why am I getting a MAP reference with my MAF TPI system?
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Joined: Feb 2001
Posts: 938
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From: Hinesville, GA USA
Car: '86 IROC-Z/'94 Z28
Engine: 350 LT1/382 LT1
Transmission: 4L60-E/T-56
Axle/Gears: 3.45/3.42 (soon 4.10)
why am I getting a MAP reference with my MAF TPI system?
I've been troubleshooting bugs with my 88 GTA. I want to get it tuned and running well (mechanically) and finish the break in before I swap to the 0411 which is ready to go. I still have a slight detonation problem under load, sometimes more than others; I've corrected the problem alot but not yet completely fixed it. When I run my scan tool on it, it gives me a MAP sensor reference, which varies between 2.7 and 2.9 volts, regardless of RPM or load. This is a 1988 car with CSI delete. Curious why this is and if this is anything I need to be concerned about?
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Joined: Nov 2010
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From: kansas city
Car: 87 GTA
Engine: Two cracked out gerbils
Transmission: 700r with a probuilt automatics kit
Axle/Gears: 3.27
Re: why am I getting a MAP reference with my MAF TPI system?
I see this post is a little old but just wanted to try and help.
I have an 87 gta and mine has the same reading,I believe that that setting is a reference for the ecm that maybe calculated off of the tps % when MAF isn't working or car is in limp mode? Not 100% sure of when the ecm would use it.
I have an 87 gta and mine has the same reading,I believe that that setting is a reference for the ecm that maybe calculated off of the tps % when MAF isn't working or car is in limp mode? Not 100% sure of when the ecm would use it.
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