Question about Ford Cars & Trucks
We get a code reading of 122
Ever notice how a normal working vehicle will have high RPM upon initial start up? Then it will go from 1000 RPM down to 600 after a few minutes? This is because it has working temperature feedback to the ECU. After the vehicle has warmed up, it automatically adjust the fuel / air ratio and RPM level. If your car thinks its cold all of the time, it will maintain this higher RPM. Even if you see the temp gage working on the dash, there may very well be a second, separate temp sender for your ECU. One is usually located on the radiator, and the other very near to the thermostat housing.
Posted on Nov 28, 2014
Testimonial: "the idle on this truck is very high, sounds like someone trying to blow it up with their foot to the floor, then it will get eradicate before going back to supper high. we had replaced the mass air flow, o2, and the heat senor near the thermostat, because of low power and a miss. we had not solved the miss problem even though we put a tune up in it and changed the coil pack. however, it ran better for a moth. when the missing started again we checked plugs and wires. when we statred the truck again the high idle started. We checked over everything to see if something was knocked loose, we found nothing. We have checked for vacuum leeks and could find none. that is when we put on the new IAC, and throttle position senor. these made no change"
You may have a vacuum leak(hose/gasket leaking) causing the problem. the other thing is the idle speed may need to be set and there is a procedure that should be done at a shop to get it right. you could have an EGR valve that is hanging open just enough to cause a vacuum leak to cause this.
Posted on Nov 28, 2014
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.
Here's a link to this great service
Posted on Jan 02, 2017
The PCM controls idle speed to ensure good driveability. The PCM will only attempt to maintain the desired idle speed when it “knows” the throttle is closed. A throttle switch or the TPS input is used to determine when the throttle is in the idle position. Motors and solenoids are used by most PCM’s to control idle speed. Many PCM’s are programmed to attempt to control the idle speed by adjusting spark timing and then by controlling the idle speed actuator. Some computers of the early 80's did not control idle speed.
Posted on Oct 19, 2008
Some times the E.G.R. will stick half open. This will make the engine surge or have high idle. Try replaceing the E.G.R. located under the upper intake. Do not go with after market E.G.R. The spring in them are to powrefil and the E.G.R. wil not open. Also try replaceing the O2 sensors. This could give the engine more fuel thus a higher idle. Some vehicles the T.P.S. can be ajusted, do some checking to see if yours is adjustable.
Please contact me if your problem presists.
Posted on Feb 03, 2009
yes, this is the case of a failed throttle body, in which case it needs replaced, the car is getting too much fuel causing the high idle. this needs replaced asap. you could proably find a small independant honda shop that could do the work for less.
Posted on May 12, 2009
Tips for a great answer:
Jun 29, 2016 | 2003 Ford Explorer
Nov 02, 2015 | Ford Cars & Trucks
Nov 28, 2014 | Ford Cars & Trucks
Feb 13, 2014 | 1995 Geo Tracker
It can be issue
with IAC( idle air control valve) causing the problem.
are many other possibilities causing these idle issues. Engine idles rough.
are few help links with solutions to troubleshoot such idle issues.
suggest you refer the link below and follow
its troubleshooting details:------
the link below:-----
Cold start problem and vehicle shudder around 2500 to
details will help.
Feb 15, 2013 | 2003 Pontiac Grand Am
Jan 15, 2012 | 1992 Buick Century
Mar 25, 2011 | 2000 Ford Ranger SuperCab
Oct 02, 2017 | 1998 Acura CL
Dec 17, 2009 | 1994 Ford Explorer Limited
Jul 23, 2009 | 2000 Ford Ranger SuperCab
111 people viewed this question
Usually answered in minutes!