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I am about to do this on my 98...
Potential dumb question: Did you need to drain the coolant before pulling the manifold?
Thanks,
Fred
No sir, but I did not remove the throttle body, which has coolant lines hooked up to it. I unbolted it from the intake and left it hang. The intake has no water passages.
Not a hard job, just be caseful of the brittle PVC and EVAP lines. They snap like 10 year old crackers.
Something to consider---- when I did my ops it was recommended by Bill C that I put some high temp silicone around the knock sensors to keep oil and dirt from entering from around the seals..
Replace the pads under the Intake. They should cover the knock sensors to keep dirt out.
Yes, will do. I'll never have water in the there since I don't drive in the rain but I do want to make sure no oil leeches down there if I get a leak. Thanks for the heads up.
So while I was in the process of cleaning things, I decided to paint the coil brackets. I lucked out and found some engine paint at the pep boys that is close to MY color.
I'm not sure why I did it. But let me know your thoughts. Good or bad.
I've seen a YouTube video of a guy who managed to replace that pesky sensor without removing the intake. Mine has not worked for a while, but the last thing I want to do is to remove the intake to get at it.
Can this thing be reached without taking off the intake?
I've seen a YouTube video of a guy who managed to replace that pesky sensor without removing the intake. Mine has not worked for a while, but the last thing I want to do is to remove the intake to get at it.
Can this thing be reached without taking off the intake?
I've seen that video. I can't imagine doing it without intake removal. There is no room at all. I think getting the wire connector on and off would be the hardest thing. I'd rather pop the intake off. It's not hard.
I never even thought of painting the coil brackets.. Looks really Nice !!!
I did the valley cover and the knock sensors when I did mine last year..
Mine is a 2000 too.. I did the LS6 intake manifold upgrade , you know since i was in there
I forgot, I did a new cam position sensor too...
My crank sensor went bad a couple years ago, So I did it as PM.. Also, another
place to leak oil as it just has an O ring on it that was 17 years old
Last edited by foggy; Mar 21, 2018 at 12:37 AM.
Reason: add info
Well, I got it back together this morning. It runs better than ever. I'm guessing there was probably some vacuum leakage in the intake and I did find a PVC elbow that was broken. A few observations for anyone doing this job. I determined it was impossible to attach the rear vacuum line under the maf sensor. If you have a trick, please let us know. I bought a 45 degree elbow and about 4 inches of vacuum line and extended the whole thing. This allowed me to connect it and put the intake back on. Time will tell if it causes a problem. The EVAP tubing is extremely brittle. Be very careful removing the lines. I broke one removing it. I have to believe the PVC valve is an often overlooked piece. It's well hidden. Mine was awful. It wasn't completely stuck, but it hadn't been replaced in years.
The biggest plus and now issue is my oil pressure gauge works. The bad news is, I'm only getting around 20 and as low as 17 lbs at hot idle. It does go to around 30-35 when driving. I plan on swapping the cam next winter and I will do an oil pump at that time. I hope that raises the pressure a little.
While intimidating to look at, it is not a hard job at all. You can do the whole thing in a day. I took my time and replaced a few other things while in there.