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Thread: Obd 1.5 wtf?

  1. #11
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    Obd 1.5 wtf?


    TransAmDan's Avatar
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    Quote Originally Posted by kapri View Post
    Many thanks for your time and trouble today Dan . Having heard back from AutoPontiac ( £80+ VAT to scan )and Actron scanners it workd out cheaper in the long run to purchase one of their scanners as it is backwards compatible with the system on my car.

    Cheers
    Kev
    Sorry it couldn't talk to your car, it was certainly worth a shot as I was only around the corner, just off Sutton Road.

    Sounds like Actron is the way forward and will let you know what the ECU is complaining about.

    2000 Trans-Am WS6 LS1 M6. (The Bat)
    Corsa Cat back, 3.5" dual tips. F.A.S.T LSX Intake / F.A.S.T Fuel rails, Dynatech LT Headers / Y-Pipe / No Cats, Wisper Lid, ported MAF, Racetronix 42lb/hr fuel injectors. Hypertech 160 stat. !AIR, !EGR. Walbro 255, SPEC Stage II Clutch / Flywheel. HPTuners 1BAR SD Tune. Wide Band gauge.
    389RWHP/380RWTQ ([477HP/460TQ]Flywheel) Dyno Dynamics

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  2. #12
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    Code reader turned up from Jegs today so straight out there to get some codes. 64 , 75, 76, 77 ...HOUSE!! .
    Quick search online shows the most likely causes as 64 = exhaust leak , 75/76/77 sooted up EGR system which can be cleaned from the top. I'll order some gaskets and get on that then. Replacement headlight flip unit on it's way , best make sure the painkillers are topped up as I'll be under the bonnet soon

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    Obd 1.5 wtf?


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    64=exhaust leak??
    How does it know?

    Sure the oxygen sensor could be reporting a lean condition if the leak is upstream of the sensor but it could equally be a vacuum leak or weak injectors.

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    Obd 1.5 wtf?


    TransAmDan's Avatar
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    That's great news that you can read out the codes now. On the road to fixing it.
    The code 64, may be a sensor going, they tend to read lean when they fail after the switching has slowed down. However could be a leak or something further upstream. I dont know if your car has a sensor before and after the cat.

    Still it's a lot more progress, as you are no long working totally blind.

    2000 Trans-Am WS6 LS1 M6. (The Bat)
    Corsa Cat back, 3.5" dual tips. F.A.S.T LSX Intake / F.A.S.T Fuel rails, Dynatech LT Headers / Y-Pipe / No Cats, Wisper Lid, ported MAF, Racetronix 42lb/hr fuel injectors. Hypertech 160 stat. !AIR, !EGR. Walbro 255, SPEC Stage II Clutch / Flywheel. HPTuners 1BAR SD Tune. Wide Band gauge.
    389RWHP/380RWTQ ([477HP/460TQ]Flywheel) Dyno Dynamics

    More info and photos at:-
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    I can HEAR the exhaust leak so will be the first port of call as that is a suggested common fault .Fix it regardless , clear codes , try again. Still there , look at next most common

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    Obd 1.5 wtf?


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    If you can hear an exhaust leak then fair enough, but for a code to suggest there is an exhaust leak is ludicrous. Maybe with canbus and I'm not sure then, but definitely not ODB.
    Good luck with fix.

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    Finally got round to looking at the faults , stripped egr connection and throttle body .Some dirt in there so it's soaking. So, where are these 3 solenoid valves to do with the EGR? If I'm correct in their location then I think I may found found the issue ?

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    Is this what ir looks like , perched on top of the rh exhaust manifold ? http://www.rockauto.com/info/154/EGV...mary__ra_p.jpg

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    Obd 1.5 wtf?


    TransAmDan's Avatar
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    It looks like an EGR, but I''ve never seen it as 3 solenoids, usually the whole lot is in one can shaped device, but i guess there are various models.
    Exhaust Gas Recirculating valve, can get sooted up with carbon from the exhaust and cause errors, and running issues.

    2000 Trans-Am WS6 LS1 M6. (The Bat)
    Corsa Cat back, 3.5" dual tips. F.A.S.T LSX Intake / F.A.S.T Fuel rails, Dynatech LT Headers / Y-Pipe / No Cats, Wisper Lid, ported MAF, Racetronix 42lb/hr fuel injectors. Hypertech 160 stat. !AIR, !EGR. Walbro 255, SPEC Stage II Clutch / Flywheel. HPTuners 1BAR SD Tune. Wide Band gauge.
    389RWHP/380RWTQ ([477HP/460TQ]Flywheel) Dyno Dynamics

    More info and photos at:-
    http://www.solent-renegades.co.uk/co...-trans-am.html

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    Obd 1.5 wtf?


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    One of Clare's cars had the EGR like that. Maybe her 91 V6 Camaro?
    What type does Sarah's have?

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