Dealer likes letting my engine idle - how long is too long? - Jeep Wrangler Forum
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Old 02-18-2014, 11:53 AM
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Dealer likes letting my engine idle - how long is too long?

I've brought my Wrangler in a few times to have the door seal issues I've been experiencing corrected.

Both times that they've done their "water test" they've left my engine idling for an hour and a half (I have a progressive discount doodad, and I can see when the engine is on/off).

Is letting the engine sit and idle for that long "healthy"? Should I chew them out? Would it cause any excessive heat issues?

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Old 02-18-2014, 11:57 AM   #2
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It's not good if doing it every day.

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Old 02-18-2014, 11:59 AM   #3
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Agreed.. the dealer (service department etc) should be held accountable for their actions. However, unless their where checking something within the engine, Mind you we had to have our cat sys check and replaced so having the engine running after the fact was necessary.. but our dealer hardly went an hour running time.
If you can get a print out of the actual data you have I would confront (for lack of a better word) the dealer about this..
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Old 02-18-2014, 12:00 PM
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Not every day - just twice. once two weeks ago, and then yesterday. This had nothing to do with the engine - this is water leaking in through a door seal (letting a hose run over the roof for an hour and a half).

What should I even say? "You let my engine run too long, give me a new one?" or just ask 'em for some gas?
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Old 02-18-2014, 12:36 PM   #5
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They might try to tell you they were running the air inside to find air gaps in the seals. Every air gap is a potential water entry point. Soapy water would bubble if air was coming through.
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Old 02-18-2014, 12:43 PM   #6
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Works on tires to figure out if a puncture goes all the way through. Not so sure about the AC making enough air pressure for that. So could be completely off.
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Old 02-18-2014, 12:45 PM   #7
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I have been dealing with cooling system issues over the last few months. Mine has been left idling in the shop for hours on multiple occasions now. I share your concern and frustration.
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Old 02-18-2014, 01:20 PM   #8
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True, checking the AC could have been the reasoning.. as for what you should ask.. well hard to say.. I mean if the gas is really important to you.. but I wouldn't just hand the print out and say "you own me" I would approach this with a bit more tact.. like "I noticed your running my engine a long time when it wasn't really being serviced, can you explain this?"
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Old 02-18-2014, 01:20 PM   #9
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Ain't no thing. I'd be more concerned if they were hitting rev limiter than idling. But you could just say my doodad notified me so I thought I'd inquire. They may give you a reason to justify it or hook you up with a car wash or something (if you are tactful)
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Old 02-18-2014, 01:56 PM
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Ain't no thing. I'd be more concerned if they were hitting rev limiter than idling. But you could just say my doodad notified me so I thought I'd inquire. They may give you a reason to justify it or hook you up with a car wash or something (if you are tactful)
I don't want a dang car wash 'til the leak is fixed
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Old 02-18-2014, 02:01 PM   #11
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There is nothing harmful in letting a modern vehicle idle. There is no load on the engine and the cooling system will work as designed.
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Old 02-18-2014, 02:21 PM   #12
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Yeah, letting it idle for that long won't bother it at all. Our technicians in the field let the motor idle for hours every day and they don't have any issues due to the idling.
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Old 02-18-2014, 02:35 PM   #13
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There is nothing harmful in letting a modern vehicle idle. There is no load on the engine and the cooling system will work as designed.
I agree. I would still ask them about it.
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Old 02-18-2014, 02:57 PM   #14
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It won't hurt a thing, other than your wallet for the gas!
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Old 02-18-2014, 03:11 PM   #15
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I agree with the gas part...if my dealer is running my motor for an hour, they better have a good reason or they better fill my tank.
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Old 02-18-2014, 03:18 PM   #16
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I don't want a dang car wash 'til the leak is fixed
lol. I'm sorry. I agree. Just trying to stay positive
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Old 02-18-2014, 03:19 PM   #17
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I agree with the gas part...if my dealer is running my motor for an hour, they better have a good reason or they better fill my tank.
that and maybe an old fashioned
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Old 02-18-2014, 04:03 PM   #18
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Cops do this all the time and their cars easily go 100,000 miles without major issues. Yes, it will use gas, almost a gallon an hour.
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Old 02-18-2014, 07:52 PM   #19
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Don't feel bad. Here's one of God only knows how many reasons why I prefer to do my own work whenever possible. A few years back I had an issue that I couldn't resolve with a work van, so I decided to bring it to a local guy who was supposed to be good. My brother's friend worked there so what the heck. This van had twin gas tanks, one was full the other had 3/4+ in it. They smoke tested it, found nothing, so they left it running to get hot to smoke test it again. It ran until it completely ran out of gas in the tank that had 3/4 +of gas. When I came back the next day to pick it up I saw they switched over to the full tank. I switched it back to the other tank which was bone dry. I asked why it was out of gas in the other tank. They fessed up, and said they left it running and forgot about it. I wonder how long it was running to empty a 22 gallon tank that was 3/4+ full. BTW they never resolved the problem either.
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Old 02-18-2014, 08:27 PM   #20
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If you have to take it back, take it on an empty tank. It's cheap, but if they REALLY need to idle that long, you'll at least get some gas out of the deal.

That being said, ask for a reason why it has to idle for that long. Seems like a long time for a diagnosis. Or anything for that matter.
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Old 02-20-2014, 09:46 AM
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I forgot to ask, but I think I know why - they used the floor heater to dry out the carpets.
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Old 02-20-2014, 08:33 PM   #22
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Idling wears your engine out. So does driving it.
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Old 02-20-2014, 09:40 PM   #23
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Dealer once parked my truck with no roof in a rain storm.

you cannot trust them as far as you can throw them.

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