Only when I start my Focus with cool engine, I hawe problems, hard to start, engine not working fine and loses power. This hapened only with cool engine, when it is operated for about 10 minutes or more, my problem is gone. Do someone could help me with clue or sugestions.

Regards

 

This sounds like a bad CHTS. If you take your car to AutoZone, they'll check the codes for free.

 

Ok, but I dont know what is CHTS. Can you tel me what is it?
Regards

 

CHTS = Cylinder Head Temp Sensor

That's only my initial guess, but there are numerous things that could cause your problem. That's why I would recommend takingyour car to AutoZone toget the codes checked for FREE. This will determine whether your ECU is throwing a CHTS code, some other code, or no codes. Please let us know the results so we can help you further.

 

Ok
. I while lett you know what I done . Im think I while try first with CHPS that cost 10 euro!

 

Ouh, Euro ... I take it that you don't have an AutoZone where you live. Don't go out and buy this part just yet. That was just my initial guess - the ECU codes would've helped to verify this, but I don't want you to replace parts you might not need.It looks like we're gonna have to do this with the trial-and-error method instead, unless your Focus has OBD that's user friendly. What year is your Focus, and is it carbureted or fuel injected?

 

My Focus is 1998 year. 2,0 16v zetec .Is not to easywhere I live to fined what is with my car, becose we have problems with something like Auto Zone in US . I men I have to drive 100 km to the 1st Ford servis in Belgrade ! By the way I live in small town near Belgrade . Thank you anyway , I will try to do something in my town in local servises . Have a nice day Barbie !!

 

I had a similar problem with my blazer, it would start up and run sluggish for a few minutes, coded out to be a bad mass-air-flow sensor, instead of replacing it I cleaned the little resistorbridge with alcohol and it works great again now.