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Map Sensor Help

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Old Dec 4, 2007 | 11:48 AM
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1998Z20what?'s Avatar
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Default Map Sensor Help

how do you know if your map sensor is acting up? my stock idle is high, even in gear. I'm guessing it could be a vacuum leak, although I didnt find a loose hose, I am also leaning towards a faulty Idle Air Control...
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Old Dec 4, 2007 | 12:20 PM
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It could be a throttle position sensor...mine did the high idle and I replaced the TPS and it cured it. A scan with a Tech II will probably tell you what is going on with your engine.
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Old Dec 4, 2007 | 01:25 PM
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right on, thanks
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Old Dec 4, 2007 | 02:47 PM
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A bad MAP sensor (reading too high) will make the car run rich and terrible. High idle can be a host of different scenarios. As mentioned, get it scanned first.
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Old Dec 4, 2007 | 03:44 PM
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alright, ill go to advance and get it read..i hate going there they **** me off when they act like they are mechanics and dont know what they are talking about...thats why i asked on here first lol
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Old Dec 4, 2007 | 04:12 PM
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If it is a TPS it will only cost you about $30 or so if my memory serves me..might be a little more cause I work at a Chevy dealer and get parts on the cheep...it only takes about 2 minutes to change one out ...
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Old Dec 4, 2007 | 06:04 PM
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well i drive 30 mins home everyday from work. and when i turn the car off, and wait about ten minutes to turn it back on, it wont start, the engine wont even try to turn over? it was working fine before i did the spark plugs a few days ago? all the wires are on and the plugs are gapped correctly and not cracked? WTF
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Old Dec 4, 2007 | 07:38 PM
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and to top it off, the guy who tuned my computer is no where to be found, and he went awall and left me with a locked computer so i cant diagnos my damn car
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