Acceleration Hesistation

Thirdeye · 11-01-2008, 04:13 PM

Hi everyone,

I have a 1989 c/k1500 4x4 truck, 4.3 L, 5 speed. The truck really seems to be stumbling bad while accelerating. IF you feather the throttle though, it doesn't seem to do it. It just started doing this today and the last time I was driving it the SES light came on. I had something similar happen to me earlier and it turned out that the rotor contact was carboned up bad. I had an dist cap and rotor kicking around, so i cleaned it up and put them on and it worked fine. It's dark out now, so I'm going to check that possibility out tomorrow in the daylight. Is there anything else that you think it could be? I'd like to retrieve the code it's giving me. Can I jump the computer data link using some hairpins or paper clips or something so it will flash me the code?

leolkfrm · 11-01-2008, 04:24 PM

go to auto zone for a freebe.. if it does not help a good scan would help

Thirdeye · 11-01-2008, 04:26 PM

no autozone up in these parts

Kennyray · 11-01-2008, 04:26 PM

While its dark out you might want take a spray bottle and mist your spark plug wires. If you see a light show that could be your problem.

leolkfrm · 11-01-2008, 04:29 PM

well i don't know where these parts are

so see if someone will scan it for a reasonable price

Thirdeye · 11-01-2008, 04:32 PM

I have a good set of wires that I'm going to put on anyways tomorrow.

rdhack · 11-01-2008, 09:25 PM

I had that problem on my S-10 and rotor, distributor cured it.

Case 7230 · 11-02-2008, 05:44 AM

Your truck is OBD1 so you should be able to pull codes with the paperclip no problem. Do a search of this forum for instructions. You can also go to www.troublecodes.net for what the codes mean. Good luck.

Thirdeye · 11-02-2008, 07:46 AM

i just have to put the clips in and the turn the ignition to on do i not?

76silverado · 11-02-2008, 08:18 AM

Quote:

Originally Posted by gjm

In my Haynes manual it states, to read the OBD-1 codes without the scan tool / OBD-1 reader, use a short jumper wire and jump the two terminals. A=ground and B= diagnostic test terminal. On my 1994 GMC the data link is located under the steering wheel, under the dash. The ground is the top right and the diagnostic second from right. After jumping the two, turn key to on, DO NOT START. The service engine soon light will flash. Trouble code 12 will flash three times. One flash, pause, two flashes. This happens three times, then if there are any other codes, it will flash them. On my truck it flashed five times, pause, four times. The code was 54. It did this three times. Then back to 12, then 54 again. I read the code in the manual. It said, fuel pump relay low voltage, check the fuel pump relay and circuit for shorts or damage. Of course I changed the relay and it didn't fix my problem. Is this wildly known? This is the first I have heard of this. Any experiences or comments of how to use this to get the maximum info??

Thats how ya do it.

11-01-2008, 04:13 PM	#1
Thirdeye Full Member Join Date: Jul 2008 Posts: 45	Acceleration Hesistation Hi everyone, I have a 1989 c/k1500 4x4 truck, 4.3 L, 5 speed. The truck really seems to be stumbling bad while accelerating. IF you feather the throttle though, it doesn't seem to do it. It just started doing this today and the last time I was driving it the SES light came on. I had something similar happen to me earlier and it turned out that the rotor contact was carboned up bad. I had an dist cap and rotor kicking around, so i cleaned it up and put them on and it worked fine. It's dark out now, so I'm going to check that possibility out tomorrow in the daylight. Is there anything else that you think it could be? I'd like to retrieve the code it's giving me. Can I jump the computer data link using some hairpins or paper clips or something so it will flash me the code?

11-01-2008, 04:24 PM	#2
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 1,456	go to auto zone for a freebe.. if it does not help a good scan would help __________________ 4 wheels move the body 2 wheels move the soul

11-01-2008, 04:29 PM	#5
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 1,456	well i don't know where these parts are so see if someone will scan it for a reasonable price __________________ 4 wheels move the body 2 wheels move the soul

11-01-2008, 09:25 PM	#7
rdhack Senior Member Join Date: Jun 2008 Location: kentucky Posts: 119	I had that problem on my S-10 and rotor, distributor cured it. __________________ MY first truck was a FORD.......I've owned Chevy's ever since. 1995 K2500 4x4 5.7L Cheyenne 1991 T-10 Blazer 4.3L Tahoe Package 1998 Oldsmobile Bravada 4.3L Vortec Smart Drive

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11-01-2008, 04:26 PM	#3
Thirdeye Full Member Join Date: Jul 2008 Posts: 45	no autozone up in these parts

11-01-2008, 04:26 PM	#4
Kennyray Senior Member Join Date: Oct 2005 Location: Birmingham, AL Posts: 178	While its dark out you might want take a spray bottle and mist your spark plug wires. If you see a light show that could be your problem.

11-01-2008, 04:32 PM	#6
Thirdeye Full Member Join Date: Jul 2008 Posts: 45	I have a good set of wires that I'm going to put on anyways tomorrow.

11-02-2008, 05:44 AM	#8
Case 7230 Senior Member Join Date: Dec 2007 Posts: 253	Your truck is OBD1 so you should be able to pull codes with the paperclip no problem. Do a search of this forum for instructions. You can also go to www.troublecodes.net for what the codes mean. Good luck.

11-02-2008, 07:46 AM	#9
Thirdeye Full Member Join Date: Jul 2008 Posts: 45	i just have to put the clips in and the turn the ignition to on do i not?

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