The car behaves fine for a while, but starts loping and missing at low speed like it has a bad vacuum leak. Seems to only do it after it's warmed up. Any ideas, it's driving me nuts.
Intermittant vacuum leak?
- Thread starter Mrgreen94gt
- Start date
TrueBlue95GT
Member
You probably have a vacuum leak somewhere. Get a vacuum gauge and check to see if the vacuum is bouncing around or low.
Is it normal for it to come and go? Everytime I've had a vacuum leak in the past, it was just there all the time. 
mo_dingo
20+ Year Stangneter 
Mrgreen94gt said:Is it normal for it to come and go? Everytime I've had a vacuum leak in the past, it was just there all the time.
No, that isn't normal. Vacuum leaks don't come and go. They should always be there. If you suspect a vacuum leak, get a vacuum gauge, and check it out anyway. It might lead you to a leak anyway (I doubt it though).
Have you ran the codes yet? Have you tried cleaning your MAF/IAT sensors? Checked the plugs (color/shape)?
Scott
mo_dingo said:
I was thinking about that today. I'm gonna run codes as soon as I can. I took the Mac intake piece off to change the couplings, which didn't work because I stupidly bought couplings that are a tad too small. The thing was such a PITA to put on last time, I've decided to do something different there. May as well inspect that stuff while it's out.
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