Questions & Answers for: Chevrolet how to change map light

...change MAP sensor signal. Normal EGR flow should cause slight decrease in manifold vacuum which would change MAP sensor signal. 43The ECM did not detect a knock signal during near wide open throttle ...

...map and still same what am i missing is the check engine light on and if so what are the codes on that model check to see if the map is getting vacuum if it is not getting vacuum the map sensor port ...

...of what you listed. It only relates to pressures and sensors. Retorque your throttle body, check resistance on your sensors and if that doesn't work change the map sensor. They're bad on these ...

...change it and/or the map sensor. I am thinking....an air leak at the hose (a crack in the plastic tube )to the MAP because you are also getting a 34 code ....knock sensor....and it may be affected by ...

...light comes on. Have changed MAP sensor, have check idle control valve, throttle position sensor, coolant temp sensor. don,t know whatelse to try? Any help will be appriceated. It might have jumped ...

...change Changed oil, oil filter and air filter. Ran fine for 10-15 minutes, then engine stalled and check engine light came on. Started back up then vehicle would buck occasionally and stall upon ...

map sensor located on 2003 chevrolet silverado 1500 engine light on changed maf sensor engine pings under heavy throttle and engine light blinks not sure what to do next you got engine knock check the

...Light still comes on and same code. Says replace map sensor and front o2 sensors. Any help with this problem would be appreciated very much!!! It is getting expensive trying to find problem. besides ...

...MAP reading doesn't change perform the following: With the Key on, engine off, disconnect the vacuum hose from the MAP sensor. Using a vacuum pump, pull 20 in. of vacuum on the MAP sensor. Does the ...

...MAP change during the EGR flow test an engine that is running poorly due to mechanical condition such as worn piston rings, ect. can cause low engine vacuum thus EGR flow test will fail excessif ...