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#1063663 - 09/29/19 07:38 PM Mixture Control Solenoid  
Joined: Jun 2007
Posts: 118
Sparky Offline
Member
Sparky  Offline
Member

Joined: Jun 2007
Posts: 118
Gilbert, AZ
Getting ready to take my car in for some work. Have not ran it for a while due to bad cam. Tried to get it started but was unable. Noticed my MCC was not making the usual ticking sound when I turned on the ignition. Plugged the MCC harness into another junk carb I had laying around, an it made the clicking sound. Do these things just go bad all of a sudden, get stuck? Any thing I should try before having it replaced? Carb as rebuilt around 10 years ago.


Second owner of an 88ls with 62k miles, everything original (except radio and rims, but I have those) including window sticker from dealership

#1063705 - 10/04/19 04:43 PM Re: Mixture Control Solenoid [Re: Sparky]  
Joined: Jan 2000
Posts: 183
Rocco_Q Offline
15+ Year
Rocco_Q  Offline
15+ Year
Member

Joined: Jan 2000
Posts: 183
Rhode Island
check the resistance between the terminals on the solenoid should read 25 ohms +/- 5 ohms

#1063706 - 10/04/19 04:51 PM Re: Mixture Control Solenoid [Re: Sparky]  
Joined: Jun 2004
Posts: 292
Bitflipper Offline
15+ Year
Bitflipper  Offline
15+ Year
Member

Joined: Jun 2004
Posts: 292
Las Vegas, NV
I have replaced my MCS 2-3 times with the same symptom. Last time I did it, I forked out the cash for a genuine AC Delco one - hopefully it will last longer. The Mixture Control Solenoids and the Ignition Modules seem to be the Achilles Heel in our cars.


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#1063709 - 10/05/19 01:07 PM Re: Mixture Control Solenoid [Re: Sparky]  
Joined: May 2019
Posts: 122
T5montecarlo Offline
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T5montecarlo  Offline
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Joined: May 2019
Posts: 122
Lederach, PA
After mine had not run for some years, the MCC was also not clicking. I stuck a narrow punch into the hole in the top of the carburetor, where the MCC travel is measured, and pressed down on the plunger. Now the MCC clicks. The plunger was just stuck inside the MCC.

Try this trick first before opening the carburetor, yours might be OK.

#1063712 - 10/05/19 07:09 PM Re: Mixture Control Solenoid [Re: Sparky]  
Joined: May 2007
Posts: 4,734
Buick Runner Offline
10+ Year
Buick Runner  Offline
10+ Year
Member

Joined: May 2007
Posts: 4,734
Dharma station 1 the Hydra
It may just be sticky after sitting around for a long time. Carb parts can gum up from old gas sitting in the carb for extended periods. You have to be careful not to strip the M/C solenoid adjusting screw as it can ruin the carb and repair kits are no longer available.


SBC powered 1987 Regal with TES headers, ZZ4 intake, ZZ4 PROM chip, mini starter, THM2004R, 2500 stall converter, 2040 cam, CCC system, and 3.73 posi rear.

2008 ex NPS P71 Crown Victoria, cop motor, cop shocks, cop brakes.

Never argue with an idiot.
They will just drag you down to their level and beat you with experience.

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