Question about Pontiac Firebird

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I have a 1993 Pontiac firebird, that when I put in gear, or park it idles very high. what or how can get it back, to a normal idle speed?

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  • Pontiac Master
  • 635 Answers

Check your idle speed sensor, check for vacuum leaks.

Posted on Oct 14, 2013

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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Thunder55
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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

Molson02536
  • 3854 Answers

SOURCE: 1989 pontiac firebird 305 v8 starts and idles

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

traceylewis1
  • 363 Answers

SOURCE: I have a 1992 Ford

Most likely your (TPS) is out "Throutial Posision Scensor".

Posted on Nov 30, 2010

bluesman1956
  • 388 Answers

SOURCE: My car rpm idle is too high when in park its

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

  • 1 Answer

SOURCE: 1993 CHEVROLET S10 BLAZER-WHEN DRIVING

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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1 Answer

Having problems with my 1998 Pontiac firebird. When I sit with the air on my car sometimes start to shake or even smoke. I don't know if it's the exhausts or something dealing with it breathing. Whatever...


A bunch of things can cause this.
It could be the engine idle speed is too low, can be caused by a faulty Idle Air Control valve. Watch the rev counter when it does it and see if it's very low. See if it rises when you turn off the air con. The air con puts a load on the engine which should be adjusted for by the IAC valve (automatically opens the throttle very slightly to keep the engine speed from getting too low).
Also possible to be fuel pressure, Mass Air Flow sensor, ignition coil, spark plugs or even a blocked air filter.
Is the check engine light on?
Try looking at Pontiac firebird forums. Google search firebird idle faults. Good luck.
https://www.google.co.nz/search?q=1998+Pontiac+firebird+idle+adjust&ie=utf-8&oe=utf-8&client=firefox-b&gfe_rd=cr&ei=YbpsWavMPOrc8weH8qDYAw

https://www.google.co.nz/search?q=Pontiac+firebird+ide+problems&ie=utf-8&oe=utf-8&client=firefox-b&gfe_rd=cr&ei=z8dsWcXfBOHDXsLtjoAN

Jul 17, 2017 | Cars & Trucks

2 Answers

I have a 1993 Ford Explorer that goes into high idle when I put in gear. It does this when the engine is hot or cold.


On some cars there's a speed sensor on the clutch or transmission. That might cause an idle problem.

Mar 24, 2014 | 1993 Ford Explorer Limited

1 Answer

I have a 1994 pontiac firebird when it is in park it idles fine but when you but it in gear the idle drops. also when i take off the car just skips (struggling to go) i replace the spark plug, wires and...


Is the check engine light on ?
The idle speed problem could be the idle air control valve, and the rough running problem could be fuel pressure or dirty injectors.

Sep 05, 2013 | Pontiac Firebird Cars & Trucks

1 Answer

1993 ford f350 7.5 460 i have problems with the high idle in park sometimes other gears mostly park the funny thing is when cold it runs at 1,000 rpm and when hot it go's 1,250-1,450 i replace the


Check the engine intake and all vacuum hoses for leaks, do this with a can of spray carb cleaner, if you hit a leak the idle speed will change. Repair what you find.

Aug 09, 2012 | 1992 Ford F350

1 Answer

1993 park avenue idles high after warming up for a bit, the car has been sitting for a little more than a year and now that winter is almost over I started it for the first time in 4 months. Fired right up...


try redexe petrol additive.could be carbon buildup.when you take to the highway do not use heavy acceleration,but build up speed gradually..could also be sticky throttle cable.....

Feb 19, 2010 | 1993 Buick Park Avenue

1 Answer

1989 pontiac firebird 305 v8 starts and idles


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.

Aug 08, 2009 | 1997 Chevrolet Cavalier

1 Answer

It won't stay running when put into gear


check for engine vacuum leaks and clean the throttle body and idle speed control air bypass valve, also have the system tested for stored trouble codes, below is how to do that test manually. go to the link.
http://check-engine-light-codes.blogspot.com/2006/03/gm-1983-95-vehicles-obd1-codes-self.html

Aug 08, 2009 | 1989 Pontiac Firebird

1 Answer

Miss


check your timing.. it might be off a little bit, also you may want to check the idle screw adjustment just under the air filter assemly

Jul 06, 2009 | 1991 Pontiac Firebird

1 Answer

1993 pontiac 3.1


Check mass air flow sensor many times just cleaning the two wires that stretch across the inside with a Q tip and carb cleaner will restore in gear idle. If not, do code tests to see if any faults are recorded.

Jun 02, 2009 | 1993 Pontiac Grand Prix

1 Answer

1979 Firebird Esprit hard to start and keep running, dies in gear


it sounds like timing to me if it dies when you put it in gear.it can idle fine but when you put it in gear and it dies then you have timing problems

Jan 13, 2009 | 1979 Pontiac Firebird

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