Can MAF be installed backwards?
Thread Starter
Safety Car
Joined: Feb 2006
Posts: 4,541
Likes: 385
From: Fort Worth Texas
So towards the TB, as it is installed that way. I know, dumb question Lucky. I'm glad you replied. I'm trying to figure out why I'm getting rich codes, and stumble between 2-3k RPM's on 03 Z with 17k miles, Vararam, headers, hi-flow cats, and mail order tune? Any ideas Lucky? Is it getting too much air with the Vararam, and PCM compensating with too much fuel? Thanks for any help...
Tech Contributor
Joined: Jan 2007
Posts: 19,465
Likes: 1,167
From: Dyer, IN
So towards the TB, as it is installed that way. I know, dumb question Lucky. I'm glad you replied. I'm trying to figure out why I'm getting rich codes, and stumble between 2-3k RPM's on 03 Z with 17k miles, Vararam, headers, hi-flow cats, and mail order tune? Any ideas Lucky? Is it getting too much air with the Vararam, and PCM compensating with too much fuel? Thanks for any help...
Thread Starter
Safety Car
Joined: Feb 2006
Posts: 4,541
Likes: 385
From: Fort Worth Texas
Yes it is throwing rich codes for both banks. I just changed the oil, and it had good fuel odor, but it seems they all smell like fuel when you change the oil? The mail order tune leans it a bit, so I'm told. I have my tuner coming to plug into it tomorrow I hope. He should change the MAF tables?
Tech Contributor
Joined: Jan 2007
Posts: 19,465
Likes: 1,167
From: Dyer, IN
Yes it is throwing rich codes for both banks. I just changed the oil, and it had good fuel odor, but it seems they all smell like fuel when you change the oil? The mail order tune leans it a bit, so I'm told. I have my tuner coming to plug into it tomorrow I hope. He should change the MAF tables?
Le Mans Master
Joined: Mar 2002
Posts: 5,955
Likes: 161
From: PNW
Yes it is throwing rich codes for both banks. I just changed the oil, and it had good fuel odor, but it seems they all smell like fuel when you change the oil? The mail order tune leans it a bit, so I'm told. I have my tuner coming to plug into it tomorrow I hope. He should change the MAF tables?
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Thread Starter
Safety Car
Joined: Feb 2006
Posts: 4,541
Likes: 385
From: Fort Worth Texas
I just went out, and smelled the oil. It smells like oil, I just changed it maybe 200 miles ago. My exhaust tips are not really black, or have soot on them. Wouldn't they if I was actually running rich. Could a faulty 02 sensor be causing the rich codes?
Le Mans Master
Joined: Mar 2002
Posts: 5,955
Likes: 161
From: PNW
Le Mans Master
Joined: Mar 2002
Posts: 5,955
Likes: 161
From: PNW
I thought you said earlier that when you changed oil last time it did have lots of gas smell.
Thread Starter
Safety Car
Joined: Feb 2006
Posts: 4,541
Likes: 385
From: Fort Worth Texas
I was told that the mail order tune actually leans it a bit. So how could I be getting rich codes? The car does stumble at RPM's between 2-3k, but when you get into it, the car runs perfectly, and idles perfect. I have not taken the air intake assembly apart, because it looks to be installed perfectly, as the PO was a sharp guy.
Thread Starter
Safety Car
Joined: Feb 2006
Posts: 4,541
Likes: 385
From: Fort Worth Texas
Thread Starter
Safety Car
Joined: Feb 2006
Posts: 4,541
Likes: 385
From: Fort Worth Texas
Safety Car
Joined: Jul 2005
Posts: 3,572
Likes: 9
From: Jackson Tn
St. Jude Donor '06-'07-'08-'09
unplug the MAF and it will make PMC use the VE table and see if it's still rich.
if you have someone coming to tune it, he will find the problem I'm sure
if you have someone coming to tune it, he will find the problem I'm sure
Last edited by printmanjackson; May 16, 2012 at 12:48 AM.
