Mechanics

LOW IDEL WHEN COMING TO FULL STOP CAR

1987 Oldsmobile 98 • 127,000 miles

Low idel when coming to full stop car
Hello:
I have 1987 oldsmobile 98 regency brogham with 127,000 miles on it.I replaced the following.
1. New battery
2. A new Alternator
3. New battery cables.
4. New Spark Plugs
5. New idel air control
6. New icm Ignition Module
7. New ecm compter control module with a new eprom for gm vintage warehouse
8. The car now has no codes from the computer. AFTER IT WAS INSTALLLED
9. Rebuild tranmission

after a few hours driving, the idle is rough and wants to stail out,
the car has 3.8 L 213 CID V6 General Motors engine
is there any others sensors that could case this problem
how about egr value & tp sensor

I NEED HELP WITH THIS PROBLEM
ALSO THE GAS MILAGE IS very bad & gas smell from tail pipe after car is parked.
THANK YOU
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Blackoldsmobile 98
July 1, 2013.



Clean throttle plate on both sides with choke cleaner and iac hole. Check fuelpressure shold be 41-47 psi

Hmac300
Jul 2, 2013.