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Very weird idle! (with video) PLEASE HELP!!!

Old May 5, 2011 | 09:07 AM
  #16  
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Originally Posted by Jerry321
Check your crank sensor ohms.
What should the crank sensor ohms be at?

Originally Posted by kanyonkid
what are the afr's at idle?
My wideband sensor is broken right now, I'm working on getting a new one soon!

Originally Posted by sharkm87
car sounds great, stop bragging
I agree!... in a way...
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Old May 5, 2011 | 09:10 AM
  #17  
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haha does sound like u got some cams man.. Good Luck with the fix
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Old May 5, 2011 | 09:14 AM
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Originally Posted by AdamWest
haha does sound like u got some cams man.. Good Luck with the fix
Adam!!!!!!! Stop stalking me!
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Old May 6, 2011 | 06:38 AM
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Ok, update!!!!

I first started my day off with making a handy dandy boost leak tester! It came out ver nice and it works awesome! I found 2 leaks! Im working on fixing them today and i will let everyone know if it fixes my problem!!!
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Old May 6, 2011 | 07:06 PM
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I fixed one leak witch was a very easy fix. The car still has the same problem though, it seem to be a little better. The other leak is the throttle body shaft seal. I ordered a MIL.SPEC seal and should be in sometime next week! Until then......
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Old May 18, 2011 | 07:06 PM
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Not to hijack your thread man I just saw your vid on the tube and decided to post here... I have this problem presently and not sure what it is:

Car's running 15Hg Vac and boosting fine... no leaks to my knowladge and it drives great normally... Had a JDM MR valve without any issues either.

A/C on the idle is fine and also no issue when cold. Only when warm and drive for a while then it comes up or when i pull to a stop and shut off the A/C... then it idles like your vid. I tried cleaning the MAF and no luck. Thought the manifold gasket could have a leak but usig a lil "carb spray" trick I didn't find any...

I've read here and about and was told maybe cam sensor or ICV, but a failed cam sensor would cause the car to cut out completely correct? Also wouldn't an ICV failure cause the car to idle poorly with the A/C on and cold starting?

EDIT: Ok perhaps it really is the ICV... ust unplugged it and it idled much better.

Last edited by MISHI; May 19, 2011 at 07:36 AM.
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Old May 19, 2011 | 03:14 PM
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i have change out my iac with no luck. tested it with a multimeter 30 oms . if the timing belt jumped a tooth could it be that?
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Old May 19, 2011 | 04:31 PM
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Mine sounds exactly the same - I have bigger cams but I do not (unfortuantely) know what they are cause the second owner didn't know either. Mine idles at 1000-1100 RPM and I have a weird buzzing noise that sounds like it's coming from the Intake/Injector area.

I called and talked to a Mitsu tech at the nearby dealership and he told me that one problem could be that whoever did the timing belt job didn't properly align the balance shaft.

To me that might be the cause of the buzzing, but my high idle I have yet to figure out what. I have heard that Mitsu's have pretty bad intake gaskets and that I should check that first - but easier things are boost leak checks (boost leak checker can be built with parts by your local Home Depot Racing warehouse! haha) OR checking for vacuum leaks.
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Old May 21, 2011 | 07:36 AM
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Originally Posted by benselements41
I fixed one leak witch was a very easy fix. The car still has the same problem though, it seem to be a little better. The other leak is the throttle body shaft seal. I ordered a MIL.SPEC seal and should be in sometime next week! Until then......
Any update?
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Old May 21, 2011 | 11:49 AM
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From: MinneSNOWta
Originally Posted by benselements41
I fixed one leak witch was a very easy fix. The car still has the same problem though, it seem to be a little better. The other leak is the throttle body shaft seal. I ordered a MIL.SPEC seal and should be in sometime next week! Until then......
What was the first leak that was easy? I'm thinking at least one of mine is the stock BOV (without actually boost leak testing yet) and I am going to be getting the stock IX BOV shortly anyways,so that should eliminate that!
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Old May 21, 2011 | 12:06 PM
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vac LEAK NORMALLY results in higher idle...

sounds like cams

what afr's is it at at idle? i know on my camaro when it was to rick it would do something like this
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Old May 21, 2011 | 12:07 PM
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I checked that vacuum line that was behind the intake manifold that leads to the cannister and it was a bit loose... changed that out but no real difference for me, but is a good idea to change it.
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Old May 23, 2011 | 02:28 PM
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sounds fine.. what kind of cams do you have?
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Old May 23, 2011 | 06:01 PM
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Originally Posted by ta ace
vac LEAK NORMALLY results in higher idle...

sounds like cams

what afr's is it at at idle? i know on my camaro when it was to rick it would do something like this
not always... depends on the leak. On my 93T lancer once it was so bad at idle I thought the engine failed or at least the coil paks or something engine wise did... eventually found that the gasket on the intake manifold had failed at the corner, allowing quite a lot of air to get in. It sounded worse than OP's though... more like really wild cams with a leaking plug wire... for the lack of a better example.

I'm getting a used cam and IACV sensor this week and I'll replace the IACV first... hate having people ask me what brand of cams I installed...
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Old May 24, 2011 | 02:40 PM
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So what brand of cams did you get installed...
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