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It reaches its normal operating temperature, it will stall when I take my foot off the gas?

Tiny
CHRISW913
  • MEMBER
  • 1998 DODGE RAM
I've read many of the posts under the stalling category but haven't found any that quite fit my problem. This has been happening for about three weeks. Truck starts fine, will run fine for about 10 minutes and just as it reaches its normal operating temperature, it will stall when I take my foot off the gas. It will do this for the next few minutes, every time I take my foot off the gas. It happens so precisely every time that I can predict exactly when it will happen. Once the truck is completely warm, it will run fine again. I have changed the TPS, the IAC valve and cleaned the throttle body. I took it to the Dodge dealership where I purchased it, they ran a diagnostic and can't find anything wrong with it. Could it be water in the fuel line, bad fuel pump, clogged fuel filter? I am at a complete loss! Thanks for your help. Chris
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Monday, July 6th, 2009 AT 8:32 PM

10 Replies

Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
This will probably cause you to have a check engine light, but try unplugging the coolant temp sensor for the computer, and the air intake temp sensor.
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Monday, July 6th, 2009 AT 10:23 PM
Tiny
CHRISW913
  • MEMBER
  • 3 POSTS
Hi Craig,

Thanks for the suggestions - unfortunately, still stalling as before. Could it be the fuel pump? I looked for 'sparks' while running it in the dark to see if there were any cracks in the distributor or bad plugs, but I didn't see anything.

Thanks,

Chris
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Sunday, July 12th, 2009 AT 8:56 AM
Tiny
BUDDYCRAIGG
  • MECHANIC
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Mmmm, this is going to be a toughie.
I cant think of anything that would cause a problem between stone cold and normal operating temp.

If dodge couldn't figure it out, and they physically had it to look at. Well this is gonna be a toughie.

Ok, next I would do a fuel pressure test. And keep watching the gauge until it stalls. (I assume it will do it just sitting there idling)

then after it's cooled back down, next test would be unplug all of the O2 sensors.
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Sunday, July 12th, 2009 AT 4:21 PM
Tiny
HOTPEPPERS227
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  • 7 POSTS
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Monday, July 13th, 2009 AT 3:44 PM
Tiny
HOTPEPPERS227
  • MEMBER
  • 7 POSTS
ChrisW913,
I have IDENTICAL symtoms in my 2000 Ram 2500, 4X4, 22000 miles. No codes etc. Fuel pressure good. New plugs, wires, cap/rotor, IAC, temp sensors and more. Tired of buy it and try it. If you find the culprit, would you let me know, and if I find it I will let you know. Thanks.
Steve227
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Tuesday, July 14th, 2009 AT 6:44 AM
Tiny
HOTPEPPERS227
  • MEMBER
  • 7 POSTS
2000 Dodge stalling. Mine was the crankshaft position sensor. The nose broke off the starter and the piece hit the sensor and bent it out of position. New sensor and starter-- ALL IS WELL !
Steve227
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Saturday, August 8th, 2009 AT 12:02 PM
Tiny
CHRISW913
  • MEMBER
  • 3 POSTS
Thanks for everyone's help. Turned out that three sensors all went bad - crank, cam and oxygen. The check engine light was not on the first time I took it in to the dealership for repair, which is why it didn't come up on the diagnostic check. Been running for about a month now with no problems. Thanks again.
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Friday, August 28th, 2009 AT 8:45 AM
Tiny
BUDDYCRAIGG
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Good to hear
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Friday, August 28th, 2009 AT 11:31 PM
Tiny
1340RICK
  • MEMBER
  • 1 POST
Mine was doing the same exact thing, changed the bank 1 sensor and that fixed it
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Tuesday, February 22nd, 2011 AT 12:50 PM
Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
Glad to hear it's fixed.
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Tuesday, March 1st, 2011 AT 7:17 AM

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