PMC CODE P085
 

Hi There, 1st time Caddy ownerand new to forum.I have a '95 Eldorado TC.Recently replaced the throttle position sensor and now the "service engine soon" light is on and showing code "p085" IDLE THROTTLE ANGLE TOO HIGH.How do I set the throttle angle and rectify this so the light goes out?

RE: PMC CODE P085
 

I dont believe the TPS is adjustable on this car. I think it might be improperly installed. Recheck the relationship of the TPS lever to the throttle lever.

RE: PMC CODE P085
 

THANKS FOR RESPONSE.THE TPS WILL ONLY GO ON IN ONE POSITION,SO I DON'T THINK IT'S THE PROBLEM.I THINK THE PROBLEM IS WITH THE IDLE/AIR CONTROL.I TALKED WITH LOCAL CADDY SERVICE DEPT. AND THEY SAID IT MIGHT NEED TO BE RESET.THEY WON'T SAY HOW.THERE'S A BOLT ON THE IAC POST THAT LOOKS LIKE AN ADJUSTER.ANY SUGGESTIONS.

RE: PMC CODE P085
 

They wont say how because thats how they make their living. Idle air control motors generally cannot be adjusted, but can carbon up and be sticky. Remove it and clean the tapered pintle tip, DO NOT SPRAY THE IAC WITH CLEANER! then spray throttle body cleaner in the hole it goes in and scrub with a tooth brush. There is a learn procedure for retracting and extending the ISC pintle but you need to borrow the factory manual to do it correctly or read the instructions in the box on a new IAC. As the pintle retracts, more air bypasses, raising the idle, extended, it slows up the idle. Please list year and type of Cad in your profile signature. Hopefully someone else here is more familiar with this newer Cad than me and provide clearer steps. Do a "search" for IAC as well.
"

RE: PMC CODE P085
 

Thanks.Will let you know.

RE: PMC CODE P085
 

please post year and type of Cad in profile