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#1 |
Registered User
Join Date: Aug 2003
Location: Las Vegas
Posts: 4
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Hi, I have an 87 gmc 1/2 ton 2wd P/U. Recently I have been have some bad drivability issues. A week ago the truck has developed an erratic problem. Now this doesnt happen all the time but it is getting more frequent. I can be driving along just fine and when I give it alittle more gas it will start cutting out. And I mean cutting out. It will spit and sputter and barely run. Its like it loses all powere. It will eventually stall. It always restarts but has no power, it idles really erratic and has no accelleration. After about 3 startups it will start up and run fine, usually for about 10 minutes then, the whole thing starts again. Now this doesnt happen all the time so I am confused.
I have replaced the inline fuel filter and that didnt help. I have no idea how to check the fuel pressure so dont know if it is the pump. I am getting no SES light and it didnt jump timing. Does anyone have any ideas what this could be. This is my work truck and I need to get it working dependable again. |
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#2 |
Robert Olson Transport
![]() Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,287
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are you sure your ignition system isnt crapping that sounds like a pickup coil or a brain to me
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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#3 |
STILL PLAYS WITH TRUX
Join Date: Nov 2002
Location: Melbourne, Fla.
Posts: 2,764
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Welcome to the board.
It's hard to test fuel press. on this system cuz of where the fuel lines are located and the fittings are special and dont allow room to tee into it. But it could be your fuel pump going south. The ignition module could be going bad too id replace it first and see what happens. |
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#4 |
Registered User
Join Date: Aug 2003
Location: Las Vegas
Posts: 4
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hi, well, Im getting no ses light. The truck crapped out on me today going to work. I just went by it and tried to start it 8 hours later. It started but only for a few minutes, unfortunately I was alone but I dont think Im getting spark from the coil to the dist. what do you think
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#5 |
STILL PLAYS WITH TRUX
Join Date: Nov 2002
Location: Melbourne, Fla.
Posts: 2,764
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No i dont think it's ing. related cuz if it was it would illuminate the ses .
Can you hear your fuel pump run when you turn the ing. key from off to just befor the starter is enguaged? |
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#6 |
You get what you pay for
![]() Join Date: Dec 1999
Location: Cherryville, NC
Posts: 4,798
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I'm no TBI specialist, but it sounds fuel related to me. You say when you give it more gas, it starts cutting out. I would suspect the fuel filter. I had a 87 1 ton van I drove for work once and it just quit. It was the fuel pump. Never gave any signs at all, just quit.
I guess it's possible the fuel pump is going bad. I would change the filter first. Probably needs changing anyway.
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Mike 1985 Chevy C-10 |
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#7 |
Genuine Chevrolet
Join Date: Feb 2003
Location: South West Pennsylvania.
Posts: 582
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Wouldn't a plugged catalytic convertor show the same symptoms?
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George 82 Silverado LWB 4x4 350 SM465 NP208 77 Chevrolet Blazer Chalet 400 TH350 NP203 |
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#8 |
Registered User
Join Date: Aug 2003
Location: Las Vegas
Posts: 4
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It was the coil... Tahnks for all your replies didnt expect to many. I also belong to www.IROC-ZPOST.com and now its good to know where I can get advice for this truck also
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