February 19, 2010Just put new computer in my 1989 k2500 and now the check engine light is constantly blinking as soon as the key is switch on, anybody got any idea`s what the problem is?
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February 20, 2010Blinking CEL is the computer detecting a misfire. Check your plugs, wires and distributor.
February 21, 2010Thanks for the quick answer, just to be clear this constant blinking is happening without the engine turning over it starts blinking as soon as the key is switched on, and it`s throwing a code 51.