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'02 trl blzr p-0301


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spike
New User

Aug 12, 2006, 5:29 PM

Post #1 of 5 (2155 views)
'02 trl blzr p-0301 Sign In

This code is for the number 1 cylinder misfiring is there anyone that knows what to check/change first? I just priced the coil and I hope it is not the problem($$$$$). The plug has already been changed. What is next. Is there one common problem that is recurring in this car that I need to know about? Any info? THANKS


DanD
Veteran / Moderator
DanD profile image

Aug 14, 2006, 2:40 AM

Post #2 of 5 (2144 views)
Re: '02 trl blzr p-0301 Sign In

Could you not try switching coils around and see whether the misfire follows the coil?
Dan.

Canadian "EH"






timszr2
Novice

Oct 25, 2006, 7:19 PM

Post #3 of 5 (2082 views)
Re: '02 trl blzr p-0301 Sign In

my zr2 only HAS ONE COIL. 02 BLAZ SHOULD BE THE SAME
99 zr2


steve01832
Veteran
steve01832 profile image

Oct 26, 2006, 3:18 AM

Post #4 of 5 (2081 views)
Re: '02 trl blzr p-0301 Sign In

I would start with a compression test. If it's OK then check for spark at the plug.

If that checks out fine, try cleanig the injectors with a kit you can obtain through the dealer.

Steve


DanD
Veteran / Moderator
DanD profile image

Oct 26, 2006, 4:37 AM

Post #5 of 5 (2079 views)
Re: '02 trl blzr p-0301 Sign In

Hey timszr2
Maybe we should do a little research before YOU MAKE A STATEMENT!
A 99 ZR2 or a 2002 Blazer are not the same vehicle as a 2002 Trail Blazer.
Yes the ZR2 and the Blazer only have the one coil but the Trail Blazer has individual coils my friend.
That’s why I suggested switching coils.
Dan.

02 Blazer ignition


02 Trail Blazer


Canadian "EH"










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