SLOW cranking when engine warmed up
Hi all, Newbie here getting my parents 2002 rexall back on the road. Installed new batteries but battery is dead after just a few minutes of running. Starts okay when cold ...runs smooth as glass, v...
Forum Discussion
When you say battery is dead after a few minutes of running are you referring to the engine battery?
If so then you should check all the wiring from the battery all the way back to the starter motor. You should also check the connections at the alternator and from there back to the battery.
If all of that is good then you need to check the amperage/voltage exiting the alternator.
There could be a number of reasons for this. It could be that the connections somewhere are broken or corroded. It could be the alternator has failed. It could be a bad fuse somewhere.
Back in the old days, before computers we used to start the engine and remove the cable from the battery. If the engine died then we knew the alternator was bad. Not sure if that is a good idea with all the computer controlled components on modern vehicles.
If it were mine a gentle tug on the connections would be the start. Then I would remove all the connections from the alternator to the battery and clean and dielectric grease them. I would also clean and grease all the connections to the starter motor.
If that did not solve the problem I would have (or would do myself) the alternator tested.
If so then you should check all the wiring from the battery all the way back to the starter motor. You should also check the connections at the alternator and from there back to the battery.
If all of that is good then you need to check the amperage/voltage exiting the alternator.
There could be a number of reasons for this. It could be that the connections somewhere are broken or corroded. It could be the alternator has failed. It could be a bad fuse somewhere.
Back in the old days, before computers we used to start the engine and remove the cable from the battery. If the engine died then we knew the alternator was bad. Not sure if that is a good idea with all the computer controlled components on modern vehicles.
If it were mine a gentle tug on the connections would be the start. Then I would remove all the connections from the alternator to the battery and clean and dielectric grease them. I would also clean and grease all the connections to the starter motor.
If that did not solve the problem I would have (or would do myself) the alternator tested.
