Zetec Start up Problem

QLDxr · 06-12-2006, 05:30 PM

Hi Everyone,

I treated my 'good lady' to a 2004 Zetec Auto a few months ago and although she is very pleased with the car, it has a niggling problem on start-up.

On the initial start in the mornings, the engine speed is 'hunting', therefore when you select 'Drive' or 'Reverse' the car jumps about for the first 20-30 seconds and then it's fine.

Any ideas would be much appreciated.

Thanks in advance,
Mike

Ives · 06-12-2006, 05:38 PM

What do you mean by "the engine speed is hunting"? When I start my car in the morning it normally idles at 1000rpm for about 1 min or so, and then goes back to 750rpm.

But even if I was in a hurry, my car didnt "jump" when I select "R".

Maybe bad fuel?

QLDxr · 06-12-2006, 06:22 PM

The idle speed flicks between 1400 and 1000, hence causing the car to kangaroo down the street when no gas applied!

Already been to Ford dealer...they're as much use as a "handbrake on a canoe"!!!

Cheers,
Mike

Piotr · 06-12-2006, 09:08 PM

Could simply be a ECU issue. Reflash the ECU it sounds like a Cold enrichment and idle speed calibration issue.

Steffo · 06-12-2006, 11:20 PM

When I start my car (05 Zetec WP), it sits at 1250rpm while the temp gauge is on stone cold. Does this for about 2 min. Temp gauges jumps up, slows itself down to 1000rpm, then eases down to its normal 750rpm idle.

MITCHAY · 07-12-2006, 12:26 AM

Air Flow Meter possibly? RPM hunting can sometimes be caused by a faulty AFM.

Piotr · 07-12-2006, 12:46 AM

Fiesta uses MAP sensor

MITCHAY · 07-12-2006, 12:56 AM

Quote:

Originally Posted by Piotr

Fiesta uses MAP sensor

Yeah forgot to put- "If they use a AFM" sorry. I thought they were much the same thing though?