Need some serious help!!!
05-12-2004, 12:41 AM
#1
Thread Starter
Join Date: May 2004
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Posts: 32
Need some serious help!!!
I have a 92 GT 5.0 5 speed, when it warms up or about 10 miles which ever comes first, the engine starts bucking and jerking really bad. Sometimes it will stall when idling. Seems to act worse when I press down on the gas. I have changed the fuel pump, fuel filter, map sensor, tfi module, plugs/wires, ignition coil and the coolant temp. sensor... Running out of ideas! And I don't want to get robbed at a shop! I know that it has to be something small... Any help or advise from here would be great.
05-12-2004, 01:18 AM
#2
3rd Gear Member
Join Date: Apr 2004
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Posts: 739
RE: Need some serious help!!!
NEVERMIND! I read somethig else, i dunno... I was going to say the plugs, but then i just now saw that, i skim sometimes, sorry! Ok what about the umm crank position sensor? or is it called the cam position sensor, jeez this stuff gets complicated but maybe that will spark some help.
05-12-2004, 01:23 AM
#3
3rd Gear Member
Join Date: Mar 2004
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Posts: 709
RE: Need some serious help!!!
ORIGINAL: mbliss
I have a 92 GT 5.0 5 speed, when it warms up or about 10 miles which ever comes first, the engine starts bucking and jerking really bad. Sometimes it will stall when idling. Seems to act worse when I press down on the gas. I have changed the fuel pump, fuel filter, map sensor, tfi module, plugs/wires, ignition coil and the coolant temp. sensor... Running out of ideas! And I don't want to get robbed at a shop! I know that it has to be something small... Any help or advise from here would be great.
I have a 92 GT 5.0 5 speed, when it warms up or about 10 miles which ever comes first, the engine starts bucking and jerking really bad. Sometimes it will stall when idling. Seems to act worse when I press down on the gas. I have changed the fuel pump, fuel filter, map sensor, tfi module, plugs/wires, ignition coil and the coolant temp. sensor... Running out of ideas! And I don't want to get robbed at a shop! I know that it has to be something small... Any help or advise from here would be great.
05-12-2004, 01:52 PM
#5
2nd Gear Member
Join Date: Feb 2004
Location: United States
Posts: 431
RE: Need some serious help!!!
Ever smell gas? You said it does it after it warms up, which tells me it culd be a couple of things. One is your fuel/air mixture, controlled by your MAF. Disconnect the MAF and see if it goes away. The other thing could be a leaking head gasket. I had a Chevette one time that the head gasket only leaked after it got warm. Go figure.
Just remember it is associated with temperature of the engine...there only so many things it could be.
Just remember it is associated with temperature of the engine...there only so many things it could be.
05-12-2004, 07:03 PM
#7
1st Gear Member
Join Date: Apr 2004
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Posts: 63
RE: Need some serious help!!!
I had a very similar problem with my 86gt. I tried everything. It turned out to be the pickup coil in the distributor. I will warn you. It is easier just to buy a new distributor than to replace the pickup coil. Hope this helps. Good luck
05-12-2004, 09:35 PM
#8
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Join Date: Feb 2004
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Posts: 1,494
RE: Need some serious help!!!
There's three wires coming out of the TPS, probe the green one with the positive lead and ground the negative on a multimeter. With the throttle closed it should read around .97-.99 volts. Probably not the problem but worth a try. To adjust it you just need to loosen the screws and pivot the sensor, I have to make the hole for the left/rear screw longer with my dremel to get it to read that high.
05-13-2004, 03:46 PM
#9
5th Gear Member
Join Date: Mar 2004
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Posts: 4,813
RE: Need some serious help!!!
after changing all those parts, you really need to take it to a shop and have them run a diagnostic test on it to see what really is the matter with it before you spend a fortune on parts that aren't bad. just changing parts ***** nilly without any idea what is wrong is costing you a lot more than a diagnostic test would have cost you in the first place. once they tell you what's wrong, then you can get the parts and fix it yourself in a lot of cases.
05-14-2004, 05:12 AM
#10
Thread Starter
Join Date: May 2004
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Posts: 32
RE: Need some serious help!!!
I agree completely, only problem is that I'm in Hawaii! No where else to take it but a couple of local shops that will rob the hell out of me!!! I ran the codes with my self diagnostic reader and it's 1-1, 1-1-1 system pass....