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Misfire Check engine

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Old Jul 3, 2010 | 08:30 PM
  #1  
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30coupe1
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Default Misfire Check engine

When i first start my car it runs fine. Then when it gets hot, at about 1500 rpm it seems like it has a miss and has hesitation. Then the check engine came on and if you give it gas it goes off but runs rough. Checked for vacumm leaks with carb spray, Checked all the plugs wires everything looks good. Please help me with something i have missed.
Old Jul 3, 2010 | 09:01 PM
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you can not verify the integrity of plugs and wires/ cap and rotor based soley on looks......secondary ignition parts integrity are verified though ignition scopes and viewing the pattern
Old Jul 3, 2010 | 09:18 PM
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Bubba 95SN
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Cylinder balance test after the koer test.
Old Jul 3, 2010 | 09:53 PM
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I did check the wires with a dvom, and they ohm'd all around 2, To me it seems like a simple problem, i cant seem to ever get any answers or get this figured out, i think im going to have to get in touch with my tuner.
Old Jul 4, 2010 | 09:06 AM
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Bubba 95SN
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Check engine light...did you get codes? Run the test koeo,koer,koem,cylinder balance test. These do not require special equipment. If you do these test might just get a answer all be yourself.
Old Jul 5, 2010 | 01:33 AM
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a CEL that turns off with acceleration is usually EGR related.
Old Jul 5, 2010 | 04:09 PM
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I didnt get the codes yet. Ill have to find out if there is somewhere i can go to get that done.
What should i do to check the egr?
Old Jul 5, 2010 | 07:50 PM
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When i changed head gaskets awhile ago i took off the cross over pipe that went to the back of the heads, and pluged the holes. Could this have something to do with my problem. The car runs good untill it gets hot. It also seems like the problem is slowly getting worse as time goes on.
Old Jul 5, 2010 | 09:08 PM
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pull the codes as a first step. you can do it with a paperclip and a test light.
http://sbftech.com/index.php/topic,2471.0.html
Old Jul 6, 2010 | 10:26 AM
  #10  
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i had a similar problem..... lucky i had another 302 laying around so i just swapped dizzy and it fixed my problem... could have been the pick up or the tfi module



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