Throttle delay
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Throttle delay
After I replaced the Hpop I had a serious delay in the throttle. And when I pull up to s stop sign, the Icp pressure drops below 400 and the engine dies. Disconnected the ICP. No more throttle delay. Bought a new ICP. Put it in. Same issues. Someone told me it could be the Idle Validation Switch. But if that was the case. Why would the problem go away when I disconnected the ICP? The only time the CEL came on was when I disconnected the ICP. Is this a PCM problem? Or do I have a Faulty “new” ICP? The fuel pump and cam sensors are new too.
Last edited by Jeffpace30; Aug 19, 2019 at 09:54 AM. Reason: Need to add something.
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Joined: Apr 2016
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From: Bahstun
What year truck?
What style HPOP?
Did you take it our for a good run after to purge the air out?
Can you monitor IPR% duty at idle, 1k RPM and 2k RPM cold then check again hot.
make sure engine oil is not low
What style HPOP?
Did you take it our for a good run after to purge the air out?
Can you monitor IPR% duty at idle, 1k RPM and 2k RPM cold then check again hot.
make sure engine oil is not low
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