New parts acting funny... - Diesel Truck Forum -
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post #1 of 7 (permalink) Old 01-10-2008, 01:15 AM Thread Starter
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New parts acting funny...

Got a 2000 24V just replaced the lift pump and VP44 and now it idles high and rough after getting up to high speeds for any sustained amount of time? It doesn't idle smooth again till you shut off the truck and restart it. It runs smooth at high RPMs just doesn't like to idle normal afterwards. Any ideas on what's not doing what it's suppose to? Thanks.
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post #2 of 7 (permalink) Old 01-10-2008, 01:37 AM
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Is it a stock Vp or a hotrod pump?

04 Duramax
93 Dodge D-250
91 Dodge D-350
84 Dodge D-150
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post #3 of 7 (permalink) Old 01-10-2008, 01:41 AM Thread Starter
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stock replacement vp and LP relocated to tank
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post #4 of 7 (permalink) Old 01-10-2008, 02:32 AM
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That was my frist thought too Andy. Where did you get the replacement VP from? Sure sounds like a Hot Rod pump to me. If you are not noticing any thing wrong, no codes, loss of power, etc I would just call consider it an added bonus and don't worry about it.
post #5 of 7 (permalink) Old 01-12-2008, 02:46 PM
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it could be a bad reman to. was it new or reman.


01 2500 dodge 24 valve 200k miles, striaght pipe exhaust, bully dog j-hook,home made cold air intake,Full Georend tranny,billet input,billet output,lam flex plate, TQ lock-up switch, Holley Blue pump, RV275's, BD top speed elimintator w/RAD Hot Edge juice w/Attitude
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post #6 of 7 (permalink) Old 01-12-2008, 03:18 PM
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Reset your APPS sensor and double check your APPS connection... A bad APPS ground could cause it to idle high...

Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser
116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
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post #7 of 7 (permalink) Old 01-13-2008, 11:22 PM
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How high is it idling? I'm with mopar on this one. My stock one will do this too from time to time idling about 50-125rpm high after its been up to a higher RPM and sustained for a little while.

2000 2500 reg. cab 4x4 auto 577hp
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