L36 Intake exploded - rebuild insight from experienced - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-24-2008, 06:21 PM   #11
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I just fixed my 96se with 173,000 on it. It'* worth it. Make sure you replace the LIM gaskets while your in there. Good Luck.
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Old 01-24-2008, 08:16 PM   #12
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Originally Posted by TallyGreenBonneville
Agreed. I am just trying to get a best guess as to what I will find on Saturday when I tear into it.
Likely damn little damage. In a way, it is fortunate that the manifold grenaded like that before trashing the throttle body.

Simple stuff will be get a shop vac, a small piece of tubing, and some duct tape. When you have the bits of the manifold off, carefully vac out the intake valley and all the runners to get any loose bits of plastic out (use the small tube and duct tape it to the end of the vac hose to get all the way down to the valves and pick up any pieces that went down the runners.)

Dump the oil and coolant and replace the manifold. Problem solved.
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Old 01-24-2008, 08:44 PM   #13
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Wow, you got sorta "lucky" there... And as stated above, definitely change the lower intake manifold gaskets while you're at it too. You're 90% there already.
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Old 02-02-2008, 06:47 PM   #14
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Default Got it back together but MIL light on P0302

The car cranked and had a vacuum leak that I tracked to the O-ring on the vacuum adapter for the brake boost / AC. Nows it runs pretty rough at low idle (1000rpm on stock tach) but no noticeable vac leak. It sounds much better if I run it up to 2000rpm. I still see that If I leave it at low idle it immediately throws a P0302 (misfire cylinder 2). I have also seen P0171 (engine lean). Often the MIL at low idle is a blinking MIL, to clarify the MIL shows up in about 20 - 30 seconds.

If i run it up 2000rpm it will not light up the MIL it will run for minutes or even a trip to the local Advance Auto to get new plugs and wires

Just to clarify I did the following on the "rebuild". Felpro lower manifold gaskets, Dorman UIM with provided O-rings used on the injectors, and a new MAP sensor. I also cleaned up most of the visible goo in the intake and TB. I avoided the MAF area though.

Note : I only have a cheap reader and not a scan tool.

Any thoughts where to go next.

Swap injectors or swap coils and see if the cylinder number for misfire moves?

Thanks in advance for the time
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