Question about 1995 Volvo 850

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Good day ! I have a South african volvo 850turbo 1994 model which was standing for for about 2 years because the cambelt snapped and bent the vavles , we finally managed to save up enough money to buy spares and replaced the big end bearings as well as the piston rings changed the valves and done whatever was supposed to be , but i don`t know if we got the timing right as it is a bit tricky in the interrim lost the remote for the alarm . My question is would you be able to explain to me how the timing works And how can i bypass the alarm , the immobiliser seems to to cutting of the power to the injectors ?????????

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  • Rick Byrd
    Rick Byrd May 11, 2010

    94 volvo 850 timing belt diagram

    do you mean ignition timing or vale timing , there is a link to valve timing . i don't know how to bypass the immobilizer , but if you purchase a replacement remote/transmitter , it is a easy reprogramming with no tools required . hope that helps ya some .

    Thanks for using FIX YA !


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Hi Desai!
Hotwiring the immobilizer is easy: There is a panel with relays on it behind the dash. At the bottom of the steering column, by the drivers feet, there is a cover. Remove it to get access to the relay panel (just a couple of torx screws, no breakable clips as far as I can remember). Remove the "double size" relay (probably marked 210-211). Put a wire between the terminals 50E and 50F. This will hotwire the immobilizer and make sure that it always activates when turning the key.

For timing you might want to check out this link: http://www.volvoclub.org.uk/volvo_workshop-850techdocs.shtml

To make sure the valves are not interfering with the pistons you can rotatel the engine with an extended wrench on the crankshaft pulley nut (at the bottom of the timing/serpentine belt). Take out the plugs to make it easier to rotate and hear/see/feel any interference. This should always be done prior to starting the engine after an overhaul just to make sure that nothing gets damaged.
Good luck mate!

Posted on Jun 27, 2009

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