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BrianGSC
Dodge Dakota
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6/20/2005
16:04:18
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 Subject: RPM Jump
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Message:
I have a 2000 4x4 Quad cab with the 5.9. Here's the problem...
When I am on the freeway going approx. 65-70mph at @ 2000 RPM, I will notice sudden jumps in the RPMs. It will jump anywhere 100 to 300 RPMs. I can notice this problem more in CC, but it doesn't have to be in CC to occur. I took it in to the mechanic, and it wasn't throwing out any codes. Because no error codes came up, my mechanic says it is a tranny problem. HELP!
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jayb
Dodge Dakota
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6/20/2005
16:15:05
|  RE: RPM Jump
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Message:
your torque converter lockup is screwed up. not sure why, but i would check the wire connectors for it.
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BrianGSC
Dodge Dakota
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6/20/2005
16:38:06
| RE: RPM Jump
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Message:
Could it possibly be a TPS, even though there are no error codes being thrown?
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BrianGSC
Dodge Dakota
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6/20/2005
17:07:43
| RE: RPM Jump
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Message:
Could it possibly be a TPS, even though there are no error codes being thrown?
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99DAK
Dodge Dakota
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6/20/2005
22:45:31
| RE: RPM Jump
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Message:
Yes, that's a typical symptom for a bad TPS, and no it won't throw a code.
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BrianGSC
Dodge Dakota
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6/20/2005
22:56:50
| RE: RPM Jump
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Message:
Today I noticed my RPMs decrease to 600, then jump back up to 1000 while idling at a red light. Odd. I really don't think it is a transmission problem. I think I will replace the TPS and see if that helps.
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jayb
Dodge Dakota
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6/21/2005
20:08:07
| RE: RPM Jump
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Message:
if the tps were bad, most likely it wont go into overdrive what so ever. rarely does a tps go bad, and overdrive still works.
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jeffro
Dodge Dakota
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6/21/2005
22:26:23
| RE: RPM Jump
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Message:
I just had same problem.injectors for #2,4,and 8 were sticking open.Had my injectors cleaned and problem went away.hope this helps.
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Rustywrenches
Dodge Dakota
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6/22/2005
00:24:02
| RE: RPM Jump
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Message:
BrianGSC, mine was doing the exact same thing and changing out the TPS cured it! Bought the TPS at Napa for around $30
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Super-bee
Dodge Dakota
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6/22/2005
10:30:23
| RE: RPM Jump
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Message:
my 2001 ram 5.9 did the same thing
first they changed the TPS and a bad U Joint
that cured it for about a week
i then took it back and took the guy for a test drive and it did it while he was driving
they updated i think the vavle body and a few other tranny components and it has never done it since
mine would always do it under load, ie: going up hills or towing the snowmobiles
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BrianGSC
Dodge Dakota
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6/24/2005
13:31:43
| RE: RPM Jump
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Message:
OK...I replaced the TPS, and now everything is working OK. I drove it for about 20 miles, and it worked fine. I have a big road trip on Monday so that will be the true test...
Thanks everyone for your input!
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BrianGSC
Dodge Dakota
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7/04/2005
16:51:52
| RE: RPM Jump
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Message:
OK. I just took a road trip (1,300 miles), and everything is fine. Sweet.
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brad Bedford
Dodge Dakota
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7/05/2005
00:21:32
| RE: RPM Jump
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Message:
Had same prob after removing the TPS connector when changing plugs. 2000-2150 at 70mph while in cruise. Did it when out of OD too. Read posts here and cleanned the connector contacts and put it on and off the connector a few times. Now all is fine. Glad I didn't need tranny work, which is what I suspected,,,
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