Shaking
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The engine idles rough and shakes the truck to about 1300 rpm. 3500 miles on the oil and full, 5k on cps and 8k on fuel filter. No unusual smoke or EGT. No chip or programmer either. Any ideas?
Thanks, Les
Thanks, Les
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Originally Posted by cookie88
The first thing on the list in the service manual is to check for aerated oil. Do you have a means to check the HPOP pressure or voltage?
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From: West Columbia, SC
take the strainer off and check for debris or any contamination.He probably is talking about ICP voltage or IPR voltage. If you had a good scan tool u may can get the ICP readings from it.
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From: Cabot, Arkansas
Yep, I was talking about the ICP voltage, but I'm thinking now that it won't be neccessary to actually measure the pressure.
First change the oil to rule out an aeration problem.
If that doesn't fix it then try disconnecting the ICP sensor, if the idle smoothes out the ICP signal is at fault, if not, you may have some debris stuck in the IPR.
First change the oil to rule out an aeration problem.
If that doesn't fix it then try disconnecting the ICP sensor, if the idle smoothes out the ICP signal is at fault, if not, you may have some debris stuck in the IPR.
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Oil changed with no difference. Disconnected the ICP with no change. The only thing that happened was I got the SES light. I see 3 sensors on the hpop, 1 on top, 1 on the upper leftside and 1 on the lower leftside. What are they?
Thanks, Les
Thanks, Les
Last edited by powerstroker250; Jul 25, 2004 at 12:55 PM.
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Originally Posted by powerstroker250
Oil changed with no difference. Disconnected the ICP with no change. The only thing that happened was I got the SES light. I see 3 sensors on the hpop, 1 on top, 1 on the upper leftside and 1 on the lower leftside. What are they?
Thanks, Les
Thanks, Les
When you unplugged the ICP (drivers head) with the engine running you made the PCM default to a set oil pressure. Since the idle didn't change the ICP is working.