Fan

[daught]

Is there any way to stop the fan from running when the engine is running? I am trying to find an exhaust leak and the fan is really throwing me off.

 

[Dragk913]

You could just take the fan off. The hub would still be turning but you would probably have less noise.

 

[iwannadie]

Use a piece of heater hose(2ft long or so), hold it to your year and move it around. It really helps to find a leak that way, at least for me.

 

[AF1JZ]

I wouldn't try to "hold back" the fan while it is spinning. It is a clutch fan and might do some damage.

Like the other said, take it off and put the nuts back on the pulley or use some hose to listen.

 

[daught]

Thanks for the sugestions. I was just curious if there is any simpler way to disable clutch fans.
I am really going nuts here. Something gets me "high"in my supra. I just cant find what it is. Today I stuck a sock in my exhaust(to raise pressure) and with a hose I was unable to find anything. I also put a carbon monoxide detector in my car and it does not beep. What else could get me "high"? Usually it hapens on the highway. I sometimes notice a strong exhaust odor when I deaccelerate.

 

[AJ'S 88NA]

You could have a leak in the rear deck area and the fumes are comming in. Did you check out under the car to see if there are any leaks in the exhaust pipes?

 

[daught]

I have just redone my rear deck. There are no holes there. I was under my car checking inch by inch from the exhaust manifold to the exhaust tip and there was no leak.
I just did some tests. That damn smell comes in when I drop from anything above 4k RPM to below 3k RPM at highway speeds. Here is the WIERD part. It is most noticeable when I have my window open. I am clueless, "high" and very frustrated....
Could it be something other than an exhaust leak?

 

[AJ'S 88NA]

Did you check around the EGR and the EGR cooler on the back of the head? Those also have exhaust running thru them.

 

[ill Z]

Have you checked all the exhaust connections from your manifold back? A friend of mine lost a bolt once in his Evo VIII, for the down pipe. His car would get you higher than astronout feces.