...an M/C solenoid? The check engine light came on last night and when I got home, I pulled the code and I got a 23 and a 45. I know what the 45 is, but I'm lost on the 23. (See sig) It's an M/C solenoid, but I have no idea what that is. Could someone please enlighten me? Thanks

~CrasH~

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18th Anniversary Chevrolet Camaro Z28
$1500...

19th Anniversary Chevrolet Camaro LG4...
$500

Not being able to hear the wife telling you to slow down over the whine of a loose fan belt...
Priceless.

 

In a computer controlled carb, there is a solenoid that cycles to provide the proper mixture ratio. The computer changes the cycling "dwell" time to modify the enrichment with varying engine speed/load conditions.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4, 2300 stall TC. Ported World 305 heads, Crane PowerMax 2050 cam. ZZ3/4 intake, oil pump, pan & baffle. Accel HEI SuperCoil & module. Hooker 2055 headers, 3" Catco cat & 3" catback w/dual-opposite Flowmaster 80. 2.93 limited slip. Spohn SFCs waiting to be installed. AMSOIL syn lubes bumper-to-bumper. Daily year-round driver. Best ET, speed TBD...
57 Bel Air, my 1st car. '66 396, 9.7:1 forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 700 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).

 

So, can you tell me where on the carb can I find the solenoid? Is it something I can change myself? Thanks for your reply!

 

In the carb, actually. The two-wire connector on the front passenger corner of the carb goes to the MCS, which requires removal of the airhorn to replace.

Check here for a picture of the part http://www.carbs.net/quadrajet.asp (# R-4MCS1), and here for an expanded diagram of the carb http://www.carbs.net/Quads/E4MC.htm (#221 - picture points to a screw, but it's a screw for the solenoid).

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4, 2300 stall TC. Ported World 305 heads, Crane PowerMax 2050 cam. ZZ3/4 intake, oil pump, pan & baffle. Accel HEI SuperCoil & module. Hooker 2055 headers, 3" Catco cat & 3" catback w/dual-opposite Flowmaster 80. 2.93 limited slip. Spohn SFCs waiting to be installed. AMSOIL syn lubes bumper-to-bumper. Daily year-round driver. Best ET, speed TBD...
57 Bel Air, my 1st car. '66 396, 9.7:1 forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 700 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).

 

Thanks for the help. I already knew it was time for a carb rebuild, but this pretty much means right now, I guess!

~J~