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Luke
Dodge Dakota
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3/29/2004
09:30:33
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 Subject: Cruise Problems?
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Message:
Has any one seen this problem? I have a 99 3.9L 4x4 Dak. When I am driving at 60 MPH with my cruise on I can fell a VERY suttly shudder or surge and my RPM's jump from 1800 to 2000 RPM. I take off the cruise and it goes away. I have noticed this at different speeds and it always seems to jump 200 to 300 RPM's. It is usually only for a sec but on occasion it lasts as long as 3 sec or so. Also when idling if I turn my wheels at a complete stop my truck's RPM's drop to something like 300 RPM's. It picks back up soon after I move the wheel I was just wondering if this is normal.
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93Dak
Dodge Dakota
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3/29/2004
11:27:33
|  RE: Cruise Problems?
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Message:
Turning your wheels while the truck is stopped will cause your RPMs to drop because the power steering pump puts a load on your engine.
The surge at highway speeds doesn't sound quite normal.
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Darryl
Dodge Dakota
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3/29/2004
11:59:38
| RE: Cruise Problems?
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Message:
Luke:
I had the very same problem (99 V6 Auto), It is
the TPS (throttle position sensor).
While under cruise (or not) at 60-75 mph, on
flat freeway it would surge just like yours.
TPS!
Darryl
|
or
Dodge Dakota
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3/29/2004
17:05:38
| RE: Cruise Problems?
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Message:
the lockup torque converter could be unlocking and locking. are you runnin on a dead flat road or are you going up hills, even slight ones when it happens, if going up & down hills its the torque converter.
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99DAK
Dodge Dakota
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3/29/2004
17:56:04
| RE: Cruise Problems?
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Message:
You're both right. TPS is one of the things that determines converter lock/unlock. Luke, it's probably the TPS, very common. $25 part, easy 2-minute fix.
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Luke
Dodge Dakota
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3/29/2004
21:19:52
| RE: Cruise Problems?
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Message:
Thanks all. I just tryed to adjust my TPS to .75v a few day ago and now this is happening so I will check it out. It was happening on flat roads. Is this something I can get at NAPA or autozone, or do I have to go a dealer?
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Darryl
Dodge Dakota
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3/29/2004
22:57:28
| RE: Cruise Problems?
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Message:
Dealer price is about $70.00, I saw one at either AZ or NAPA for around $30.00.
Darryl
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Darryl
Dodge Dakota
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3/29/2004
23:00:47
| RE: Cruise Problems?
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Message:
Autozone:
Part# tps-333...$26.00
Darryl
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Luke
Dodge Dakota
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3/29/2004
23:23:59
| RE: Cruise Problems?
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Message:
Thank you, Thank you, Thank you!
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cjski
Dodge Dakota
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3/30/2004
00:53:43
| RE: Cruise Problems?
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Message:
make sure that when you install the new one, you cock it 20 deg. clockwise first, then place it in position and turn it back to line up the holes. that 'preloads' the 2 tabs that work with each other.
chris
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daffydak
GenIII
3/30/2004
02:18:08
| RE: Cruise Problems?
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Message:
just a thought, but shouldnt you reset the pcm after the .72V mod??? i'm not sure, but its worth the try (it might save you some $$$$)
just my .02
Dan
mopar=mopower
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Luke
Dodge Dakota
JOIN HERE
3/31/2004
09:25:20
| RE: Cruise Problems?
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Message:
thanks Daffy I will give it a try.
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