De accelerating problems

Tiny
BRYCE
  • MEMBER
  • FORD MUSTANG
The car is a 1988 mustang gt, aod, speed density. The problem I am having when the car is cold while de-accelerating the car will give quick rpm burst switching from gears most prominent from 2nd to first and will buck the car forward it also does it while warm as well but not as bad only after driving for 1/2 hour also after driving for 1/2 hour it will show 2 different idles in drive and in park have a feeling the two problems are related. I have replaced plugs wires cap and rotor, tps sensor, ect sensor, egr valve, iac motor, cleaned throttle body tranny flush and filter. Fuel pressure and vacuum pressure checked out ok scanned computer code 32 came up only when the car is on and not running. Did not come up with it running any help would be appreciated.
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Sunday, January 7th, 2007 AT 10:36 AM

3 Replies

Tiny
TAURUSWHEEL
  • MEMBER
Code 32 is some type of issue related to evp sensor, and or, operation of the egr valve. Let me ask you, when you gat the code, which part of the test does it show up in, the very first set of codes, or the second set? This is while the car is on, but not running, known as koeo, key on, engine off. There are two parts of this test, if it's in the first, it's a current malfunction, if it shows up in the second part, it's something that has recently happened, at least within the last 40 warmup cycles. If it's still occasionally happening it will continue to show in the second part, known as continous codes, are you doing this test yourself? Or an autoparts store? If you're going to keep this car, I recommend that you buy yourself a scanner, probably around 30 bucks or so, and learn how to use it, you need to erase this code if it's continous, and see if it reappears. Try cleaning the connectors for the evp sensor, if you have one, I believe there may have been a couple of diffrent systems used, evp sensor sits right on top of the egr valve. Don't replace parts needlessly spending money if you don't know the parts are definitely bad. Sometimes if you're lucky, on older vehicles, it's corrosion on connectors that can cause errors in operation
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Sunday, January 7th, 2007 AT 11:01 AM
Tiny
BRYCE
  • MEMBER
It shows up in the first part of the test
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Sunday, January 7th, 2007 AT 11:35 AM
Tiny
BRYCE
  • MEMBER
I did the test myself also took it to ford and they said it has no consequence
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Sunday, January 7th, 2007 AT 11:37 AM

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