Sluggish In Hot Weather

[Eraj]

Hey guys,

As the heading pretty much spells out, my car is really sluggish when the temperature outside is warm, even without touching the A/C. On cooler days the performance is much much better. I know this should be the case with colder/denser air etc, but my concern is that the difference is really big. Could this be some kinda sensor or something of that nature? Any replies appreciated.

[wulley1]

I've had my car do that too, but only when moving really slowly, and stop once I got going faster than 45. I noticed it more on hot & humid days.


No idea what caused it though.

[Kevin325i]

What type of gas are you using?

[wulley1]

89 usually, 91 if the price is good.

[Kevin325i]

There's your reason. My car runs like crap if I put anything but mobil 93 in.

[Eraj]

Originally posted by Kevin325i@Sep 29 2004, 08:12 PM
There's your reason. My car runs like crap if I put anything but mobil 93 in.

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AAAAAAAAAAAAAAAAAGHHHHHH!!!!

Usually go for 89. I tried 4 tankfulls of ultramar 94 with no change. It's got to be something else.

thanks.

[Dinan 95]

Hey I know this can't be it, but this may spark a thought in someone.
It sounds like what I get in my camaro
Vapor lock, I don't know if its possible on a Fuel Injected car though.
It pretty much is the density of the air and the heat make detonation slow and Vapor builds up to the point that it won't start or what it runs like CRAP.

[wulley1]

an interesting thought.



I've tried running 89,91,93, and even 94. Never noticed any difference. I don't remember what I was using for gas when the car acted that way.