help overheating

[zadam123]

My mechanic fixed my thermostat housing a few days ago cause it was leaking and now my car is overheating he also replace my thermostat. My car is not leaking now and has antifreeze and im not stuck in traffic. And my fan is working. Any ideas what is could be. evey 10 minutes i have to pull over to let it cool down

[jdm monkey]

bad thermostat (not opening)

[zadam123]

That's what I thought but mechanic do.t think so. Is there anyway to test that? I know changing it is a big job

[jdm monkey]

The only way to test it is to take the thermostat out let it sit in water until it boils and check if it opens.
Another possibility is a bad water pump.

[Grif]

Another possibility is a bad water pump.

I was thinking water pump as well, but the only time ie ever had one of those go bad (not in the VX) you knew it!! It made one hell of a noise.

[Marlin]

Another problem is the fan clutch. My fan still worked when it was running. The easiest way to check is to try and spin the fan with the truck off, it should not wiggle and be difficult to turn. If its easy to do it, or it wiggles, the clutch is bad.

[PK]

We can eliminate the fan clutch if the engine is still overheating while you are in free flowing traffic.
The air flow through the radiator eliminates the need for the fan.

Sounds like thermostat or water pump, or richard head mechanic left a rag or plug in one of the galleries while he was working on the engine.

Be careful or it will cost you a motor.

PK

[lasturbo]

Another problem is the fan clutch. My fan still worked when it was running. The easiest way to check is to try and spin the fan with the truck off, it should not wiggle and be difficult to turn. If its easy to do it, or it wiggles, the clutch is bad.

I agree with Marlin, it may be a fan clutch failure or very weak. You need this to pull the air through the radiator. Did you check it yet?? I know this because mine was starting to run higher than normal on the temp guage and when I replaced the fan clutch, fixed it!!

Here was my thread on the fan clutch help I asked for FYI:
http://www.vehicross.info/forums/sho...ght=fan+clutch

[zadam123]

I just checked the fan clutch and it doesn't wiggles an is not real easy to spin. So i don't blow out my motor what is the hottest i should let the temperature run before i pull over to let it cool off middle,3 quarters or up to the first line by the h? Also does the fan have two speeds ybecause it seems like it's spinning but not real real fast

[zadam123]

I was thinking water pump as well, but the only time ie ever had one of those go bad (not in the VX) you knew it!! It made one hell of a noise.

Thanks for the input.no noise was made just noticed the air conditioner was starting to blow out hot and look at that temperature and it was hott. Here's another question i have a 1 hour ride home would it be better for me to go a little faster or to drive slower to keep the temperatures down?

[rowhard]

just noticed the air conditioner was starting to blow out hot and look at that temperature and it was hot.

did this just happen once? what you describe here is the ac freezing up and that will cause overheating. If you were stuck in traffic and running the ac, that will happen

[zadam123]

happend a couple of times. if i keep it at aroud 50 mph i can last a half hr from start befor i have to pull over and let it cool down. at least thats what happend today with no traffic

[Grif]

Did a quick search here, seems if the engine is running lean it can cause overheating as well? Most reports indicate a throwing the CEL for a lean condition as well. Is the check engine light on?

If the lean condition is the cause, then some reports indicate cleaning the MAF sensor will rectify the issue.

I dunno, just throwing that out.

[zadam123]

Also how hard is it take out the thermostat. does anyone have a step by step. i heard it's a big job

[zadam123]

Does anyone know how much a head gasket should see if that is the problem?.
I think the oil looks fine As far as bubbles are you talking about the radiator Because when i took top off the rad. bubbles were coming up