information for my z-24

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i just bought a z24 with a 3.1 liter engine and it idles rough and then on the hi-way it runs great the check engine light comes on then goes off i talked to a friend and he said it might be the e g r valve so i replaced it with a used part it's electronic so i can't disconect it. the problem is still there what do i do now.

posted by  wjb98230

fuel pump, or oxygen sensor...

posted by  wrecked00

i got the problem fixed the vacume hoses were melted through so i had no vacume

posted by  wjb98230

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