Question about 1990 Buick Riviera

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What does code 26 mean?

Code 26 comes up on 1990 Riviera but we do not know what it means

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  • 75 Answers

Did you try going to Advance Auto or a similar business to check the code for that. Sometimes they can get you in the ballpark or check error codes online.

Posted on Jun 07, 2010

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Posted on Jan 02, 2017

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I have a Dodge Daytona (1990) that is showing a check engine light code of 26. Could you tell me what that means?


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Engine misses at 35 mph code po 304 coil pack plug wire replaced


Information courtesy of http://obd-codes.com

A code P0304 may mean that one or more of the following has happened:
  • Faulty spark plug or wire
  • Faulty coil (pack)
  • Faulty oxygen sensor (s)
  • Faulty fuel injector
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Running out of fuel
  • Poor compression
  • Defective computer
Possible Solutions If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Hope this helps with your problem. Best of luck.
Greg

May 21, 2009 | 1998 Buick Riviera

1 Answer

Where can I find GM Diagnostic Codes for the OBD?


go to auto zone and you can buy a haynes book for your car with the codes in the book, or buy a code scanner book.

Jan 03, 2009 | 1993 Buick Riviera

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