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

car runs like crap HELP!!

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Old Jul 27, 2007 | 01:52 AM
  #16  
97SS0594's Avatar
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From: baycity, mi
replaced the O2's still acting up, scanned it, came up with a map sensor low voltage code and a injector fault or something, so im going to replace the map sensor and the injectors.
Old Jul 27, 2007 | 09:51 AM
  #17  
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From: High Ridge, MO
Originally Posted by 97SS0594
replaced the O2's still acting up, scanned it, came up with a map sensor low voltage code and a injector fault or something, so im going to replace the map sensor and the injectors.
Unless you're rich, why don't you diagnose this stuff before just going out and buying it all? Do you have the software to log the car? That would tell you what the MAP is reading. Injectors are pretty simple. You can pull them out and put a 12V source on them to ensure they are pulsing. If they are, I'd start looking at the injector harnesses (using a noid light). No sense replacing everything blindly, not knowing exactly what's causing the problems.
Old Jul 27, 2007 | 02:00 PM
  #18  
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From: baycity, mi
i have zietronix logging software, but my friggin cable quit working
Old Aug 11, 2007 | 08:24 PM
  #19  
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well update: found the problem, i had 3 sensors unplugged and a bunch of plug wires mixed up, along with 2 wires cut. i had the hood open at a carshow and it must have happened there but the car is running very very well now!
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