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bracket4.7
Dodge Dakota
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10/30/2007
13:01:37
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 Subject: High Idle and Exhaust Leak
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Message:
My 2002 4.7 idles high and erratically and there is a minor exhaust leak. What i was thinking was that there is some sort of valve that goes from the exhaust to the throttle body that is causing the throttle body to get dirty and the exhaust leak. I cleaned the throttle body and it ran perfect for a couple weeks until the throttle body got dirty again. I think it may be part of the emission system that is malfunctioning and causing exhaust to go into the throttle body. I was looking around on the internet and i found an air management valve?? which may be what it is malfunctioning. Any ideas??
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Lee
Dodge Dakota
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10/30/2007
14:52:59
| RE: High Idle and Exhaust Leak
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Are you talking about the EGR system? There might be some checks for the EGR valve. Maybe it's stuck open all the time? I'll let someone who's actually worked on the EGR stuff take it from here!
Lee
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bracket4.7
Dodge Dakota
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10/30/2007
16:05:00
| RE: High Idle and Exhaust Leak
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thanks lee ill look into it...and i forgot to add that sometimes the idle will surge (go up and down) and if i rev it up a little in neutral the idle will go down to regular rpms most of the time anybody else have any ideas?
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Kowalski
GenIII
10/30/2007
17:12:19
| RE: High Idle and Exhaust Leak
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Message:
Surge could be a bad TPS. No EGR to the throttle body on a 4.7. Did you take the TB off to clean it, so you could clean the IAC ? Don't twist the plunger.
Lead, follow, or get out of the way
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jayb
Dodge Dakota
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10/30/2007
17:29:42
| RE: High Idle and Exhaust Leak
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Message:
probably TPS. fix that exhaust leak too. Not going to be related.
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bracket4.7
Dodge Dakota
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10/30/2007
19:57:45
| RE: High Idle and Exhaust Leak
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Message:
thanks guys i appreciate it, how much is it to replace the tps and where is in located on the engine? and also the truck only acts up at idle never cruising or wide open throttle, is it still probably the TPS?
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bracket4.7
Dodge Dakota
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10/31/2007
11:49:43
| RE: High Idle and Exhaust Leak
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Message:
Also, how hard is it to replace the a/c condenser?
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bracket4.7
Dodge Dakota
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11/01/2007
23:10:57
| RE: High Idle and Exhaust Leak
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Message:
anyone?
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Bob Lincoln
Dodge Dakota
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11/02/2007
07:19:33
| RE: High Idle and Exhaust Leak
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PCV system will foul the throttle body.
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Kowalski
GenIII
11/03/2007
12:00:42
|  RE: High Idle and Exhaust Leak
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Message:
TPS is on the throttle body. Did you miss my earlier question ?
Lead, follow, or get out of the way
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bracket4.7
Dodge Dakota
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11/03/2007
12:43:56
| RE: High Idle and Exhaust Leak
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Message:
i had one of my mechanic buddies clean it so im not sure if he cleaned the iac
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