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I mentioned this once before. The shaking only happens for very short time. That's why it is so difficult to pinpoint the exact source of the whole problem. I had noticed that it shakes for less than a second, just right before CEL light went out. Once it shakes, then it stopped as CEL light goes out. What I mean is that CEL light was on from the point that I started the engine until the engine shakes. CEL didn't go back on again after that. The engine had shaked maybe one or twice during I am driving on the road. That's what leads to my suspecision of high pressure oil pump or ICP but I won't know which one for sure. That's why I posted the pressure output readings. So that gives clues to the problem. Seem that it is normal because I don't know the normal range of operation from HPOP. Nobody said "ohh that is too low" or "that is normal, it is something else."
I had replaced the burnt wirings inside the valve covers. I had seen how the CEL behaves with that problem. The CEL fllicks on/off and engine shakes much worse.
I know that CEL does give out the codes. The ford dealership's service guy said that the paper shows no codes but just quoted "ICP Circuit Malfunction" and it stated that ICP sensor and ICP connector are recommended to be replaced. I have OBDII tool but it can't pull the codes from my truck because I was told that my truck doesn't have "true OBDII" system and the computer has to be reprogrammed to be full OBDII. I don't know what the heck they are talking about because I have OBDII socket under the dashboard on passenger side. Also, I was told to check other socket inside the engine area, near brake booster. I couldn't find that one at all. Nada. You are welcome to come to find that one. It isn't there at all. Yeah, it bothers me a lot that I couldn't find the solution.
So far, it seems that I have to shell out 200 bucks for ICP and find the answer. Problem - I can't return the ICP part if I opened the package. If ICP sensor isn't the problem, 200 bucks went down the toilet, which I don't want to do. I would like to save some money by go to Longhorn International on Airport Blvd but I don't have car to drive out there.
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Bluenavigator
'95 F-350 XLT PSD, CC, 2WD, Garrett Turbo AR 1.1, 5spd ZF tranny, LUK, 4.10 Limited Slip, just added Dual Arm Tenisoner. Just added my ol' vacuum gauge to monitor my vacuum pump.
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