Skip to main content ↑ ↓
Topic: idle (Read 1233 times) previous topic - next topic

idle

hi i just got my 88 t-bird back i sold is 3yrs ago and rebought it last week, but now it idles funny have to tap accelerator pedal to keep it idleing some times. Does any one know what might cause this? im going to start tuning it up here in a week ir so and get it back running great

idle

Reply #1 –
check you IAC and TPS
1985 TC (yet another one) Fully loaded
has 225k mile  still with the factory head gasket






84  Turbo ranger  Daily driver  ($800.00 Ebay deal)
          volvo FMIC and more getto rigging than the law should allow

idle

Reply #2 –
I have a similar problem on my 1988 5.0 car. I've checked the IAC and TPS, replaced the TPS. Mine will start to stumble when sitting at a red light and then die. I'll be watching this closely, lol.

idle

Reply #3 –
I had this problem for a while.  If I revved up high and let it drop, it would stumble and die.  Turned out to be a bad ground for the TPS circuit.  Found it by trying to do the 1.0 v calibration thing.  I would only get 5v all through the TPS range.  Patched in a new ground and poof, Idles like a champ.

Fuel mileage got alot better too.
My car is a gravity hybrid.  The gasoline engine gets me up the hills, and gravity gets me down.

idle

Reply #4 –
ok thx will check the ground and those things

idle

Reply #5 –
Where  is the ground wire for the TPS? Is it the same place on all engines?

idle

Reply #6 –
if its not those, do a compression test. sounds like you might have a cracked head gasket. i had the same with my 93 cat. after idling for a few seconds it would start to stumble. but if i gave it just a little gas, it would be fine. does it act different if you unplug the IAC?
Remember, if the women dont find you handsome, they should at least find you handy.

When all else fails, get a bigger hammer.

Chris
 93 cat rebuilt 3.8

idle

Reply #7 –
did you ever solve the problem?

idle

Reply #8 –
I disconnected my IAC and it fixed the problem. It would idle at like two grand with the IAC plugged in. I dont even know why it is there. Car idles fine after I unplugged it
2013 Focus (Daily)
1968 Cougar XR7
1987 Turbo Coupe
5 Speed, Stock IHI, Aeromotive 340LPH, Stinger 3in DP w/Magnaflow 3in Race Series ler, Hallman Boost Controller, Corbeau Fixed Back Racing Seats, Rebuilt 35# Injectors, Kirban AFPR, Stinger's Front Mount Piping w/Big NPR Front Mount IC, 3/8 E-85 Fuel Lines, SPEC Stage 3+ Clutch, Explorer 4.0 Dual Core Radiator, Optima Red Top Battery
1988 Turbo Coupe (RIP)
1984 Cougar (RIP) :cougarsmily:
1986 Cougar XR7 5 Speed.  (sold)

idle

Reply #9 –
With the Iac unplugged, the computer cannot control the idle. (I)dle (A)ir (C)ontroler.
Quote from: jcassity
I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
Hooligans! 
1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
1986 cougar.
lilsammywasapunkrocker@yahoo.com
 

idle

Reply #10 –
Did you ever figure out your problem?