Guys,
Doing some preventative and repair work. Have the intake off and wanted to change out the CPS in that it is likely the original one there. I note the electrical connection from it ends in what looks like a test port which is unattached to anything. Is this supposed to be the case ?
Thanks,
Craig

 

two sensors. the on on the block is the CPS, the other is a test sensor for diagnostics. leave it, take it out, its useless unless you have the factory tool

 

The one that is mated to a female connector on a bracket in the valley just in front of the MAF is your CPS. Soak it in PB blaster, take the screw out that holds it down and very very gently pry it out. I rotated it while slowly applying upwards pressure. If it breaks off in the cavity, I believe you can still dry to drill and pull it out or else you'll need to go from underneath to the bell housing and tap it out.

 

let that baby soak in a BATH of penetrating oil..... you can drill it out, but that is just no fun!

 

Guys,
My error.
I wrote to soon. I see the CPS that I need to access. Will remove the throttle cable wheel to access it better. Will begin the soak now.
Thanks,
Craig

 

what's the take on prophylactic CPS replacement?

 

Been having idle issues.
Replacing ISV.
Was told in other posts that CPS could be involved, and thought to replace while there.

 

I had issues with cuts on acceleration during hot days (stopped, then I punch the accelerator and the engine "dies" for a couple seconds before she goes).

Replaced the CPS at the same time while fixing hose leak and I don't have that issue anymore.

 

My engine runs great.
It is my idle that is problematic - cold worse than warm. Been through everything. Thought I'd service to a new CPS while there after 27 years.

 

Ah - I see. Thanks

 

Thanks for the reply.
Specifically, what does a problematic CPS give one ?

 

CPS out.
Wasn't as I bad as I thought for I have read all the horror stories.
New one should be here tomorrow.

 

BTW, used plastic cutting Dremel wheel. Got the bolt end plastic cut off easily. Used a small handsaw to cut in between sensor and bolt head. All the plastic fell off nicely. Allowed for penetrant to get in there. Bolt and sensor came out like a breeze.

 

Good job!

 

The bolt was a PITA for me. I used a hex key then tightened a small adjustable wrench to it so it was perpendicular to give me more surface area to pull on it and break the bolt loose.

Scrubbed the threads and put a hell of a lot of antiseize on that bolt upon reinstall.