wild reading
Supreme Member
Joined: Dec 2000
Posts: 2,375
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From: Tucson, AZ, USA
Car: '99 Trans Am, '86 Camaro
Engine: LS1, Scrap
Transmission: T56, T5
Axle/Gears: 3.42 Stock ZT, 3.42 Open
check your multimeter... I find it difficult to believe a 5v reference line is generating an 8v signal
Supreme Member
Joined: Dec 2000
Posts: 2,375
Likes: 0
From: Tucson, AZ, USA
Car: '99 Trans Am, '86 Camaro
Engine: LS1, Scrap
Transmission: T56, T5
Axle/Gears: 3.42 Stock ZT, 3.42 Open
Kinda depends on what settings are available. On most digital multimeters, you would have it set to 20v DC. Analog, could be 10v DC. The idea, though, is to set it to the setting that's the closest higher setting to what you intend to read.. i.e. if you have a 10v, 20v, and 50v setting, and you want to read a 12v battery, set it to 20v.
For a quick diagnosis to ensure the multimeter isn't defective on this note, go ahead and get the voltage of your battery after the car's been sitting for 30 minutes (no doors open, no lights on, radar detector off, etc), and then check it with the car idling, and post the results.
The only reason I question the multimeter here is again, the signal line the TPS works off of is a 5V line. If it's actually getting 8v or more, something is very very wrong (short or impending ECU doom)
For a quick diagnosis to ensure the multimeter isn't defective on this note, go ahead and get the voltage of your battery after the car's been sitting for 30 minutes (no doors open, no lights on, radar detector off, etc), and then check it with the car idling, and post the results.
The only reason I question the multimeter here is again, the signal line the TPS works off of is a 5V line. If it's actually getting 8v or more, something is very very wrong (short or impending ECU doom)
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Joined: Jan 2004
Posts: 44
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Car: 86 fb
Engine: 2800
Transmission: 700r4
uh... ok ill tell you right now, i have it set to 200v setting..... cuz thats the only one that was getting an idle reading that was at .4
(the smallest settting) but i won't have a chance to fool with it again till friday or saterday
thanks for the input.....i hope that there is not ecm impending doom tho... ive got enough problems with that car....
(the smallest settting) but i won't have a chance to fool with it again till friday or saterday
thanks for the input.....i hope that there is not ecm impending doom tho... ive got enough problems with that car....
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