North American Turbocoupe Organization



IF THE CAR RUNS RICH
COOKER Offline
Member
#1
If the car runs rich does that mean that it needs more air to compinsate for the fuel?? If it is running rich is there a way to control how much fuel goes in? Does the BCS have any thing to do with it running rich??
DAVE COOK
NEED MY TC BACK
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Walsted Offline
Posting Freak
#2
Quote:Originally posted by COOKER:
If the car runs rich does that mean that it needs more air to compinsate for the fuel??
Or less fuel.
Quote:If it is running rich is there a way to control how much fuel goes in?
The computer is supposed to control and compensate by determining the mixture via the oxygen sensor.
Quote: Does the BCS have any thing to do with it running rich??
I don't think so. First guess would be the VAM or TPS, but I'm not the expert. I solve the problems via the run-codes, repair, replace, post-on-this-board-if-I-am-confused, run-codes-again method.

Hope this helps.

------------------
Mike Walsted - NATO member
1986 5-speed TurboCoupe .
Mike Walsted - Sold my 1986 5-speed TurboCoupe
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Hawk Offline
Senior Member
#3
If you are sure the car is running rich, I would check 2 things. One would be the fuel pressure. Too high of pressure will make it run rich. The second most likely cause would be a failed oxygen sensor. The car will go into the default open loop state if the sensor goes bad. Another possiblility is the TPS, as Mike said. Get a code reader, or, read in the FAQ's on how to down load the codes. Once you get the error codes, troubleshooting becomes much easier.
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