2002 Express LT(5.7/4L60E) tricky problem stalling only on long duration trips
#1
2002 Express LT(5.7/4L60E) tricky problem stalling only on long duration trips
The van drags down revs until bogs and dies. Just started recently and does it only on trips of 2 hours or more when it is hot outside. Feels like a load is dragging it down(sensation similiar to bogging a manual by going 1st gear to 5th or how power drops when the ecm doesn't get a reading from the crank sensor). After it cools for 1.5 hours it drives as normal again, repeat process. No check engine lights. I've recently tracked my transmission temps and noticed they are getting higher than they should(210°-220°). Around town driving/commuting it has no symptoms. The following have been done recently but were not done to resolve this issue:
Crank Position sensor
Mass Airflow sensor
Fuel pump
fuel filter
Crank Position sensor
Mass Airflow sensor
Fuel pump
fuel filter
#2
Go to auto parts and have them check for error code. Or buy one and check for codes when it stalls.You will be buying many parts if you keep guessing...
Last edited by wyn_fox; July 2nd, 2018 at 11:19 AM. Reason: I'm stupid.. lol
#6
Condition still persists. Had to drive it 2.5 hours and 120 miles to get it to bog and die this time. Threw pending low voltage on all 4 O2 sensors this time. Drives like a champ once it cools down and even long distance if it's cool.