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I checked this forum and found old posts on the Errror Code 332 issue. I also had the code and my "check engine" light was on. Had a guy check it and he blew me off and said don't worry about it. Well, I just failed my emissions test while trying to get a sticker. After reading this forum, I had a friend test the code and he found the Error Code 332. The short story is that the "coffee can" FORD used to build up the vacuum had several rust holes. We called FORD and they don't make it anymore. We call various Auto Parts stores and they didn't have it. So I took a can opener, sliced off the top of the can (which has the connections on it), got a coffee can, fastened the top of the old part to the new coffee can (solder). emersed it in water to check for leaks, painted it black, tie wrapped it to the fender and BINGO, no more Error Code 332. Drove the truck back to the inspection station and passed with flying colors. REALLY, A COFFEE CAN TO ALLOW ME TO USE MY TRUCK. Great engineering FORD. Ever hear of PLASTIC or RUBBER. Thanks to this forum for pointing me in the right direction.
I would have gone to the junk yard and stripped a large plastic one off of a chevy van's heater controls. it's about the same size volume, and it should last a bit longer.
IF you open the hood on the chevy van you can;t miss it. It's the huge sphere with two line going to it. It's usually mounted right up top so it's easy to get to. You have to remove the darned thing to change the spark plugs.....
The newer(mid '90's) Ford trucks used a plastic vacuum resovoir as well, that's what I got when my coffee can rusted out.. no need to use dirty GM parts in your ford.
I also had problems with Ford's tin can vacuum reservoir on a 1980 Monarch. Transmission would act up every time it was driven in the rain. After several weeks of troubleshooting, i found water in the hose at the vacuum modulator. The car had never been driven through standing water though. I traced it to the tin can reservoir hidden inside the fender. The can sits upright and traps water on the top of the can. The water had rusted a hole in the top of the can next to where the vacuuum line attaches, allowing water into the line to the vacuum modulator on the transmission.
I swapped it out with a large fruit juice can and put a "for sale" sign on it!