Question about 2001 Ford Escort ZX2
Code reader >po171system lean bank one. I can`t find any vacuum leaks.One place said oxygen sensor bad,But this car has two one up stream one down stream.Another place said idol air controal valve bad,and another said throttle position sensor bad or idol speed control bad. Engine runs fast at warm up,car accelerates fine,pulls and runs fine at all speeds.don`t smoke.What do you think? thank you.
I decided to check the idol air control valve,when I removed it I found the problem right behind it. The P C V valve hose was just about into where it fastens to the intake,the other end was bad also. Cost me aout $6.00 Where auto parts stores were telling me parts would cost two or three hundred $$.
Posted on Jan 21, 2009
Yeah it your mass air flow sensor take apart the air filter case its right in back of there its 200 to replace i had the same promblem
Posted on Feb 13, 2009
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
It either has a vacuum leak or a dirty MAF. To test for vac leaks spray the engine with carb cleaner to see if the engine speed changes., if it does you fond the leak. The most common leak is pcv line coming straight off the back of the throttle body. Check there first. Also check to make sure there are no air leaks between the throttle body and the mass air flow. Don't replace the idle speed motor or the tps, they won't fix it. It is possible the o2 is the problem, but it usually isn't. P0107 Is usually always from the stuff i listed above.
Posted on Mar 01, 2009
Tips for a great answer:
Oct 25, 2015 | Cars & Trucks
Aug 16, 2015 | Ford Cars & Trucks
Apr 19, 2014 | 1995 Toyota Hi-Ace
Mar 24, 2011 | Ford Escort Cars & Trucks
Aug 27, 2010 | 2003 Ford Explorer
Jun 22, 2009 | Ford Windstar Cars & Trucks
Mar 12, 2009 | 2003 Saturn VUE
Mar 01, 2009 | 2000 Ford Escort
Dec 16, 2008 | 2003 GMC Yukon XL
Sep 07, 2015 | 2001 Ford Escort ZX2
385 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: