so many sensors need replaced!
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From: o`fallon, missouri
Car: 1987 pontiac trans am gta
Engine: 350
Transmission: 5 speed
Axle/Gears: 3.43 posi
so many sensors need replaced!
i ran the check engine light test and i got 7 codes this is going to cost so much money! 22, throttle position sensor circuit 24, vehicle speed sensor circuit 32, baro/map sensor 33, mass air flow sensor 34,mass air flow sensor 44, lean exhaust 54, fuel pump circuit
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From: Beaufort South Carolina
Car: 1983 Camaro Z/28
Engine: LU5 305 CFI
Transmission: 700R4
Axle/Gears: J65/G80/G92-3.23
Re: so many sensors need replaced!
You could have a root cause for all those problems.The TPS could be out of adjustment causing an idle problem in turn causing a vacuum problem.Or you could have a dirty O2 or MAF sensor causing a rich or lean condition.In any case get a Haynes or Chilton(or factory book if you can)service manual and go through the trouble shooting before you start replacing parts.Those codes are a starting point not just indicating to replace a faulty sensor.
Just a similar side not my '95 Jimmy had a trouble code set for the IAC.Turned out it was just carbon build up on the pintle.i cleaned it,cleared the code and solved the problem.
Another thing is start with the basics.How long has it been since a full tune-up was done(plugs,wires,cap/rotor,pcv valve)and the oil changed.Check all the vacuum lines for cracks/leaks(vac line is cheap enough to replace if unsure how old).
Just a similar side not my '95 Jimmy had a trouble code set for the IAC.Turned out it was just carbon build up on the pintle.i cleaned it,cleared the code and solved the problem.
Another thing is start with the basics.How long has it been since a full tune-up was done(plugs,wires,cap/rotor,pcv valve)and the oil changed.Check all the vacuum lines for cracks/leaks(vac line is cheap enough to replace if unsure how old).
Last edited by coolram62; Jul 28, 2007 at 01:00 PM. Reason: spelling
Joined: Aug 1999
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From: RI
Car: 1984 Camaro Berlinetta
Engine: LT1
Transmission: T56 6-speed
Axle/Gears: 4.11 LS1 Rear End
Re: so many sensors need replaced!
Disconnect the power from the battery to the ECM. Reconnect & then drive the car around for the day ( get it warm, let it cool, warm it up again and so on......) and re-check.
Like the other member said - don't just start thowing $$ at sensors. Get some "Added Value" for your $$ spraying the Throttle body with Intake cleaner, then change the oil & replace the Spark Plugs. ( Plugs will be fouled from all the crap the cleaner flooded the combustion chamgers with )
In a couple hours and for about $40 this is a good place to start on the "check engine" light when you have som many codes showing !! After that fill the tank with Super and a bottle of fuel system cleaner. Once the tank is near empty re-check the codes again and start working on the codes according to the repair books.
Good Luck !
Like the other member said - don't just start thowing $$ at sensors. Get some "Added Value" for your $$ spraying the Throttle body with Intake cleaner, then change the oil & replace the Spark Plugs. ( Plugs will be fouled from all the crap the cleaner flooded the combustion chamgers with )
In a couple hours and for about $40 this is a good place to start on the "check engine" light when you have som many codes showing !! After that fill the tank with Super and a bottle of fuel system cleaner. Once the tank is near empty re-check the codes again and start working on the codes according to the repair books.
Good Luck !
Joined: Nov 2003
Posts: 310
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From: Colorado
Car: 1991 TransAm GTA 350
Engine: 350 SBC TPI
Transmission: 700R4
Re: so many sensors need replaced!
I encourage you to check the ecm and sensor ground wires. I can't imagine all those sensors are bad unless maybe you hooked the battery up backwards with the key on.
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From: Somewhere around the South Side of Chicago just crusin' in one of the Niteriders
Car: 92RS 25th Anniv./88 IROC Z28 Vert
Engine: 305 TBI w/Tpi Air / 305 TPI
Transmission: 700r4/700r4
Axle/Gears: Posi
Re: so many sensors need replaced!
I can't even imagine the car running with all of those codes going wrong. I do agree, sounds like you need a major tune up.
Thread Starter
Junior Member
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Joined: Jul 2007
Posts: 88
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From: o`fallon, missouri
Car: 1987 pontiac trans am gta
Engine: 350
Transmission: 5 speed
Axle/Gears: 3.43 posi
Re: so many sensors need replaced!
the car didn't run yesterday so the i unhooked the batt. hooked it back up now it runs again. i haven't had the Chance to get it hot yet or check the codes.ill go and check ground wires today.one problem is like so many other old sports cars they have had so many owners, and so much neglect. and mine is the poster child for that.im sure it could use a good tune up.
Last edited by blue_iroc_z28; Jul 30, 2007 at 08:04 AM.
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