Its been acting crazy. When I drive for a while it goes up all the way like its over heating but its not. I checked all fuses n got a new mpfi harness done n a new temperature fan sensor. What else should I check? Its been doing for a yr but its getting worst making my fan go on the whole time plus I checked my hoses there routed correctly.

 

Check your grounds ese

 

Well the ecu n dizzy ones r new since its a new harness but the others seem fine to me. U know of a shop that can check it out for me locally? Even sometimes the gas one gets a lil fishy but rare.

 

Take.off the.battery ground cable.and.clean up the contact.points

Also the.valve cover one

And thermostat housing.one

Abd naw brah don't know any

 

Also, double check to make sure you have no air in the coolant system.

 

I had that issue on my 91 sedan, I had a coolant leak on the collant resevoir, I fixed it and it kept on, I blow my waterpu.mp after a 90 minute straight, 70mph drive, I got it fixed, and it kept doing that to me, in my case it was my head gasket that had a small crack and it was leaking coolant into the engine. Check your compression to be safe, but then again my case was just a bad experience cuz then engine would get warmer than normal, in my case it was slightly overheating,