Question about Pontiac Firebird
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Posted on Jan 02, 2017
SOURCE: high idle when in drive
Sounds like a faulty TPS sensor, also could be the ECM playing games with you,,,try disconnecting the battery for about 20 mins,,then reconnect,,it may clear it up.
Posted on Jan 17, 2009
Your idle air control valve may be dirty or the wire harness may be damaged. First try cleaning the throttle body with throttle body cleaner and make sure you use all the can up and try to get the idle air control valve cleaned. A faulty or dirty idle air control valve will cause engine to stall when put in to gear from idle. Good luck and hope this helps. Keep me posted, be glad to help you get your car running 100% soon.
Posted on Aug 08, 2009
Take it to an auto parts chain store where they will run a diagnostic scan for free and tell you what sensors may be causing this. It sounds like a throttle position sensor or possibly and idle air control valve. It could also be caused by a vacuum leak causing the computer to over compensate with more fuel causing the high idle.
Posted on Feb 25, 2011
My 93 s10 blazer idles really ruff and i
erratically for the first few minutes until it warms up. It now sound like its going to stall every morning I start it up and black soot comes out the tail pipe onto the pavement but only while its idling rough. After i changed the cap and rotor it idled good for a couple days then started doing it again.Already changed the fuel filter and pcv valve. whats the problem?
Posted on Mar 13, 2011
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