Re: cracked exhaust manifold on 232

[farna@xxxxxxx]

Jay, it should idle around 700 rpm in drive. If the idle is to low in drive you'll get the results you have now. My 4.6L EFI six requires 650-700 rpm to idle smooth in drive. The stick shift computer I'm using wants to idle it at 600 rpm. The engine is rough and "lopey" at that speed though. I have a vacuum gauge, and it's all over the place at the 600 rpm idle. If I rest my foot on the gas and get the idle up to 650-700 the vac gauge settles down along with the smoothness of the engine. 

Frank Swygert - Dover, DE

On April 12, 2005 Jay Ciampi wrote:

> Boy, I changed my maniufold yesterday on my American and the darn thing
> about fell apart when I unbolted it from the block. It had all kinds of
> cracks, some hair-line and some quite wide and long. Car sounds a lot
> quieter now but doesn;t idle any smoother.
> 
> When I set the idle in Park at a rather fast 700 rpm, when i put it in Drive
> and the engine slows down, it almost gets loping and rough. I can't seem to
> get a "compromise" setting that will be fairly smooth in Drive and still not
> jump into gear when I take it out of Park and put it in Drive. Any ideas
> what I might try with this situation?
> 
> 
> Jay
> Lake Placid, FL.


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