posted By: TigerZ On: 05-16-2008 @ 20:02:31     Reply | Top | Edit

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just heard back from the shop

timing chain broke
$700


:'(
--
K&N, Edelbrock, T5 swap, MSD, Flowmaster, 3.73s 3600watt sound system wrapped in falkon ziexs mmm

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