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Old 04-12-2008, 05:10 PM   #16
ibewhand
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Re: lumina "bucks" above 50mph then dies when brakes applied

i just shorted the pins on the diagnostic port. the only code i got was a 23. i googled it but havent found anything yet.
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Old 04-12-2008, 06:45 PM   #17
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Re: lumina "bucks" above 50mph then dies when brakes applied

disregard that last post. the code 23 is for air inlet temp. i had disconnected it when i took the breatherbox off.
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Old 04-13-2008, 03:03 PM   #18
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Re: lumina "bucks" above 50mph then dies when brakes applied

should the service valve remain under pressure after the car has been shut off for a good length of time?
I checked the pressure again today and left the guage connected after engine was shut off. when i returned an hour later the pressure was gone.
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Old 04-15-2008, 12:25 PM   #19
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Re: lumina "bucks" above 50mph then dies when brakes applied

i really thought that i was on the edge of a breakthrough this morning. . .

this problem existed before i replaced the plugs and wires. when i replaced the plugs and wires i wrote down the order that they were in. 1-4-3-6-2-5 and put them back the same way. this morning i noticed under the hood that the firing order is 1-4-6-3-2-5. so i swapped the 3&6 now the firing order is correct. i drove the car for a while before it started missing, but it didnt seen to be as bad. but it still does it.
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