code 23 on 305 TBI 89RS camaro

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04-25-2006, 12:27 PM

ad356

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Join Date: Apr 2006

Posts: 118

code 23 on 305 TBI 89RS camaro

m/c solenoid circuit open or grounded. what is an the m/c solenoid and what does this code mean/what sensor needs to be replaced? any help would be appricated

05-05-2006, 08:49 AM

1987IROC350

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Join Date: Nov 2005

Location: Center Point, Texas

Posts: 700

Re: code 23 on 305 TBI 89RS camaro

23 Manifold Air Temperature (MAT) sensor
Faulty MAT sensor.

Faulty or loose wiring and/or connections to the MAT sensor.

I copied and pasted this off www.iroczone.com/specs/TroubleCodes.htm

05-06-2006, 09:28 AM

Kevin91Z

3rd Gen Tech Moderator

Join Date: Jun 1999

Location: Orange County, CA

Posts: 780

Re: code 23 on 305 TBI 89RS camaro

M/C would be mixture control solenoid on a carburetor car. The book you're using is outdated. The correct problem on your car is described by 1987IROC350 above. The wiring for your MAT sensor is shorted or open, or the sensor has failed.