themow
NAXJA Forum User
- Location
- South jer z
I have seen a slight decrease in my mpg as of late accompanied by a cel. Went to autozone today and came up with p0118 engine coolant temp circuit high imput. also a bad o2 which may be my o2 heater and is prob my mpg problem.
Anyway, im looking for the casue of the coolant temp. I checked temp sensor at the t-stat housing cold then hot....cold read 12.5ohms hot read 1.2 so it seems to be opening when hot....theres 5v at the connector when powered...i assume those reading are normal. The t-stat is a new chrysler part as of last year....strange story behind that...
Jeep was running great but coolant was brown so i decided to flush it and change the t-stat....after it was all done and purged, the temp ran at one tick colder on the temp gauge. I swapped the cheapo stant for a chrysler unit and it still ran a tick colder.....only thing i could think of it the fan shround that i broke during the t-stat removal....dont see how that would effect the temp tho....
98 4.0 ax15
Anyway, im looking for the casue of the coolant temp. I checked temp sensor at the t-stat housing cold then hot....cold read 12.5ohms hot read 1.2 so it seems to be opening when hot....theres 5v at the connector when powered...i assume those reading are normal. The t-stat is a new chrysler part as of last year....strange story behind that...
Jeep was running great but coolant was brown so i decided to flush it and change the t-stat....after it was all done and purged, the temp ran at one tick colder on the temp gauge. I swapped the cheapo stant for a chrysler unit and it still ran a tick colder.....only thing i could think of it the fan shround that i broke during the t-stat removal....dont see how that would effect the temp tho....
98 4.0 ax15