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Old 03-10-2017, 01:04 PM   #15
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Quote:
Originally Posted by gmaiuro1 View Post
After reading the code they said it was the high pressure pump. Let you know after they say it is fixed. Thank god for the extended warranty.
Ok, I will explain what happened with my 400 ISL. We were getting ready to pull out of a camping spot. The last thing we usually do before starting the engine is bring in the slides. We started bringing in the main (hydraulic) slide and it came in about 6" and quit. The motor would not run. So, I brought the slide in by hand, it took about 45 minutes of pumping. Ok, we're ready to go. Not! I start the engine and put it in gear and it kills. I do it again, same thing. The third time, it runs for about 10 seconds and kills and "check" brake fuse" flashes up on my information center on the dash. So, I call Freightliner to find out what fuse they are talking about. The technician tells me what she thinks it is and I check them out and they are all ok. I call them again and the say it could be a bad connection on the parking brake. Oh, and the slide motor still doesn't run. So, I check that out, all ok. The next day, I call them again. The tech says to try to start it and see what the volt gage says while it was running. It was reading about 12.6 volts. He says not good your alternator may be bad. Then he says try this, start your engine and hold the battery boost button in. I do that and it stays running. Now he says keep holding it in and put it in gear. It stays running. Now he says check the alternator. It read 14V. He says now put it in neutral and set the brake and finally remove your finger from the boost button. Not easy to do in that order with just two hands, so had the wife help. It stayed running and the alternator was still putting out 14V. Amazing! Now. The big test. I leave the engine running and put the drivers seat all the way forward and try the main slide, it worked fine. ???. The tech said that a relay probably stuck open and when we added the boost voltage from the house batteries there was enough juice to close it. He told me to keep a close eye on the alternator output, though. But, it's been fine ever since. We drove it 1600 miles down here to south Texas last fall and all was good. But now, I always start the engine and check the alternator output before I bring in the main slide. Do you not have an information center on your dash, where messages come up if something goes wrong with the engine?
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Old 03-10-2017, 08:02 PM   #16
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So was it the high pressure pump that was bad? And if you do not mind, how much is the cost of one of them pumps. It might help somebody else that has the Cummins ISL engine.

I have a Cat engine and I did have a Huei pump fail once, and I was like you I had extended warranty. But the insurance paid $3400.00 for the pump and labor. I paid $50.00 co-payment.
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