Additionally, the vehicle stalled without any warning indicators illuminating. I did not see any amperage readings,if your batteries were pretty well dead and you installed the alternator with about dead batteries it would be normal to show low voltage until the batteries came up,but you should be getting rated amperage output from the alternator. I did this and the unit is 'cooling' however is. The vehicle was taken to dealer for diagnosis where it was advised that the alternator needed to be replaced. Was not under warranty for repairs. While driving approximately 55 mph, the vehicle stalled and the instrument panel warning indicators illuminated. Front end would make clunking noise while turning.
The approximate failure mileage was 1,000. The dealer said the entire harness will have to be replaced along with the alternator which was putting out 17 amps. Then it may be a faulty ground somewhere. The failure mileage was 162,000. Beware of high output 150A and up hopped up standard units they just burn up. This is the fourth time vehicle has been taken to the dealer for alternator. Then load test each, then check alternator output.
Consumer states engine failure the consumer stated the engine failure nearly caused an accident, when it shut down on a major highway. The vehicle was not repaired. Since new alternators continue to over charge the battery, the problem could be an external voltage regulator. This must be a service plug because it dead ends. Real high output scratch made alternators are expensive as hell. The contact coasted the vehicle to the side of the road, turned off the engine, and restarted the vehicle. Took to dealership and was informed that rotors were warped.
Try cleaning the battery cables and terminals and ensure they are free of any corrosion at the battery as well as at the ground on body and the hot wire too. Radio, lights, locks works but the truck will not start. The vehicle was towed to an independent mechanic where it was diagnosed that the battery, alternator, and fuel injection control module needed to be replaced. The manufacturer was notified and did not assist. While driving 70 mph, the brake pedal was depressed and traveled to the floorboard.
Check for an external voltage regulator and clean up all the connections to the alternator and where all the wires come from. No police report was filed. The failure mileage was 57,584. If you don't notice anything staying on such as interior lights, radio, etc. The local dealer was not contacted for diagnostic testing or repairs. Figured it out by accident as I was cleaning the passenger side battery I looked down and on the fender by the bat was a connector with a green wire loop same color as the alt wire connector. I know some things can be prevented with heroic measures but why dont cummins and duramax fail in these ways.
I cleaned off both batteries, checked some fuses, re-attached battery cables and truck still will not turn over and start. Field circut fuse is good. The vehicle was not repaired. The contact stated that the brake pedal had to be pumped several times and the steering wheel became difficult to maneuver. The alternator and battery were replaced three times, the valve assembly, high pressure and regular oil pumps were replaced and a new egr shield was installed. It first would not start but would get lights on the dash, so I had the battery and alternator tested both on and off the car. But it takes a few minutes before it will show a normal charge.
The vehicle also stalled while driving down the interstate. The dealer replaced the engine harness and cam sensor, but the failure recurred. The manufacturer was not notified of the failure. The first three times, the vehicle would not start and the alternator was replaced by the dealer. They both tested bad 12. My Super Duty F250 Diesel told me to pull off road safely then died.
Yup never changed the oil. The vehicle was repaired but the problem persisted. It is easy to make an alternator put out more just as it is easy to add more fuel to a diesel and have it do wheelies but they dont dissipate heat and burn up. Due to the fact that it takes so much current to start that diesel it is not unusual for the alternator to get up to maximum charging levels within 10 seconds. The approximate failure mileage was 100,000. Electrical crossed wires in alternator system were smoldering.
If so, that is where you will need to start troubleshooting for a loose ground. Subsequently, the consumer also experienced a failure with the fuel injection control module. When the dealer was contacted, they recommended the vehicle to be towed to the dealership. After start up it will show charge voltage at both batterys. Anyone with half a brain knows they are crap. Could also be an accessory that is staying running without your knowledge that is draining the battery. The egr valve replaced three times, the egr cooler, oil cooler were all replaced.
Hello Thanks for the donation. The dealer tested the system and determined that the alternator had overcharged the system and burnt the main harness coming out of the alternator. Key on voltage starts out at about 11. The contact stated that while driving 70 mph, the vehicle stalled without warning causing the driver's side rear to crash into a guard rail. The check engine light illuminated due to a failed egr valve. Pulled it apart and cleaned up the pins plugged it back in and presto charging perfectly.