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Post Title: j30 bogs out over 2500rpm
Posted by: Jebadiah at 2:06 PM 6/24/2009

I have a 1995 j30 and yesterday as I was pulling into my driveway the engine light came on and it started running a little rough. This morning i had a hard time getting it going buy eventually i got it running ok with one exception. Below 2500rpm it runs fine but it bogs out over 2500rpm. i figured it may have been the fuel filter so i changed that but it didnt help at all. Any ideas what might be causing the problem? Thanx for and direction.

Post Title: Re: j30 bogs out over 2500rpm (Jebadiah)
Posted by: yodawill2000 at 2:13 PM 6/24/2009

Have you checked the codes that lit up the Check engine light ??
That might help narrow it down.

Post Title: Re: j30 bogs out over 2500rpm (yodawill2000)
Posted by: Jebadiah at 2:24 PM 6/24/2009

I dont know how to check the codes. Does anyone know of a guide to check them?

Post Title:
Posted by: yodawill2000 at 4:57 PM 6/24/2009

Its a Sticky on the main page of this forum.

Post Title:
Posted by: driverdriver at 7:34 PM 6/24/2009

Here's how to retrieve your codes:

http://forums.nicoclub.com/zerothread/217489

Post Title: Re: (driverdriver)
Posted by: Jebadiah at 5:33 PM 6/26/2009

ok so I checked the codes and it was code number 12 which was Mas Air Flow Sensor. I had already replaced the fuel filter and had no difference. I pulled the MAS and cleaned it with MAS cleaner but it was really clean to start with. That also made no difference. I think I may have no choice at this point but to take it in for analysis to pinpoint the issue. Any other ideas?

Post Title: Re: (Jebadiah)
Posted by: GerryO at 6:13 PM 6/26/2009

Check the FSM MAF trouble-shooting and specs pages, and disconnect/clean/reconnect the harness connectors to the MAF.

If it comes down to it, I believe there are MAF soldering/repair instructions floating around here somewhere and it doesn't sound like anything other than an OEM replacement unit really works.

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