2nd Generation Specific 1986-1992 Discussion

I found the Vac leak(YAY!) but now......

Old 10-21-2006, 05:19 PM
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Dev
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my car idles (and holds)at a pulsation 650-900rpms.

I did the LCD tps thing still not much difference.

The problem was a combo of bad hoses a cracked gasket but the major problem was at the primary injectors the O rings and Gromments where all in bad shape.



now whenever I take a hard turn or put in reverse my car chokes out or idles dangerously low .

this also happens when my I press down on the clutch and brakes while in a turn.



I know this sounds like a bad BAC valve but it is not! I have two and both are good.



also I think this car has it's own custom made power steering pump. The previous owner had one made for her. and I think thats why my car orginial idled at 1000-12 rpms



I'm going to follow up and check out secoundary injectors.



I not expection a complete and ominous solution from anyone here. just some clues or a point in the right direction. This car is driving me up the wall and I need some ideas.



86 GXL
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Old 10-22-2006, 12:23 PM
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i think you're on the right track, but you should look at the backup switch, i'm not sure but the ecu might get that signal too
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Old 10-25-2006, 04:02 PM
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Originally Posted by j9fd3s' post='842102' date='Oct 22 2006, 09:23 AM

i think you're on the right track, but you should look at the backup switch, i'm not sure but the ecu might get that signal too




backup switch?

I managed to take it to a shop and one of the guys told me he adjusted the BAC valve. also he said if the problem remained he said I may need a new IAC switch. (I have no idea what a IAC switch is)



it works alittle better now. the idle doesn't bouce as much but it still chokes out on hard turn but not as often.



I'm I running in circles here or what?
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Old 10-25-2006, 05:43 PM
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chokes on a hard turn?
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Old 10-25-2006, 06:03 PM
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Originally Posted by j9fd3s' post='842472' date='Oct 25 2006, 02:43 PM

chokes on a hard turn?




yup chokes ouf on a hard turn.

also If I place the car in gear and leave my foot on the clutch the RPMS decrease as well.
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Old 10-25-2006, 06:03 PM
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Originally Posted by Dev' post='842474' date='Oct 25 2006, 03:03 PM

yup chokes ouf on a hard turn.

also If I place the car in gear and leave my foot on the clutch the RPMS decrease as well.


oops thats OUT not ouf.
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Old 10-26-2006, 10:09 AM
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bad afm maybe? the afm door is affected by gravity....



could also be a clogged fuel pump filter/sock my 91 had stalagmites growing from the fuel pump assembly.....



or is that stalagtites?
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Old 10-26-2006, 10:14 AM
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I believe that would be stalactites. Carry on.
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Old 10-26-2006, 01:51 PM
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Originally Posted by Baldy' post='842556' date='Oct 26 2006, 08:14 AM

I believe that would be stalactites. Carry on.


excellent! thanks
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Old 10-26-2006, 05:36 PM
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Originally Posted by j9fd3s' post='842601' date='Oct 26 2006, 10:51 AM

excellent! thanks


Mechanics around here keep refering to a IAC (idle air control valve) which I belive is the BAC valve

I looked in my haynes manual and found nothing about it. I'm I wrong on this one?



I don't know what AFM means



ok I'll check out the fuel pump and swap out the O rings and grommets in the secondary injectors

thx again
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