cutting out at 4500 rpm - Subaru Outback - Subaru Outback Forums
 
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post #1 of 6 (permalink) Old 07-28-2009, 04:34 PM Thread Starter
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Join Date: Nov 2008
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Exclamation cutting out at 4500 rpm

I need help with this quick.

For a couple weeks now i have been having problems with my engine cutting out at 4500 rpm. I have full power up til then, then pop pop pop, like i hit the rev limiter.

Its a 95 2.2l MT with 205k

I think its my MAF Sensor, its also been idling at 2000 rpm off and on. I get really strong fuel smells too.

Ive got cold air intake, obx headers to a cherry bomb with 24" of 2.25 pipe. Somebody i talked to mentioned that the flow rate of the exhaust might be too high since there is practically no restriction in my setup and it might be triggering a sensor to malfunction. But that would be an o2 sensor and i would have other running problems.

Anybody have ideas or support my MAF assumption?

It could have thrown a CEL, but ive had one constantly for about a month due to "vehicle speed sensor malfunction". I will need to get them read again to see if there is a new one.

Thanks
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post #2 of 6 (permalink) Old 07-28-2009, 05:19 PM
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Vehical speed malfunction. if its a manual that will put the car in limp mode. If its an auto, if they both arent working, that will put the car in limp mode. You are seeing limp mode.

You most likaly have multiple codes right now.


get the VSS fixed first.


nipper
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post #3 of 6 (permalink) Old 07-28-2009, 05:29 PM Thread Starter
Paladin

 
Join Date: Nov 2008
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Really.

You think the VSS will be the problem with the idling high too?

Ill do it soon as i can and let you know
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post #4 of 6 (permalink) Old 07-28-2009, 05:30 PM
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I'm not sure, but one thing at a time.

nipper
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post #5 of 6 (permalink) Old 07-29-2009, 03:59 PM Thread Starter
Paladin

 
Join Date: Nov 2008
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Car: 95 Legacy Outback, 2.2, MT, 27" Grabbers, GR2 Outback Struts, Forester King Springs= 11" clearance
Posts: 254
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I swapped MAF sensor last night and it made the problem slightly better. Still cutting out but the idling is better.

I couldnt find a VSS at the junkyard so i just grabbed an MAF while i was there. I did order a new VSS from subarugenuineparts.com should hopefully get here by friday.
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post #6 of 6 (permalink) Old 07-31-2009, 01:10 PM Thread Starter
Paladin

 
Join Date: Nov 2008
Location: Mt. Hood, OR -Westside
Car: 95 Legacy Outback, 2.2, MT, 27" Grabbers, GR2 Outback Struts, Forester King Springs= 11" clearance
Posts: 254
Feedback Score: 0 reviews
Put the new VSS in last night and it fixed everything.

I think i may have needed the MAF anyway as the car runs smoother than it did before these problems.

Thanks nipper

This little job also got me to replace my back up light sensor.
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