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post #1 of 3 (permalink) Old 09-29-04, 04:51 AM Thread Starter
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Air con vacuum dramas

I have an EB 4 speed auto and after doing the CFI to MPI conversion I have had some problems with the air conditioner vents closing when the engine is under load and a vacuum noise (hiss) coming from the air con temperature slider knob when set to full cool position. I also have a question about the air con vacuum hoses. Can someone tell me where the vacuum hoses connect up to. The are 2 black and one green vacuum lines coming out of the firewall and into the engine bay.Help please.
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post #2 of 3 (permalink) Old 10-01-04, 02:47 AM Thread Starter
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Re: Air con vacuum dramas

Can someone please look under the bonnet of their 3.9 MPI and tell me where the two black and 1 green air con. vacuum lines go, pretty please? :)
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post #3 of 3 (permalink) Old 02-01-05, 04:54 AM
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Re: Air con vacuum dramas

i had the same problem when i had the CFI engine, hissing sound and the vents directing to windows when you plant your foot. all i did was take the climate control box (next to the instruments) thing out and played around with the vacuum hoses until it stopped making the noise. i think i just plugged up one of the vacuum hoses with blu-tack on the right side of it... can't remember which. fixed it right up and worked perfectly ever since. :)
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