2000 7.3 Idle Problem
Thread Starter
|
More Turbo
Joined: Sep 2016
Posts: 580
Likes: 4
From: Michigan
2000 7.3 Idle Problem
One reading is from KOEO and one is from KOER. Thsi was with the truck warm and at idle. My ICP is low as is my idle speed. When this happens the truck shakes and develops a fuel knock. The truck is not using oil and i am running 15w-40 synthetic. I pulled the ICP plug out and there is a thin film of oil inside. Running the truck with the ICP unplugged turned on the SES light and made it run worse. Plugging it back in and restarting the truck turned off the light and it resumed with the same readings as above. Do I start with swapping the ICP sensor? Can I test the HPOP a little more definitively? Just looking for guidance.
Extra info:the truck failed both cylinder contribution and KOER tests for unknown reasons. KOER test stopped and left the trucks idle at 1000 rpm.Tested fuel pressure last week, pre filter it is perfect at WOT and idle. Post filter it fluctuated at WOT, replaced filterInjectors rebuilt 2 years ago, at the same time I added FRX, Riffraff High volume fuel pickup (to eliminate in tank strainers and plastic foot), and a fuel strainer inline before the pump.
Butt-Head
Joined: Apr 2004
Posts: 9,448
Likes: 2,934
From: Reed Point, MT
485 PSI and 650-ish RPM is normal at hot idle. Nothing low about either value. The IPR is lower than specs though as it should be 9-12%, not <7% like yours is. However, since it's able to maintain the hot idle pressure of 485, I'd look elsewhere.
Tuned
Joined: Oct 2020
Posts: 418
Likes: 178
From: Piedmont of N.C.
Nope. I think what Cletus is saying is your hpop is probably fine with 485 psi at idle and is not causing what you are experiencing. My hot idle reading is always under 500 psi.
Thread
Thread Starter
Forum
Replies
Last Post
mikethejoat
1987 - 1996 F150 & Larger F-Series Trucks
4
Feb 12, 2023 08:58 AM
BigJake34452
1999 - 2003 7.3L Power Stroke Diesel
6
Nov 2, 2009 08:20 PM
