Question about 1997 Pontiac Bonneville
Very carefully check for vacuum leaks, hoses can be cracked, loose or disconnected. What I do is unplug every single one of them and cut about 1/8" off, this will make the connection tighter and at the same time check for toasted hoses.
Replace fuel filter and spark plugs if you haven't done so and check Fuel Pump pressure, you can borrow a tester from AutoZone or similar Autoparts, no need to buy one.
Also, remove the two screws holding the IAC (Idle Air Control) Solenoid, located on the Throttle Body, use a rag wet with Fuel Injector cleaner and wipe it clean, it is going to be dirty, then wrap the rag on a pen or pencil and clean the solenoid's housing, particularly the far end, where the solenoid seats. ,make sure not to scratch the housing walls. DO NOT APPLY FUEL INJECTOR CLEANER DIRECTLY INTO THE SOLENOID OR THE HOUSING.
Compress the solenoid with a twisting motion before installation, do not use too much force. No need!!
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Posted on Sep 03, 2010
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Posted on Jan 02, 2017
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