Fiesta Mk4 1.25 loses power at higher speed, and kangaroos when cold. Ooer!

[mattyprice4004]

Just wondered if anyone had any thoughts, a mate's Fiesta has gone a bit mental.

Above 60 the car will pull fine, then suddenly lose power and it's a challenge to get it back to even 60, seemingly random.

Also when cold, it kangaroos like a *****, and I mean pretty bad.

Are these common issues? I don't like American cars.

 

[mk1_salami]

American cars??

Anyway, maybe a problem with fueling (fuel filter, pump), or the air flow meter?

Worth checking.

 

[paradigm]

Definitely sounds fueling related to me.

 

[sigma]

The kangarooing when cold is quite common but I never found a cure for it.

 

[Janesy B]

Before my fuel pump died, I suffered from similar issues.

 

[mattyprice4004]

Cheers for the replies, it's a odd one

Due to the kangarooing only being when cold, could it be sensor or ignition related?

 

[Eliot]

Before my fuel pump died, I suffered from similar issues.

Before your pump died did it squeal when you turn the key to the second space but not attempt to start the car

 

[sigma]

Cheers for the replies, it's a odd one

Due to the kangarooing only being when cold, could it be sensor or ignition related?

I was told it was just a sensor - possibly the vehicle speed sensor(?). Think the issue just disappeared though, will report back once I've driven it a bit more.

 

[iaind]

Although a different engine by nature, the loss of power at high speed was a symptom I had when my air filter was blocked.

It's most likely fuelling related, but a dead easy thing to check so worth having a quick look before much else

 

[ajstan]

Although a different engine by nature, the loss of power at high speed was a symptom I had when my air filter was blocked.

It's most likely fuelling related, but a dead easy thing to check so worth having a quick look before much else

Air filter is no power at higher revs isn't it?