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Old 11-12-2007, 08:31 PM
bigtimmy45 bigtimmy45 is offline
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Angry 1990 lumina 2.5L firing sequence

ok, replaced crank position sensor, ignition control module, both coil packs, plugs and wires - engine cranks but wont fire - could be I have wires set in wrong position because I could have misinterpretted the picture wrong autozone supplied

right now the sequence from top to bottom is: 4/1/3/2 - the sequence autozone gave me from top to bottom was: 1/4/2/3

if anyone knows the proper sequencing for this car, I would surely appreciate it - it could be all messed up entirely as it doesnt even seem to wanna fire after I replaced all that stuff that definitely needed replacing now tha tI can see what it looks like - one coil connection is all discolored so that is probably the bad coil but I replaced everything else anyway

the new parts are not discolored but I cannot get car to start up - it seems to crank over and then randomly it hiccups, interior light dims or goes out but for only a split second if that long - I am gonna start with firing sequence first before I try and do any more repairs because I am getting sick of fixing this car this year - I tried using a code reader and if there is a sensor also bad I didnt discover earlier, it isnt showing - perhaps because I cannot get engine started for the sensor to show itself as being bad
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Old 11-12-2007, 11:06 PM
bigtimmy45 bigtimmy45 is offline
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Re: 1990 lumina 2.5L firing sequence

scratch all that - finally got it right and autozone was correct - they just didnt have the picture well situated so I would understand it easier how to set sequence in the absence of previous wires

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