Signs of a bad MAP sensor.
#1
Signs of a bad MAP sensor.
I read about a map sensor mod on the "other" site . It involed a 1k and a 10K resistor in the map sensor. fooled the PCM into thinking it always had 20 psi of boost. well I tried it, no change, just a CEL. so I got ambitious today and tried to take readings from my map sensor, used an air compressor to simulate boost, at 0 psi and at 20 psi the resistances, and the voltage across all the teminals was the same. It NEVER changed, from 0 all the way up to 40 PSI, nothing happened, I never even got a CEL at 40 psi.
Anyone know how these things work, like what kind of signal does it send back to the PCM, and does it sound like mine is bad????
Diesel Rod
Anyone know how these things work, like what kind of signal does it send back to the PCM, and does it sound like mine is bad????
Diesel Rod
#2
Thread
Thread Starter
Forum
Replies
Last Post
Mydiesel250
1999 - 2003 7.3L Power Stroke Diesel
51
06-01-2023 07:06 PM
Tugly
1999 - 2003 7.3L Power Stroke Diesel
0
12-25-2016 09:58 AM