fasteddieyj
NAXJA Forum User
- Location
- Hanover, PA
Trying to diagnose a pretty good hesitation on my 88 4.0. One of the things I looked at was the map sensor. Ran a test on it today and got the following results: 4.8 volts with the key on input and output, 2.3 volts with the engine running. The reference material I have say the spec for the voltage with the engine running is .5 - 1.5 volts. My buddy, who I bought jeep from, said that when the map sensor was replace it was done so because it showed 1.5 volts, which he was told was out of spec. Anyone tell me what the correct spec is? It only has about 9k miles and 2.5 years on it which makes me wonder why it would go so quick if it is in fact bad.