IPR Slow at start?
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Mountain Pass
Joined: May 2010
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From: Central Ar
IPR Slow at start?
So durring startup either cold or hot the IPR is slow to show a demand. the engine will spin 3 revolutions maybe 4 before it starts to show a need for ICP pressure. once it does it springs to life. All readings are perfect once it starts. FICM voltages are on par with everything the gurus say it should be. Could it be a sync issue or am I looking for a problem that doesn't exist. Only codes are a #5 glow plug thats getting replaced tomorrow. its a 2006 6.0 with 166 on it. all original except the exhaust. Cleaned the EGR 40,000 miles ago but its original too.
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Mountain Pass
Joined: May 2010
Posts: 206
Likes: 0
From: Central Ar
While trying to figure this out I found a fuel leak from the fuel pressure spring cover area. R&R with blue spring upgrade and replaced the LH Glow plug harness due to a glow plug code. This didn't fix the issue but boy did it help the towing ability. What I have managed to narrow it down to is the Sync time of the camshaft sensor. I programed the SGII to read the FICM and Camshaft sensor. The FICM will sync then as soon as the cam sensor sync's it fires up. Is there a reason that you all know of that it could be slow to pick up. I figured it would either be bad or good. Not in between. The crank times are alway random. 1sec all the way to 5 but as soon as it sync's it fires. IPR and ICP pressures are good throughout all ranges. Any ideas?
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