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check engine light 900 1993

Hello fellow Bricksters

My ever faithfull 93/945 has a check eng. light on.
The car runs ...OK, but the rpms go down to 450 and eventualy it dies.
I went to the dealer to pay $160 for diagnosis and they want $1240.00 to do
something with the fuel pressure regulator.and clean the throttle body, but
they don't know i am a Brickster, so before i let them take my first-born
i am calling on the troops to "PLEASE HELP" something doesn't sound right
with these guys at the dealer.

Thanks for the past and future help Yanni Gatos


PS: Tha car has only 69,000 miles








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    check engine light 900 1993

    My ever faithfull 93/945 has a check eng. light on.

    I believe that either the Fuel Injection (Regina?) or the Ignition will have stored a Diagnostic code that set the CE light.

    You can test for and retrieve these On Board Diagnostic (OBD) codes from the diagnostic unit at the rear of the left strut tower.

    The OBD I codes (later cars have OBD II) and retrieval procedures are in the 700/900 FAC — see the FEATURES menu at the top.
    --
    Bruce Young
    '93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.








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    check engine light 900 1993

    giasou Yanni,

    Kalimera re, ti kanies;
    If the car runs then "doubtfull" it's the fuel pressure regulator. Anyhow pull off the vacuum hose on it, and if you see fuel then it leaks out. i.e. new regulator is around 50 bucks at fcpgroton (bosch).

    If the car does not run (drivable) you didn't mention that, then definately check the above. The regulator is at the end of the fuel rail feeding the injectors. It takes about 5 minutes to change it. Make sure to get the original bosch one because they are "regulated" for pressure.

    Never hurts to change the regulator for a new one anyway.

    the throttle body cleaning is a good idea but won't be super necessary at the moment unless there is a problem with it's ajustment or the throttle position switch. Check to see if it "clicks" in standalone position. With car off, if you turn the throttle (at throttle body) by hand then it should "click" right away. That's an indication that the throttle position switch is properly aligned to the throttle body. Cleaning of the throttle body improves idle stabilit of course, but it really shouldn't sputter and die unless there is major gunk in there.

    hope that helps!

    Greg Mustang
    Montreal
    Canada
    greg_mustang@hotmail.com







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