Cruise Control gremlins?
Thread Starter
Race Director
Joined: Aug 2003
Posts: 11,043
Likes: 3
From: San Jose Pat Tillman - American Hero
Cruise Control gremlins?
My cruise control doesn't seem to work... On second thought, neither do my 4-way flashers. Is this a fuse issue, or is it indicative of something bigger?
Le Mans Master
Joined: Oct 2002
Posts: 7,178
Likes: 1
From: Bahston Mass.
Re: Cruise Control gremlins? (Perfusion)
Dunno if one's related to the other :confused:
But, my cruise is out, too(flasher's work). I'm hoping it's just a vacuum line problem like other's have posted.
But, my cruise is out, too(flasher's work). I'm hoping it's just a vacuum line problem like other's have posted.
Thread Starter
Race Director
Joined: Aug 2003
Posts: 11,043
Likes: 3
From: San Jose Pat Tillman - American Hero
Re: Cruise Control gremlins? (vader86)
Vacuum line issue, huh? That is definitely foreign territory to me. Anyone care to elaborate? Thanks in advance...
Burning Brakes
Joined: Oct 2002
Posts: 983
Likes: 1
From: Bergen County NJ
Re: Cruise Control gremlins? (Perfusion)
Engine vacuum is used by the CC servo to pull and hold the throttle cable. If you have a vacuum leak in the line that goes to the servo then the CC may work erratically, or not at all. Two potential vacuum problems on your '96 are:
There's a vacuum check valve/tee that's located beneath the passenger side fuel rail cover that disintegrates due to the heat. When this happens (and it's a matter of when, not if) the CC, and usually the ability to switch the air to different vents, is affected. The part is available at the dealer and is cheap.
There's also a switch mounted behind the brake pedal that releases the vacuum to the servo, disengaging the cruise when you step on the brake. I believe that on the '94 and latter C4s the bracket that holds the switch is plastic and prone to breakage. This was the case in my car and it drove me nuts until I figured it out and replaced the $7 part (ACDelco part# 3537079).
have fun tinkering :thumbs:
There's a vacuum check valve/tee that's located beneath the passenger side fuel rail cover that disintegrates due to the heat. When this happens (and it's a matter of when, not if) the CC, and usually the ability to switch the air to different vents, is affected. The part is available at the dealer and is cheap.
There's also a switch mounted behind the brake pedal that releases the vacuum to the servo, disengaging the cruise when you step on the brake. I believe that on the '94 and latter C4s the bracket that holds the switch is plastic and prone to breakage. This was the case in my car and it drove me nuts until I figured it out and replaced the $7 part (ACDelco part# 3537079).
have fun tinkering :thumbs:
Drifting
Joined: Jan 2002
Posts: 1,606
Likes: 1
From: Las Cruces NM
Re: Cruise Control gremlins? (Perfusion)
I haven't paid attention to how the turn signal stalk is set up, but on my Taurus, I had issues with the right blinker, 4 ways, and wipers, all on the stalk and the part it went into. It was sold as one piece and it solved all the problems at once. Because the cruise is on the stalk and the 4 way switch may be part of the unit, it could be the cause of the problem. Just a thought before you start searching for the always fun vacuum leak.
Chris
Chris
Burning Brakes
Joined: Jan 2001
Posts: 959
Likes: 1
From: Plano, Texas
Re: Cruise Control gremlins? (Perfusion)
When my cruise control began to go out, the cruise would "engage", then fade. My problem was a vacuum line that had sprung a small leak. My leak was at a "T" connector on the driver's side near the top of the wheel well. I have a '91.
