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Re: CEL Flashing 4 times on 909kt Posted by Gene N [Email] ![]() ![]() ![]() In Reply to: CEL Flashing 4 times on 909kt, Got Boost?, Tue, 8 Jul 2003 23:04:31 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I used to get this when the engine was running too lean on my 1990 turbo. The light is being triggered by the DI/APC module and if you look it up, it says excessive knocking or defective knock sensor (i.e., too much or too little knocking). Reset the DI/APC by pulling the "DI/APC Test" fuse (5 amps) in the fuse box for 30 seconds. I think it is fuse 23 but it is easy to find as it is one of the few 5 amp fuses in the fuse box. Once the DI/APC is cleared, follow the procedure to pull the error codes from the Jetronic ECU. I believe this is described on the Townsend site.
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