Vacuum Leaks-type 44 TQ

[Doyt W. Echelberger]

Hope you took off the Michelin-Man hose and flexed it, looking for cracks.
And the lower end of the crankcase vent hose will probably need replacement 
every 4-5 years, as will the multi-branched hose to the ISV. The hose from 
the lower section of the wastegate tends to harden and crumble and get 
sucked into the engine, leaving an empty fabric shell that only acts as a 
filter to keep out moths and crawling insects. And there is a maze of 
smaller diameter hoses at the back of the valve cover that link with at 
least 5 places and maybe more. They get cracked under the circle clamps, 
where you can't see. Check the several hoses to and from the wastegate 
frequency valve along their entire length and at each end.

Doyt

 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
At 12:41 AM 12/17/00 -0600, you wrote:
>Can anyone tell me where the most common vac-leaks are on this car?  I
>replaced the O2 sensor, valve cover gasket (rubber type), T-shaped hose
>atop the valve cover, fixed the air intake wiring(F/C 2322), and cleaned
>the ISV,  yet I still only get a 1.1 boost reading.  I have not replace
>the Cat. Conv. yet, but that's next.  Is there anything else that can
>give a low boost reading?  There must be a leak somewhere.  Please, any
>help is much appreciated.
>
>Houston