code 34 help
Thread Starter
Supreme Member
Joined: Jul 2003
Posts: 2,494
Likes: 0
From: Markham
Car: 1990 Camaro
Engine: 355ci
Transmission: TKO-600 5 speed
Axle/Gears: 3.73 10 bolt
code 34 help
this car is a sd car and has a map sensor its a 90
code 34- 34. Low voltage (high vacuum) at mass air flow sensor (or MAP sensor)
does that just mean the sensor is toast? or is something else wrong? My car is running nuts then switching into limp home mode so if i can just replace the sensor that would be great.
code 34- 34. Low voltage (high vacuum) at mass air flow sensor (or MAP sensor)
does that just mean the sensor is toast? or is something else wrong? My car is running nuts then switching into limp home mode so if i can just replace the sensor that would be great.
Moderator
Joined: Jan 2000
Posts: 19,664
Likes: 313
Get out your meter and a vacuum source or gauge. Your MAP should yield voltage results at a given vacuum similar to the table:
If your results aren't similar, the MAP may be damaged or failing. Make sure the TPS is working correctly, since the ECM gets much of its comparative data for a MAP reading via the TPS signal at any given RPM. If the TPS is off, the expected MAP voltage at a given RPM will be skewed by the TPS error.
If your results aren't similar, the MAP may be damaged or failing. Make sure the TPS is working correctly, since the ECM gets much of its comparative data for a MAP reading via the TPS signal at any given RPM. If the TPS is off, the expected MAP voltage at a given RPM will be skewed by the TPS error.
Thread
Thread Starter
Forum
Replies
Last Post