Question about Cars & Trucks
I get an error on scan tool that says limited activity at map sensor. can i check this sensor or clean it some how
Yes you can with sensor safe cleaner. They sell it at auto parts stores. If it doesn't work after cleaning it do not buy the sensor at a parts store. Spend the extra money and get the correct sensor at the dealership. If you dont you may buy and replace it again when the $28.00 part from the parts store doesn't fix it. Spend $22.00 more the first time and fix it once .
Posted on Aug 10, 2017
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Posted on Jan 02, 2017
SOURCE: 99 4runner 5vz-fe 3.4 misfire
I know this post is old, but right on the engine theres a sticker that says use multi-ground plugs only. I read a similar problem like yours and it seemed to turn out that the spark was arcing to ground over the ceramic on the plug. So maybe it could have something to do with the single ground plugs.
Posted on Jan 23, 2009
I just had the same thing happen to my 99 RX300. I replaced the MAF sensor and cleaned the throttle body. We cleared the codes and check engine light came on again... with a knock sensor code. Had to replace knock sensors. Found some great info on how to do that here. http://us.lexusownersclub.com/forums/index.php?showtopic=41266&mode=threaded Car drives great now!
Posted on Jun 26, 2009
u need to check ur voltage at the wire and also for a ground. and if there are any vacuum hoses loose or out of place. are there any other codes in there
Posted on Dec 22, 2009
MAP SENSOR LOCATED BACK TOP INTAKE ON THROTTLE BODY NEXT TO IDLE AIR CONTROL VALVE.THE MAP SENSOR WILL HAVE A SMALL VACUUM LINE CONNECTED TO IT.
Posted on Jun 25, 2010
Tips for a great answer:
Sep 24, 2015 | 1995 Jeep Grand Cherokee
The powertrain control module (PCM)
The instrument panel cluster
The sensing diagnostic module (SDM)
The electronic brake control module (EBCM)
The serial data line class 2 (circuit 1807) allows the scan tool to access directly the PCM in order to read emissions-related information. The scan tool gains access to both data lines through the data link connector (DLC). You may then monitor or control system operations for diagnostic purposes.
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