Rough Idle
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From: El paso, Texas
Rough Idle
Ok well my idle was really rough once it got warmed up. In nuetral it would drop rpms to about 200 back up and try really hard to idle again. I cleaned out the MAF and it really helped. My idle is much more steady now and afr is spot on where it should be.
My vacuum gauge jumps up and down from -11 to -10 non stop but thats the only problem Im dealing with right now. I rarely have idle problems now but Im thinking I might have a vacuum leak still since my vacuum is jumping around. I installed my new injectors but they seem like they are sealed perfectly, I did have problems with them not sealing at first and tearing but now all seems good. I checked all the vacuum lines and they are all hooked up.
I did a boost leak test and didnt come up with any conclusive evidence. I did hear air but it sounded like it was going through the intake manifold and out the exhaust manifold. I sprayed the injectors with soapy water and I didnt see bubbles. I sprayed the throttle body area and other areas around the intake manifold and didnt see any bubbles there either. Ive never taken my intake mani off so I dont think it would be leaking.
So is there anything else I could do to check for leaks. Am I missing something here? What else besides a leak could be causing my rough idle?
My vacuum gauge jumps up and down from -11 to -10 non stop but thats the only problem Im dealing with right now. I rarely have idle problems now but Im thinking I might have a vacuum leak still since my vacuum is jumping around. I installed my new injectors but they seem like they are sealed perfectly, I did have problems with them not sealing at first and tearing but now all seems good. I checked all the vacuum lines and they are all hooked up.
I did a boost leak test and didnt come up with any conclusive evidence. I did hear air but it sounded like it was going through the intake manifold and out the exhaust manifold. I sprayed the injectors with soapy water and I didnt see bubbles. I sprayed the throttle body area and other areas around the intake manifold and didnt see any bubbles there either. Ive never taken my intake mani off so I dont think it would be leaking.
So is there anything else I could do to check for leaks. Am I missing something here? What else besides a leak could be causing my rough idle?
If you're vaccum is jumping when the idle is bouncing up and down I wouldn't worry about a vaccum leak. What intake do you have on the car? Most aftermarket intakes cause the car to idle a bit rough and require maf scaling.
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From: El paso, Texas
I have a k&n filter on the stock pipe. My filter is really dirty though I took it off roading a few weekends ago. Could that cause the vacuum jump? I already have a new one on the way but Im not sure if that is really the cause.
When I turn the car on when its warmed up, the vacuum jumps around to -4 psi to -11 psi and my rpms are around 500-600 rpm for about 10 seconds and then it settles at 800 rpm and -12 vacuum and doesnt show up again
When I turn the car on when its warmed up, the vacuum jumps around to -4 psi to -11 psi and my rpms are around 500-600 rpm for about 10 seconds and then it settles at 800 rpm and -12 vacuum and doesnt show up again
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