I know the csvt's secondaries open at 3400 under wot and at 3800 when less then wot. No matter if i am 50% or 100% they always open at 3800. Is it the pcm that tells the imrc when to open? Maybe a newer pcm flash would help it, if that were the issue. Also a couple times my secondaries have stopped opening and each time i would pull over shut the car off, pop the hood and pull off the plug to the imrc and plug it back in and it would work again. So maybe my imrc is taking a shit. Thanks.
Secondaries
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Your IMRC might be taking a shit like you said. Have you ever cleaned the manifolds out? You might have so much carbon buildup, that they're sticking. I'd take off the plastic IMRC cover if you haven't already. I'd try cleaning the manifold though anyway, and I mean taking them off and scrubbing them.
Mark
Mark
Yes I just recently cleaned the intake manifolds and replaced the gaskets. I also have already removed the imrc cover, did that as soon as I got the car.
i just put a new IMRC box on my car and they only open at 3800 no matter what i do. i later heard that they are probably opening, and you just cant feel it unless your at or near WOT. /shrug
WOT for me still happens at 3800. A buddy of mine had a 1998.5 E1 and you could see his open by 3500. My car is an E0 so I wonder if there were any pcm or ecu software updates?
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You could possibly have a TPS voltage problem, where your computer isn't recognizing WOT. Just a thought, as 3800rpms is when they open when below WOT. WOT on SVT's is 3200rpms, and I believe 3400 or 3500rpms on non-SVT's.
Mark
Mark
Yah I was suspecting that too. Ill hook it up to the MODIS at work and that will tell me if its reading WOT. BTW what was the price of a new IMRC?
I believe it's in the $120 range. I could be off, because I haven't priced one out in almost 2 years. Even then, I was given a discount price. I do know that they aren't cheap.
Mark
Mark
Checked the TPS, its getting 4.78v at WOT. A ford technician told me thats right where its supposed to be. Also the IMRC voltage drops to 0.88v and sometimes 1.1v when open. Is there supposed to be variance in that or that maybe it crapping out.
IMRC with cable is 270 retail with markup......if you go through tousley parts depot (steve) you can get it for about 130 after tax. there markup on electronic stuff is insane..... i checked the price at forest lake ford and they were like 249 before tax.
Pretty pricey lil unit. Thanks for the info.
The car read 4.78v at wot.
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