Question about Cars & Trucks
This is what i found about code f85
QUESTION: 1991 Sedan Deville, 4.9 port injection
Car runs great until outside temp reaches 92 deg. or above. the car will start to cut out under load (take off or hill. if i pull over the car will idle fine rev the engine to a steady high rpm and it will cut out. i had a code e44 (o2 sensor rich)so i replaced o2 sensor with no effect. the other code received was f85 (Throttle body service required). I have checked all connectors and hoses attached to the throttle body. all ok. looking inside throttle body there ar two tubes under the flaps one is totaly restricted with a black buildup and the other partly blocked. Not sure what these tubes do and if that could cause engine to cut out when hot and under load. any ideas?
ANSWER: You found your problem which is this black residue which when hot turns to a jelly substance and blocks the idle air passage. You need to clean all that residue from the throttle body and do not forget to spray the small hole in the side of the throttle body just behind the throttle plate.
Posted on Dec 05, 2012
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Oct 03, 2016 | 2003 Cadillac CTS
Jul 22, 2016 | 2000 Cadillac Catera
Aug 29, 2013 | Cadillac CTS Cars & Trucks
Apr 22, 2013 | 1991 Cadillac DeVille
Sep 01, 2012 | 1992 Cadillac DeVille
Oct 04, 2011 | 1997 Cadillac DeVille
Feb 15, 2011 | Cadillac Escalade Cars & Trucks
Sep 18, 2009 | 1990 Cadillac SeVille
Sep 21, 2017 | Ford Cars & Trucks
181 people viewed this question
Usually answered in minutes!