Thread: Slow Acceleration when engine is cold from idle

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  1. #1 Slow Acceleration when engine is cold from idle 
    SE Level Member dblisle's Avatar
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    Hey guys,

    I'm back and I replaced the Boost Bypass Solenoid, the MAF, and the EGR Purge canister but I'm still having issue with accelerating from idle when the engine is cold. The check engine light is still on with the same issues, Could the issue be the Coolant Temp Sensor or an O2 sensor about to crap out on me?

    -Dave
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  2. #2 Re: Slow Acceleration when engine is cold from idle 
    Killa Bee Scottydoggs's Avatar
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    whats the code? have you had the car scanned for codes? if not get it scanned, post the code.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  3. #3 Re: Slow Acceleration when engine is cold from idle 
    SE Level Member dblisle's Avatar
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    p0102, p0443, P0243
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  4. #4 Re: Slow Acceleration when engine is cold from idle 
    Killa Bee Scottydoggs's Avatar
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    if you unplug the maf does it run better?

    check the wires to the plug to the maf for cracks or any bare wire showing, a bad wire will cause the same code.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  5. #5 Re: Slow Acceleration when engine is cold from idle 
    SE Level Member dblisle's Avatar
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    I unplugged the MAF and there was no change.
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  6. #6 Re: Slow Acceleration when engine is cold from idle 
    Killa Bee Scottydoggs's Avatar
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    if the wires look ok, then check all the fuses as well, in the car and under the hood, one of them does power the maf. so ive read here, never had to find it myself yet.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  7. #7 Re: Slow Acceleration when engine is cold from idle 
    SE Level Member dblisle's Avatar
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    I've upload engine images to my photobucket account. Pictures by dblisle - Photobucket
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  8. #8 Re: Slow Acceleration when engine is cold from idle 
    Killa Bee Scottydoggs's Avatar
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    those pics dont say anything.

    you need to physically take the plug off the maf, top of the TB, and bend the plug end back look for cracks or bare wire showing, also check your fuse box for blown fuses.

    un wrap the wires, look at each one.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  9. #9 Re: Slow Acceleration when engine is cold from idle 
    SE Level Member dblisle's Avatar
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    I found the emissions fuse broken and replaced it. When I take the car out next I'll see if the issue has gone away.
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  10. #10 Re: Slow Acceleration when engine is cold from idle 
    SE Level Member dblisle's Avatar
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    Looks like switching out the fuse solved the issue.
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