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MAF Problem?

This is a discussion on MAF Problem? within the Computer & Tuning forums, part of the LSx Technical Help Section category; 2000 Camaro SS Quick summary of my problem- Car was running fine until this morning. The Service Engine Soon light ...

  1. #1
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    MAF Problem?

    2000 Camaro SS

    Quick summary of my problem-
    Car was running fine until this morning.
    The Service Engine Soon light came on/flashing and the car started running rough.
    Within 3 miles it got progressively worse until the car eventually stalled and would not start again.
    After having the car towed back to my house I ran the codes and got P0101 and P0301.

    I've seen where the MAF can make the car run rough, but now it won't start at all?

    Has anyone experienced this?

    I figure i'd start with:
    Cleaning MAF/replacing plugs & wires.
    If that doesn't work, replacing MAF.


    Any other suggestions?

    Thank you

  2. #2
    Veteran 0rion's Avatar
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    yeah....I would think the car should definitely start. 301 is a misfire cylinder 1 in case you haven't looked it up yet......sure it wasn't a p0300 which would be random multiple misfires? Might pull those plugs and see what they look like....maybe they're just all fouled or something??

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    it was definately:
    P0101 MAF
    P0301 Cylinder 1 Misfire

    The circuit board on the side of MAF was missing the cover and was covered in sludge. I figured that had to be it. I reset the codes, replaced the MAF........the car does the same thing--starts upvery hard, runs rough for a few seconds, and dies.
    P0101 and P0301 did not come back. However, it threw a P0108 (MAP High Output) briefly, which went away and will not come back. I find it very unlikely that the MAF and MAP went at the sametime.
    The car is getting fuel, the car is getting spark.

    I'm at a loss.

    Any ideas?

  4. #4
    Yeah baby! Yeah! silverWS6's Avatar
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    Try another MAF, anybody you know with another LS1 that'll let you run their MAF for few minutes maybe

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    The MAF code did not come back after putting a new DELCO one in.....

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    Yeah baby! Yeah! silverWS6's Avatar
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    Ahhh I missed that part. Have you pulled the plugs?

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    Former Mopar Man 2002ssslp's Avatar
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    Check the plug wires, one of them may have pulled off. I was at the track last month and when I left the line and hit 2nd gear my SES light started blinking. One of my plug wires came off, I still ran a 14.6 on 7 cylinders. Check the wires.
    My ride is a 2002 Camaro SS SLP #3296 with 30k, LTH, 3" Y, CME, Frost tune, K&N, ported TB, Blackwing lid, Bellows, MSD, Denso Iridium, and 85mm MAF, Bilsteins, Eibach springs, SLP strut brace, Adj. Panhard, TA Girdle, UMI, Pro 5.0, Nitto NT555
    My wife has a 2004 GTO with the rare SAP, 18" wheels, K&N Cold Air System, MSD, Ported TB, Frost tune, Denso Iridium, Flowmaster cat-back, 3200 Yank, 75k

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    Check your "ENG SENS" fuse.

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    You said you were getting fuel...did you check fuel pressure with an actual fuel gauge at the rail? If so, what fuel pressure reading did you get?
    It's on jackstands.

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    ENG SENS Fuse is fine.

    Wires are connected.

    I didn't check the pressure with a gauge.The fuel pump fires up when the key is on. If i push the valve with a screwdriver fuel squirts out. Repeat key on and there is pressure again.
    I do need to check it with a gauge.

    But first, I'm going to take the valve cover off..from doing some reading I think it may be a broken valve spring.

  11. #11
    Veteran 0rion's Avatar
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    Quote Originally Posted by RRG75 View Post
    ENG SENS Fuse is fine.

    Wires are connected.

    I didn't check the pressure with a gauge.The fuel pump fires up when the key is on. If i push the valve with a screwdriver fuel squirts out. Repeat key on and there is pressure again.
    I do need to check it with a gauge.

    But first, I'm going to take the valve cover off..from doing some reading I think it may be a broken valve spring.
    this is definitely a possibility

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    It is definately a broken valve spring.
    Can anyone recommend a good stock replacement set?

  13. #13
    Veteran 0rion's Avatar
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    do you ever plan on a cam? If so don't replace them with oem...get aftermarket springs. Comp cam 918 springs are pretty popular.

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    Moderator 35th-ANV-SS's Avatar
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    Those are the ones I'm running.

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    Not really thinking about a cam. Should i just go with stock replacements?

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    Moderator 35th-ANV-SS's Avatar
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    I have a stock cam.

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    Stock are much cheaper..dilemna.

  18. #18
    Veteran 0rion's Avatar
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    the stock ones are also the very reason you're in the situation Not really much of a decision in my opinion. Because of the stock valve springs you're 1 dropped valve away from needing a new motor.

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    Good point......leaning toward the 918's.

    Should i get the 918 kit with new seals, retainers, keepers, etc?

    Does this cover the install? Do i just torque to spec as i go? or do i have to torque them in a specific order in TDC position?
    How to Replace Valve Springs

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