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OT: Dodge 1500 dies at speed coasting

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Roger in Iowa

10-01-2007 08:09:40

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Rather un-nerving to have a vehicle die when doing down a mountain grade on interstate at speed. Engine stops. No power steering and probably brakes and transmission does not hold back. Put in neutral and restart.First indication was when warning lights came on dash for oil, etc.

Has happened twice since then when coasting slow to turn. Once into driveway. Restarts and runs fine. Only engine code ever shown was P0601.

Anyone had similar experience with 2001 Dodge 1500, 4WD with auto and 5.9 gas.

Roger in Iowa

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Darin in Nebraska

10-02-2007 09:37:09

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Re: OT: Dodge 1500 dies at speed coasting in reply to Roger in Iowa, 10-01-2007 08:09:40

I had a 94 Dodge Ram with the 5.9 in it with a auto. It would die while driving when you let up off the gas pedal. I changed the Idle Air control valve and it never did it again. Just my thoughts. There no to bad to change and the price isn't terrible to.

Thanks Darin

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pair-a-dice farm

10-01-2007 17:24:27

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Re: OT: Dodge 1500 dies at speed coasting in reply to Roger in Iowa, 10-01-2007 08:09:40

I've got a 2005 1500 with a 4.7 that does something similar only at slow speeds. I live on a gravel road and sometimes it will die 2-3 times before I get to the blacktop. It's been to the dealer several times and they can't figure it out. It is probably just a lemon and any brand can have them but this is my first and last dodge.

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Mathias NY

10-01-2007 13:02:43

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Re: OT: Dodge 1500 dies at speed coasting in reply to Roger in Iowa, 10-01-2007 08:09:40

I have a '97 1500, 4wd, manual transmission, 200k miles. Over the 5 years (and 100k miles) I have owned the truck, I have had something similar to what you described. A couple of times a year, I will be going down a hill, with my foot off the accelerator, I'll put the clutch in, and watch the tachometer plummmet to zero. The truck always refires without trouble, it only happens when I am using the engine for braking (near idle rpms), and it has never thrown a code. I have speculated that water in the gas may play a roll in the problem because if I add a bottle of isopropal the problem seems to go away.

Good luck.

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Bryan In Iowa

10-01-2007 10:45:39

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Re: OT: Dodge 1500 dies at speed coasting in reply to Roger in Iowa, 10-01-2007 08:09:40

90 % of the Dodges that have come in my shop with a 601 code took a new PCM to fix .

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Vern-MI

10-01-2007 10:34:49

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Re: OT: Dodge 1500 dies at speed coasting in reply to Roger in Iowa, 10-01-2007 08:09:40

I'm no expert but got into this when I was trying to control an ECC IV for testing transmission pressure conrtrol valves.

In general, a checksum is simply a computed value to which another computed value is compared to assure data integrity. For example, a unit of data is to be transmitted across some communications medium, a piece of wire, for example. Prior to sending the data unit, the sending device applies the data to some algorithm (formula) and appends the result of the computation to the data unit as a "checksum". The receiving device will perform the same computation on the data unit and compare it to the checksum that was appended to the data unit prior to transmission. If the checksums are equal, it is assumed that the receiver received the correct data.

So My first guess would be that you have and old battery and that the system voltage drops when the engine speed diminishes causing a sag in system voltage. My next guess would be a bad powertrain control module or ECU.

Keep in mind these are only guesses.

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rhouston

10-01-2007 11:44:13

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Re: OT: Dodge 1500 dies at speed coasting in reply to Vern-MI, 10-01-2007 10:34:49

I had a bad battery once and also a bad positive battery cable once on my 97 1500. I would get all sorts of weird engine codes. The symptom most often noticed was it would not idle (acted like there was a large vacuum leak) voltmeter in dash would also read high when running. It would be easy to clean the battery teminals and try a known good battery before you head off to the dealer. The bad battery cable on mine was where the cable went into the battery post connector.

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MF Poor

10-01-2007 08:43:13

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Re: OT: Dodge 1500 dies at speed coasting in reply to Roger in Iowa, 10-01-2007 08:09:40

P0601 error code is "Internal Control Module Memory Check Sum Error". Now what that means is beyond me.

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mark

10-01-2007 11:29:06

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Re: OT: Dodge 1500 dies at speed coasting in reply to MF Poor, 10-01-2007 08:43:13

Yeah...I love it when folks talk in technogarble..like military guys do when they get together.

Nobody but them know what the hell they are saying. About like being in a Chinese restaurant while they jabber back and forth...you never know if they telling Flung Kum to go check the rat traps or make sure he doesn't burn the fried cat.

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