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Old 05-08-2018, 07:44 PM   #1
Chris barlow
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Default Code 21 nightmare

Hello everyone I am new here I need help !!!
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Old 05-08-2018, 09:04 PM   #2
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Give us some background on your problem
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Old 05-08-2018, 11:55 PM   #3
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Old 05-09-2018, 10:34 PM   #4
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96 HB XE
SAS'd D44 3-link on 35s
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Old 05-12-2018, 11:17 AM   #5
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Tell us your problem man
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Old 01-30-2019, 07:43 PM   #6
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Default Code 21 2.4 1990

Hello, no one said what the problem was, but im having the same code come out on my ecm. i have no spark. i had just replaced the ecm because the electritian said that was the reason my truck would not get enough spark. so bought a new one, gave it to the mechanic, did the same thing. back firing like crazy and died after a few minutes. so the mechanic told me its the distributor now, got that replaced too. I got the engine in TDC before installing the new distributor. Started up like new. Took it home. So the next time i drove it. it was working fine but then it died out of no where. Took me a while to get it to start again, but once i got it running it died a few blocks down the street again. idle is fine, no bogging. looked up the codes on the ecm and got code 21.
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