Hot Problem

[prometherion]

Hey guys,well its summer and means my car is screwing up again. I got a 98 zx2 auto. and winter it works fine. When it comes to summer and temperature is hot, after maybe 30 minutes of driving my car starts having problems to shift and it has no guts. Im really wondering what it is. It goes from when I give it a lot of gas then with time is just gets worst. My transmission was rebuilt about a year ago, I got 217 kliks on my car. Dont really have money to start changing random stuff. A mecanic told me it was my Throttle Position Sensor. If anyone has got a clue what could be wrong, please let me know, thanks.

[Texas Tracer]

Sounds like a cooling issue. Check the obvious like radiator, t-stat maybe water pump.

[mechtech]

I can't tell if you are talking about the cooling system, engine mechanical, programming, or the transmission.

[prometherion]

Yah the water pump has been changed, the tranny was rebuilt about a year ago and radiator is fine doesnt leak and its the level is exactly where its suppose to be. One thing that makes it worst is when I turn on my A/C, then it seems to get worst faster. Any chance its only a sensor not functioning properly?

[J_Mob]

Flush your cooling system. Check your fans (are they turning on when they are supposed too). Check the radiator and condensor for blockage (bugs/dirt) and too many bent fins.

Other than the obvious, which I listed some of above......I can't think of anything other than head or block damage which would cause overheating like that. Maybe the water pump is incorrectly installed or bad?

[ZX2Fast]

The cooling system should be flushed every two years. The ATX should have an auxillary transmission cooler installed the day you buy it.

[prometherion]

Water pump got done same time as timing belt, bout 17ks ago but the problems started before that. I got a transmission oil cooler too not long after I bought the car. So ill flush my cooling system & see what happens.