SPRAY INTAKE CLEANER INTO BRAKE BOOST HOSE, IT GOES INTO THE INTAKE CHEAP AND EASY FIX.....
It can be issue with IAC( idle air control valve) causing the problem. http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html ------------------ http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html ----------- Cold start problem and vehicle shudder around 2500 to
3500 rpms http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html ----------- http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html ------------- http://repairhelpcenter.blogspot.com/2011/10/1996-camry-intermittent-engine-failure.html ------------ http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html ----------- http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html --------- High Idle Problem http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html --------- http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html -------- http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html ------- http://schematicsdiagram.blogspot.in/2012/03/vehicle-stumbling-at-idle-and-shows.html ----------
There are many other possibilities causing these idle issues.Engine idles rough.There are few help links with solutions to troubleshoot such idle issues.
I suggest you refer the link below and follow its troubleshooting details:------Click the link below:-----Bad miss at idle?
http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html
-----------
Stumbling and stalling at idle after engine
rebuild?
http://schematicsdiagram.blogspot.in/2012/03/stumbling-and-stalling-at-idle-after.html
------------
1999 Ford F-150 Idles rough and quits when gas pedal is pressed
less?
http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html
---------
Engine stumbles coming off idle when
warm?
Erratic idle on car?
http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html
----------
Low idle when cold out side?
GMC Sonoma Stalls and idles low
http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html
--------
GMC Idle Air Control
(IAC) Valve Replacing?
1996 Camry
intermittent engine failure while idle?
Engine quits at idle?
Car overheats and Air
blows hot at idle?
http://repairhelpcenter.blogspot.com/2012/10/high-idle-problem.html
-------
While stop engine idles like cylinder
missing?
Idle flair is noticed on car? Rough idle? car will not idle?
Erratic idle speed?
High rpm in neutral? Inconsistant high RPM in neutral?
Vehicle stumbling at idle and shows code 54?
Rough idle, staling and Erratic shifting?
http://technoanswers.blogspot.in/2012/03/rough-idlestaling-and-erratic-shifting.html
-----------While stop engine idles like cylinder
missing?
http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html
---------These details will help.Thanks.
SOURCE: ford truck f250 v8 motor idles high
the vacuum leak that causes this high idle is the gasket at the bottom of the upper intake manifold runners, they **** in, done 100's. to confirm this just spray carb cleaner at inside and outside base, when u hit the leak you will hear it. see photo.
SOURCE: Check Engine code P1409
clean the egr valve port on intake use piece of clothes rack clean the built up carbon on inside of port.
SOURCE: 2002 Ford Escape (V6) P0401 P0402 nightmare
Sounds like you have a vacuum leak, a problem with the wiring, or a bad PCM. Check wiring for pinched, chafed, pierced, or broken wires. Make sure vacuum supply is good, and not collapsing when the vehicle is running. Beyond that, a trip to the dealer may be in order.
SOURCE: 2001 taurus dohc codes 171
There is a large vac line coming straight down from the throttle body that goes to the PCV system. See if it has a hole in it. It is likely sucking air.
SOURCE: I have a 2001 Ford Escape xlt V6 3.0L engine.. I
hope this helps,Tim:
http://www.obd-codes.com/p0401
COMPONENT TESTING
DPFE Sensor
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