Occasional Overheating

5thgen · Post by **5thgen** » Fri Mar 13, 2009 4:50 pm

Does it ever heat up on the highway?

gsrauto98 · Post by **gsrauto98** » Fri Mar 13, 2009 5:20 pm

5thgen;170658 wrote:Does it ever heat up on the highway?

not at all, just when at idle.

5thgen · Post by **5thgen** » Fri Mar 13, 2009 5:54 pm

I think it points to a fan.

If you had air pockets it should still overheat on the highway. I had some pockets and after about 15-20 minutes of highway driving the temp needle would rise.

If you are sitting still you have zero airflow if your fan is not working. It could also be the thermo switch itself. Does this car have a/c and a full length radiator?

gsrauto98 · Post by **gsrauto98** » Fri Mar 13, 2009 6:45 pm

It does not have ac and its a half size radiator.

delslo · Post by **delslo** » Fri Mar 13, 2009 11:54 pm

im voting fan isnt working or thermo as well

gsrauto98 · Post by **gsrauto98** » Sat Mar 14, 2009 2:32 am

Why would the temp go back down though if im at a stop and rev it to 2000rpms if it was the fan???

5thgen · Post by **5thgen** » Sat Mar 14, 2009 5:15 am

If revving at idle cools it down...maybe it is possible the bearings in the water pump are going....and doesn't spin as much until you put some rpm to it.

Diagnose some things and check things off a list of possible and not possible. Your thermostat (stock) will start to open around 165-175 (your lower hose usually warms up then), and your fan should kick on at about 194 degrees.

Check your fan.....rule it out.

gsrauto98 · Post by **gsrauto98** » Sat Mar 14, 2009 3:18 pm

I will just do a run through on everything and get back to you guys. And my water pump is only about 5 months old. Thanks for the suggestions and all the help.

Fresh · Post by **Fresh** » Tue Apr 21, 2009 6:13 pm

My car does the same thing but sometimes when im on the highway it will get alittle hotter when i have the heat turned on or the defrost on.