That torque is right for the upper intake manifold bolts, but hopefully your guess at what you tightened the lower ones is wrong, as that is over 3x too tight, the lower intake manifold bolts should be torqued to 11 ft lbs.

Hi all,

I have recently rebuilt my uim and LIM. I may have done something wrong so I appriciate any advice.

Full disclosure, the PO had put in stop leak.

After repalcing the UIM and LIM I ran water through the system several times and ran the engine w/o the thermostat to flush everyhting out.

I drained and added 2 gallons of coolant

I took the car for a spin, and she'* overheating to the point the idiot light comes on.

Taking a sample of the coolant, it should have been near the middle shows the needle pegged to the top. Runs normal temperature w/o the cap on and noticing the coolant is "boiling" even when the temperature reads 190-200 and the fans kick on.

It'* like there'* an area in the engine that still has 100% water, wand is boiling over, causing steam and airpockets. That'* my only explanation why the coolant is reading so high.

Any advice?

I went ahead and moved your new post to this thread, since you already had a thread going about the coolant.

By the way, did you ever find out what you actually torqued the LIM bolts to?
I ask because you never replied to my last post here.

What kind of coolant are you using to top off with? 50/50 or straight coolant?

Thanks William, I couldn't find that post to update.

My apologies, I'll get that number for you tonight. I used what'* in alldata...

Mike, I'm using the green stuff 100% coolant. I don't believe in paying extra for water.

are you mixing water with the concentrate?

I am.

If I did not would it cause it to boil over??? curious....

dont know really, it would over heat. the water is what cools the engine, the coolant is to stop the water from freezing. and to raise the boiling point of water somewhat. most of that is the pressure cap

I think with him putting straight coolant in, and then putting water in is causing it to dilute too much with the existing water in the block.

When you say "Taking a sample of the coolant, it should have been near the middle shows the needle pegged to the top." do you mean you tested it with an antifreeze hydrometer?
Like this one?

If so do you mean it pegged all the way up where it says freezing point on the one in the picture?
If that is the case I am not sure why it would be boiling so easily, since it would mean you have a higher ratio of coolant to water, which should increase the boiling point a good bit past normal.
Can you pressure test your coolant system?