I have a 1995 pete with a 5EK cat motor, i am having a problem with performance, while going down the road it will cut out like it is a throttle positioning sensor with no engine light. Does this mean a bad ecm?
no engine light
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by slowhanddrt, Aug 6, 2020.
-
-
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
-
The TPS could loose - check connections between the throttle and the sensor
magoo68 Thanks this. -
Could be, but I would rule out all the harness’s first. I had a similar problem and it was the temp sensor harness under the alternator. It never gave a light,but logged all kinds of codes.
spsauerland and BoxCarKidd Thank this. -
Then one day it cut back like the key was turned off. It was very brief and did it several times. Pro Link showed a code and low oil pressure at the same time. Manual gauge reading was good. When stopped it had logged no active or inactive codes. Replaced the oil pressure sending unit and never had another problem.
That is very odd and it is more likely a problem with your TPS or its wiring. However some of those type things happen. I believe there are some onboard code readers that are relatively inexpensive that could do that. Some may be able to read throttle percentage. If it is reading 20% and you have it on the floor you know there is a problem there. That will not log a code because it sees nothing wrong. ECM just adding fuel to the amount it sees requested.062, spsauerland and Rideandrepair Thank this. -
BoxCarKidd and spsauerland Thank this.
-
Get it scanned regardless. It is probably logging codes. Check engine light might not be working. Never jump to an ECM first. They are rarely bad.
AModelCat, Goodysnap, BoxCarKidd and 2 others Thank this. -
Heavyd, spsauerland and 062 Thank this.
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.