#1 |
Ok, so with the onset of colder weather the car decided to act up again.. it does the following:
90% of the time it will fire in the morning, then stall out immediately. it will run with throttle, but low throttle sounds like its running on maybe 2 cylinders, and it needs several near-WOT revs to idle on its own (and usually it only starts idling low.. 600-700 rpms). Note: exhaust smells close to fuel mist..or very rare-cooked fuel mist.
The other 10%, it starts and runs normally.
When driving, it sometimes just instantly goes rich (as I can smell it heavily, and I can see the dark cloud I leave on boost). 5% throttle usually makes it jump around erratically, but 10% and up runs normally (TPS issue??). Also, when it goes into its fit of fuel, it will usually stall off throttle, but then start up again right after.
So far my only conclusion is either a tricky TPS (sometimes acting up and sending WOT voltages randomly when the throttle isn't wide open, hence lots of fuel) or a MAP sensor that isn't working right. Also note.. this only happens at one specific throttle position, or at idle.. it isn't RPM-dependent
Could the idle issue have anything to do with the IAC, too? I could probably straighten this out but with the new job I have and 3 motor swaps that have been in progress lately, the T-bird took a back seat as long as it still runs (which it does.. just sometimes eats fuel as per the above situations)
The only thing I replaced lately was the TFI module ($100 for a Standard unit) and it ran great after.
All input is welcome before I have to get under the hood! Thanks.
90% of the time it will fire in the morning, then stall out immediately. it will run with throttle, but low throttle sounds like its running on maybe 2 cylinders, and it needs several near-WOT revs to idle on its own (and usually it only starts idling low.. 600-700 rpms). Note: exhaust smells close to fuel mist..or very rare-cooked fuel mist.
The other 10%, it starts and runs normally.
When driving, it sometimes just instantly goes rich (as I can smell it heavily, and I can see the dark cloud I leave on boost). 5% throttle usually makes it jump around erratically, but 10% and up runs normally (TPS issue??). Also, when it goes into its fit of fuel, it will usually stall off throttle, but then start up again right after.
So far my only conclusion is either a tricky TPS (sometimes acting up and sending WOT voltages randomly when the throttle isn't wide open, hence lots of fuel) or a MAP sensor that isn't working right. Also note.. this only happens at one specific throttle position, or at idle.. it isn't RPM-dependent
Could the idle issue have anything to do with the IAC, too? I could probably straighten this out but with the new job I have and 3 motor swaps that have been in progress lately, the T-bird took a back seat as long as it still runs (which it does.. just sometimes eats fuel as per the above situations)
The only thing I replaced lately was the TFI module ($100 for a Standard unit) and it ran great after.
All input is welcome before I have to get under the hood! Thanks.
1986 Ford Thunderbird Turbo coupe
all stock, hacksaw muffler delete, 124k miles.
1985 Ford Thunderbird Elan 5.0, 172k miles, shift kit, true duals, stock otherwise. **SOLD**
all stock, hacksaw muffler delete, 124k miles.
1985 Ford Thunderbird Elan 5.0, 172k miles, shift kit, true duals, stock otherwise. **SOLD**