LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

missing/spuddering and backfiring throughout the rpm range

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Old Oct 26, 2003 | 03:20 PM
  #16  
Robert95z's Avatar
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From: Houston TX
Originally posted by Derek 94Z28
I would just suggest trying an 80 dollar, 30 minute fix before you unneccesarily replace your opti-spark. Hell if it doesn't work, put the old sensors back in and return the new ones and get your money back.

Derek
Good Idea! Im going to go buy them right now, and if they dont work i'll just return them Off to autozone.

-Robert
Old Oct 26, 2003 | 03:27 PM
  #17  
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From: Blacksburg, VA
Remember no Bosch O2 sensors lol. You don't want to be replacing them again in 2 weeks like I did. I wonder why they suck so bad in our cars...

Derek
Old Oct 26, 2003 | 03:45 PM
  #18  
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Well... autozone doesnt take returns on those kind of parts... And like i said i dont want to just dump money into it when i really dont know where the problem lays
Old Oct 26, 2003 | 06:31 PM
  #19  
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Do you have an Advance Auto around, they do take returns. I took those crappy Bosch O2's back there (even after splicing them to make them long enough to reach my header collectors).

Derek
Old Oct 26, 2003 | 07:37 PM
  #20  
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Originally posted by Derek 94Z28
Do you have an Advance Auto around, they do take returns. I took those crappy Bosch O2's back there (even after splicing them to make them long enough to reach my header collectors).

Derek
Hmm? maybe but im not sure, i'll try to find one tomorrow. thanks

-Robert
Old Oct 27, 2003 | 12:12 PM
  #21  
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From: Houston TX
Well its still running like crap... Im going to go get my O2s voltage scanned here in a little while...

One thing i noticed, i cranked it up this morning and let it idle for about 15-20 seconds... I then touched every header, each header was HOT except the #1 cylinder was barly warm... whats that mean?

After driving around for alittle while it gets just as hot but why is it not hot like all the other cylinders when i first started it up?

-Robert
Old Oct 27, 2003 | 08:03 PM
  #22  
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From: Germany
thats probably the cylinder thats missing, check the plug or wire to that cylender
Old Oct 27, 2003 | 09:28 PM
  #23  
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My car was doing the same thing that your car is doing and last friday i changed my opti-spark. It fixed the problem. I don't know how much you work on cars, but if you know a little bit you should be ok. This park is very easy to change, if you dont mind getting a lettle wet. And insted of spending 345.00 at avanced auto parts. Their is a guy by the name of Jason Cromer that will send you a new opti-spark to your door for 220.00 his phone number is 887-726-8295 this is where he works so you have to ask for him. But this is most likely your problem.


Here is another vote for the opti-spark
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