Re: Engine Noise

From: Jeff Lee (
Date: Tue Jun 02 1998 - 15:35:12 EDT

> Brian Blater wrote:
> I noticed a problem a couple of weeks ago when I first used the air
> conditioner this year. Before I turned the air on the engine sounded
> great. After turning the air on, It started making a loud "roar" when
> giving it the gas from a dead start or having to really give it the
> gas (like when you first start it up in the morning and the engine
> hasn't warmed up yet). This even continued for a while after turning
> the air off. Well, yesterday I used the air again and the same thing
> happened. However, this time I can't seem to get the engine back to
> "normal". This is now about 24 hours later.
> Any ideas what is going on? I can't think of a better explaination of
> what the engine is doing other than "roar." The truck is a 96 4x4 SLT
> 5.2l CC. Any ideas will be greately appreciated.
> Brian
> 96 Dakota 4x4 V8 SLT CC

Sounds like the fan clutch engaging because the engine temp is up due to
the AC condenser dumping all that heat through the radiator. This
happens to me occasionally if I'm sitting in traffic - I go to give gas
to accelerate and ROOOAARRR! The fan usually quiets down after I get
moving and the engine cools down a bit.

If your fan is still making the roaring sound - ie. it never seems to
return to normal, the fan clutch may be stuck engaged. The fan should be
able to spin freely with the engine off.

98 rc v8 5spd 3.55sg flares fipk

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