my '95 mark is already in storage for the winter, but i start it every two weeks just to keep everything moving. today when i started it it idles real funny. the idle is really rough like it has a huge cam in it. then when i give it some gas it idles fine for about a minute, then kicks down and idles really rough again. anybody got any thoughts? truly appreciated.
idle?
- Thread starter cfischr
- Start date
MYTURN
Active LVC Member
my 93 does that too but only when it is cold and for a minute.i did have iac problem but i changed it to a used mustang 5.0.it fixed my 2000rpm idle but mabe it is still finiky.-is that a word. maybe it is a cold sensor or something
Hey cfischr! Ever think your rough idle and hard brakes could be related? i.e. a vacuum leak? When my idle went crazy my brakes also became hard. Turned out to be a vacuum leak between the m/cyl and brake booster. Now, im not saying this is definitely your trouble but certainly something worth investigating.
MYTURN
Active LVC Member
good call blue on blue.
fossten
Dedicated LVC Member
Yep I had the exact same problem, exact same solution, 4 bucks at autozone and I was green.
BigWaveDave
Active LVC Member
well I had the same problem and I fixed it today.Crank your engine,get under the hood and listen for any hissing noise. Mine wound up being that t-shaped rubber vacumn connection at the back of the intake manifold.Basically it had a big a** hole in it and I had a major vacume leak.I replaced the gen 1 part with a gen 2--it seemed to be a lot better made.good luck I hope this helps
Markviiiedrea
Speed Bump
IAC here, and I also had a bad idle and I couldent do a burnout, it turned out to be a vacume leak. I had to fidle with the brake boost when I did my upper control arms and knocked something loose.
