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post #1 of 13 Old 08-29-2006, 6:23 PM Thread Starter
 
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engine running hot

I have a '02 954 and my fan motor went out and the engine ran hot.I replaced the fan motor and it still runs hot.Any idea what I might need to check?
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post #2 of 13 Old 08-29-2006, 6:42 PM
 
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Re: engine running hot

Did it dump coolant? If so, it may be low or have some air trapped in it somewhere.

Did you reconnect the fan? Not trying to make you sound stupid. When I swapped my exhaust, I forgot to reconnect the fan and got stuck in traffic on my next ride. Needless to say, it made for some fun roadside troubleshooting.
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post #3 of 13 Old 08-29-2006, 6:47 PM Thread Starter
 
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Re: engine running hot

Yea in dumped coolant through the overflow.I did did recheck the fan to see if it was coming on and it is.If I'm on the highway it does not get but as soon as I exit and stop at a red light, it goes up.
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post #4 of 13 Old 08-29-2006, 6:51 PM
 
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Re: engine running hot

Sound like an air pocket or low coolant for the first try.

Must obey the sheep dog
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post #5 of 13 Old 08-29-2006, 6:59 PM Thread Starter
 
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Re: engine running hot

I hope it is something as simple as a air pocket.Any1 have a idea on how to get the air out?Thanks!
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post #6 of 13 Old 08-29-2006, 7:00 PM
 
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Re: engine running hot

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Originally Posted by shonjuan View Post
Yea in dumped coolant through the overflow.I did did recheck the fan to see if it was coming on and it is.If I'm on the highway it does not get but as soon as I exit and stop at a red light, it goes up.
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Originally Posted by sheepofblue View Post
Sound like an air pocket or low coolant for the first try.
Yep. If it dumped, it's low. Top it off, burp it to get rid of the air in the system and it all will be right with the world again.

The reason it's not running hot on the highway is due to the extra airflow over the radiator and engine. As soon as you slow down or stop, you lose the airflow and its cooling effects.
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post #7 of 13 Old 08-29-2006, 7:06 PM Thread Starter
 
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Re: engine running hot

Thanks for the info, I thought I topped it off but I guess I didnt.I'll try again.
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post #8 of 13 Old 08-29-2006, 7:06 PM
 
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Re: engine running hot

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Originally Posted by shonjuan View Post
I hope it is something as simple as a air pocket.Any1 have a idea on how to get the air out?Thanks!
Pull your panel off, pop the radiator cap off. Top off the fluid to the bottom of the neck, just below the hose to the overflow bottle.

Start the engine. Give it a couple of quick short twists of the throttle. If the level goes down, top it off and do it again. Put the radiator cap back on. Take if for a spin to get it up to operating temp. Shut it down [edit: let it cool down a bit] and pop the cap again to check the level. If it went down again, top it off to the bottom of the neck again.

Start it back up and give it a couple of quick twists. If the level goes down again, repeat all the above.

Last edited by seamus; 11-19-2006 at 9:34 PM. Reason: edited to correct procedure for future use.
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post #9 of 13 Old 08-29-2006, 7:08 PM
 
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Re: engine running hot

Quote:
Originally Posted by seamus View Post
Pull your panel off, pop the radiator cap off. Top off the fluid to the bottom of the neck, just below the hose to the overflow bottle.

Start the engine. Give it a couple of quick short twists of the throttle. If the level goes down, top it off and do it again. Put the radiator cap back on. Take if for a spin to get it up to operating temp. Shut it down, let it cool and pop the cap again to check the level. If it went down again, top it off to the bottom of the neck again.

Start it back up and give it a couple of quick twists. If the level goes down again, repeat all the above.

Must obey the sheep dog
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post #10 of 13 Old 08-29-2006, 7:15 PM
 
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Re: engine running hot

That might actually be my first useful post.
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post #11 of 13 Old 08-29-2006, 7:43 PM
 
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Re: engine running hot

Propylene Glycol, all you need to know.
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post #12 of 13 Old 08-29-2006, 10:17 PM
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Re: engine running hot

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Originally Posted by seamus View Post
Take if for a spin to get it up to operating temp. Shut it down and pop the cap again to check the level.
Let it cool down some first before opening the cap...

"It is better to post and risk reposting than to have never posted at all."




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post #13 of 13 Old 08-30-2006, 2:42 AM Thread Starter
 
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Re: engine running hot

Yup that was excatly the problem.Whew I'm glad it wasent anything major.Thanks again for the info.
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