PFS Purple ECU and A/C
#1
PFS Purple ECU and A/C
I have a PFS Purple ECU on a 94' FD. A/C worked PERFECTLY when i first bought the car, it wasnt until the MOMENT i installed the PFC that it f'd up my AC.
It has been like this for months...i just dont use the a/c much but now its hotter than godzilla **** and i want my a/c
this is the deal -
- turn a/c on, car's idle does not raise, idles for about 30 seconds then the idle starts boucing, bouncing, BOUNCING, BOUNCING!!, until its bouncing like 1k rpms up and down and then it stalls....
-if im driving in gear a/c works great..only the car can't idle with it on..
-now if i hold the gas down a little to keep the idle around 1200rpms no bouncing nothing!
I know for a fact if i unplug and run the stock ECU it will run fine...so any ideas?
It has been like this for months...i just dont use the a/c much but now its hotter than godzilla **** and i want my a/c
this is the deal -
- turn a/c on, car's idle does not raise, idles for about 30 seconds then the idle starts boucing, bouncing, BOUNCING, BOUNCING!!, until its bouncing like 1k rpms up and down and then it stalls....
-if im driving in gear a/c works great..only the car can't idle with it on..
-now if i hold the gas down a little to keep the idle around 1200rpms no bouncing nothing!
I know for a fact if i unplug and run the stock ECU it will run fine...so any ideas?
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#9
Constant threat
Does the idle improve with an electrical load? I know that on occasion, for no reason whatsoever, my idle will 'hunt' up and down a bit, but simply turning on the parking lights smooths it right out.
#10
FD title holder since 94
iTrader: (1)
Due to the mapping of the ecu, the parking lights make it idle a little higher and probably takes it out of the hunting rpm range it was in. Not 100% sure but I think it was 750, then 850 and then 950 for idle rpm based on what was on, nothing, electrical load, and A/C.
#11
hunts sometimes...mainly occurs when i try to adjust the idle up...anytime i move the idle screw ontop of the throttlebody to raise the idle, the car will raise it for about 2 seconds then bounce between the previous and the new setting until it stalls (same thing when a/c comes on) so therefore i cannot adjust my idle i have to move it back down
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mulcryant
2nd Generation Specific (1986-1992)
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09-09-15 05:24 PM