Question about 2000 Ford Focus
Sounds like its running lean, I would check the fuel filters some of those have two the regular rund canister type and one in a black plastic housing mounted to the left frame rail
Also check to make sure the Coolant temp sensor is good if it thinks the car is cold when its acutally hot it sends the wrong signal to the PCM and therefor it will receive the wrong settings for injector pulse width, timing,
Also disconnect the spout connector for the timing it's a small plastic plug hrness often taped to the harness so ya gotta hunt for it sorry,about 1/2"x3/4" usually near the distributor or sometimes on the passenger inner fender pull it out and see if it runs differently warmed up and wile your at it set the ignition timing at EXACTLY 10 BTDC then reinstall the little plug,
Check the MAP SENSOR hose make ure it is not cut or loos mounted and is connected on one end to a direct manifold vacuum source, also check for any loose or cut or disconnected vacuum lines this can cause a 'LEAN" problem because the 02 sensor sees this and compensates by telling the computer more fuel is needed when it actually does not!
If you find this information helpful please rate me accordingly and please contact me if you need any further help.
www.aceautomotive1.com check out the BLOG and FAQ
Posted on Aug 10, 2008
a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 05, 2016 | 2001 Ford Mustang GT
Dec 05, 2014 | 1999 Dodge Dakota
Mar 15, 2014 | Cars & Trucks
May 23, 2013 | Cars & Trucks
Mar 14, 2012 | 1991 Chevrolet C1500
Jul 26, 2011 | 1996 Chevrolet Camaro
Aug 08, 2009 | GMC G2500 Cars & Trucks
May 10, 2009 | 1995 Oldsmobile Eighty Eight
Mar 16, 2009 | 1998 Ford Windstar
104 people viewed this question
Usually answered in minutes!