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idle problem/vacuum

  1. L

    Engine Vibrates in Drive / Traffic / Idle

    Hi everyone. Long time member but first time poster. Here's the problem.... I had my radiator, thermostat housing, motor mounts, and transmission gasket replaced a few weeks ago. 3 days after I took the truck home from the shop, I noticed my truck having rough idle every time the engine...
  2. Z

    The idle is high in my 1990 Aerostar. I might have a vacuum leak.

    i have a 90 Aerostar that I am trying to go through smog testing. I was told that the NOtest was high and that the other gases they check were good. They told me that the idle was too high (1350rpm) and was probably due to a vacuum line and also the reason they couldn't complete the test. can...
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