Since it is not the ICP, I would be leaning towards the HPOP. Is that the general area the whine could be coming from?

 

Did i mention that I didn't want to hear that? Yea, that's where it sounds like it is coming from, or at least as far as I can tell. I couldn't take my foot off of the gas while it was running, so I am not 100% sure. Is there anything else I should do to be absolutely sure?

 

Or check your hpop pressures some other way. There are several ways to check, but you arent going to have the correct specialty tools. Where are you located?

 

Forest, Got my truck back, $1800.00 HPOP and IPR

 

I am in Ramona California, in San Diego county.

 

matty169: In another thread that is running along very similar lines, you said the following: "Pull your IPR. With any luck the screen is pushed in to the ipr. I have seen this 3 times in the last 2 months. These folks were told they needed a hpop for $2500. Replaced the ipr, and all is still good on all 3 trucks. 1 3/8 is the size for the ipr, and its a bitch to get to. Remove ficm and bracket, injector harness for drivers side, back bolt of valve cover with the ground wire, and a skinny hand. But check your fuel pressure and filters first. Check your p.m.s". I am running this trucks first oil change to synthetic right now. I am thinking that pulling the IPR and checking the above is probably my next and last check before concluding that it is the HPOP. Also, in cranking the engine over I do not see the stock dash oil pressure gauge (above the fuel gauge) read anything.

OK, wait... correction on above... I just re-checked, and the oil pressure gauge does pop up after about 15 to 20 seconds of cranking, and goes about half way up it's travel range. OK, what next.

Bare with me folks, this appears to be "Mike gets to know his 6.0" month. So far so interesting but I'm learning. By the way, speaking of learning, is there a trick to getting the plug back into the ICP sensor once you unplug it ... like a light smear of oil on the end or something? Thanks!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

Mike - you have an email.

 

DO NOT put oil on your ipr harness. And dont bend the little pins in the sensor. It will only go on 1 way. And dont force it.

 

matty169 - no, ICP connector, not IPR sensor. I started out talking about IPR sensor, then asked a final question about plugging the ICP sensor connector back in to the ICP sensor (which I did not remove). I think I am going to pull the IPR sensor soon and inspect it, which was really my main question to you, but as a last thought I was asking if you or anyone had any advice on plugging the ICP sensor connector back in, which is currently hanging out, because I tried pulling it to see if the truck would run well with it unplugged, which it did not. Now I am having trouble getting it back in. It is this one that I was asking about a light smear of oil on the end of (just the projection out of the connector), or is the trick to just make sure it is going straight in, or do you have to replace it with a bit of force. Seems like I ran across someone else having a problem like this, but I have read through so many threads that it could be anywhere. Thanks ... I think we are getting closer.

 

make sure the clip is oriented properly to the sensor.. use a long pick to push the connector on.. unless you have fingers like ET, you'll struggle to get it together without a tool..

 

I would not put any oil on the ICP harness either. It should go straight in.

 

I'll try again then, and try to make sure it is straight. If only I could hold one of my eye ***** between two of my left fingers, while gently aligning the plug and pushing it in with my left thumb and fore finger, this would be much easier. I must have been mis-aligning it. Thanks!

 

the way the plug is molded, it'll straighten itself out as it's being inserted as long as you're pretty close.. it takes some force to get the clip over the steep retaining pin..

 

Thanks William, that's probably what I was having problems with. That and my arm was starting to get pretty sore rubbing against the transmission housing. Overall though, having removed the plug, but not the sensor from the bottom, it seems like the whole operation is probably easier from the bottom ... err ... unless you have large forearms, then I don't see how you could even get your hand up there to it. I probably have "average forearms, with a girth of about 12 1/4 inches around the fattest part, and it kind of hurt, but I could get my arm up and down out of there and work comfortably once I stared at it for a while and figured it out.

 

OK, well I didn't get time to even raise the hood last weekend, so I just got back to it today. I did get the ICP connector back in. Where I was having trouble was not with the clip on the side, it was with the orientation of the plug, I.E.: I didn't realize that it had to be rotated in the correct direction also, I had never looked into the end of the plug until today. I was laying under the car thinking "round plug, round hole, why this thing not push in?".

Next - I have a good load tester coming, it was suppose to be delivered on Friday, so naturally it will be here Monday. I will post back with the results.

Also, I removed the IPR sensor today. The screen on the end is deflected inward, but only maybe 1/32". Is that enough to conclude that it is bad???? Also, while the screen generally looked very clean, it did have two or three very small fragments of metal on it. While you could see them with the naked eye, they were almost too small to see that way, and I didn't really notice them until I looked at the screen under a magnifier light. Is this normal?? Particularly since, as I indicated above, I am running synthetic oil for the first time, which I've always understood may clean out the engine a bit. Or is any amount of what is clearly metal an indication that my HPOP may have, or may be committing suicide?? Should I change the IPR sensor, check the batteries and change them if necessary, then see if she runs, or assume the worst and change the HPOP while I already have so much off of the engine? Thanks again for the expertise and opinions!