Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
I am diesel mechanic by profession however I am having some problems with my " bat mobile" aka montero 1998 work van. I replaced the manual transmission, reconnect every thing and tried starting the vehicle.
After starting the vehicle I noticed the rpm will climb to 2500 at idle, there was no codes present in the initial stage however, when I unplugged the MAF sensor the rmp suddenly drops to 800 ish. I tested power, ground, 5v reference and signal at the maf plug. Base on the readings I received I went ahead a change the sensor, new sensor installed SAME PROBLEM. Additionally If I place my hand against the throttle body I will shut off
Additionally information
The following was observed with the use off my scan tool.
(1) IAT: 41 with the key on
(2) MAF : 0 g/s with the key on but increase will the engine is running
(3) o2 sensors: 0.8v ( sensor 1) 0.4v to 0.6v ( sensor 2) with the key on
(4) Tps: shows 3% with key on and while engine is running . It will increase when the throttle is depressed.
In addition, the iac valve is extremely hot when the key is turned on
I will be extremely grateful for your assistance and response
Topic Author
