98 grand prix

[andesmint]

your video is listed as private. double check all of the vacuum hoses, make double sure you didn't forget any and check for cracks in the hoses and or vacuum leaks. this can be done with a smoke machine... i've also seen people use a cigar haha. just blow smoke where the hoses hook up and see if smoke gets sucked in. I had a leak on my break booster vac hose after i rebuilt the top end of my motor and it did EXACTLY what you are describing

 

[sugaryuk]

x2 on check for vacuum leak, if it's a big enough leak to kill your motor then you should be able to hear it when you're under the hood. Start with all the hoses and then all around the intake manifold.

 

[Flip97GTP]

I was thinking about doing my headgaskets because I'm going to be doing the LIM gaskets soon. So, I was thinking, if I'm already all the way down there I might as well do the head gaskets but I change my mind because of what I was told about the head gaskets on the 3800. They are bullet proof...Lol.

Anyways, I had a similar problem on a 3100 Monte Carlo I had. I replaced the head gaskets myself. When I finished I had the same problems.

It ended up being the fuel pump was bad.

 

[hartc26]

Turned out it was my map sensor. Now its boiling my coolant and there is a leak from the front drivers side. Still has pressure when I squeeze the hoses and no more cones out. Could my reservoir have melted or something from the coolant getting so hot?

 

[SnowTh1ef]

Probably air in the system, shouldn't have melted anything... coolant res is on the passenger side anyways. Where exactly is it coming from on the drivers side? Near the throttle body?

 

[hartc26]

Meant the over fill tank on the drivers side. . Its leaking from under the over fill tank

 

[hartc26]

We bled all the air out too

 

[SnowTh1ef]

Coolant won't boil if all the air is out and theres no leak and the rad cap is good and put on. Check hoses and everything around it, You won't hurt that plastic stuff until much hotter temps.