1998 grand prix se 3100 v6

**stressingcars408** · 06-15-2013

Hi everyone I got a 98 gramd prix and it got hot a couple days ago n the thermostat read right before the red I got home right when it happened. A couple hours later I filled the radiator with coolant and water I drove about 6 miles and saw it leaking out coolant so I'm guna replace the radiator. Just yesterday I saw my oil all cream color so I'm guessing its my head gasket .anyone can help me??? I just did the oil change right before it all happend. And I just bought this car 2 weeks ago. Please help if you can.

**Slick2500** · 06-15-2013

I would check your lower intake gaskets first, they are more prone to going out before the head gaskets on the 3100.

**dsmuts** · 06-16-2013

Lower intake manifold gasket for sure. Have fun changing it lol

**stressingcars408** · 06-16-2013

So I would need a lower intake manifold gasket. So when I replace all the those gaskets no more cream oil? And its leaking coolant from not the oil pan but right back of the oil pan. Any help with this?

**dsmuts** · 06-16-2013

You need the metal lower intake manifold gasket. Once replaced the coolant and oil shouldn't mix anymore but the damage could be done. I did it on my grandma's car and her motor knocked for at least 15 min before it quit and ran fine for about a month until she got t boned in it.

**stressingcars408** · 06-16-2013

What about the leak from under the car not the oil pan but another pan ? Is that just the lower intake manifold gasket causing that to leak?

**dsmuts** · 06-16-2013

Lim will leak out the sides as well

**stressingcars408** · 06-16-2013

Do I have to remove the valve while replacing the gaskets?

**dsmuts** · 06-16-2013

valves no. valve covers yes.

**stressingcars408** · 06-16-2013

Is this guna be difficult to replace? And to you know the torque specs or know where I can get them ?

**dsmuts** · 06-16-2013

It's not fun to do. If you never work in cars expect a weekend to do it. Specs are all over the web just Google it and they will pop up

**stressingcars408** · 06-17-2013

I watched a video on how to do it and it was saying something about moving the dropsticks and setting the valves. Did you do that?

**dsmuts** · 06-17-2013

No you just have to loosen the rocker and move the pushrods and then pull the gasket. I leave the pushrods I'm place because they are different lengths so they don't get mixed up

**BillBoost37** · 06-17-2013

On a 3100 getting it hot is always a bad idea. Tough to say it's an HG or intakes, but I'd start with the intake and expect them to look shot. This is very common. Make sure you put in the metal gaskets. If using fel pro the last character of the part number will be a T.

**stressingcars408** · 06-17-2013

So ill remove or lossen them and take old ones out clean area and drop new felpros in? And jus tighten the rockers. I cant find the torque specs for them. Would you happen to know? I'm guna be starting this on the weekend. Just need the most info I can. Thanks for the help too

**dsmuts** · 06-17-2013

I think it's 18 ft lbs

**stressingcars408** · 06-18-2013

Thank you . I got a question about the speedometer mine is ahead 10mph . Would I replace the speed sensor?

**dsmuts** · 06-18-2013

Not sure there

**stressingcars408** · 06-27-2013

I just finished the job. So I turned it on a little ruff. So then it wen to normal just a knocking noise before all this it made the noise on the warm up that's it but alil ruff idle was up and down but did not turn off

**dsmuts** · 06-27-2013

Rough idle is a vacuum leak. Did you change the oil? You'll probably have to do it twice.

Thread: 1998 grand prix se 3100 v6

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