Focus Fanatics - View Single Post - Ztec hesitating while accelerating
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Old 09-11-2012, 11:51 AM   #3
nicksab
Focus Rookie
 
Join Date: Apr 2012
Fan#: 98348
Location: petaluma, CA
What I Drive: 2000 ford focus ZX3

Posts: 15
FF Reputation: 1 nicksab Good Standing Member
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Quote:
Originally Posted by CotyM View Post
Has the fuel pump ever been replaced? If not that's probably the problem...

If so have you replaced the fuel filter? Any vacume leaks? Also if the the throtal position sensor is going bad it will do this, but the CEL would always be on with a P0122 code...

EDIT: Also make sure you MAS sensor is pluged in (on the airbox line thing)
The fuel pump has never been replaced as far as i know.

The TPS was changed last year and the MAS is plugged in.

I doubt it is coming from the fuel pump because when accelerating, the car is not loosing speed or rpm. it just won t gain any rpm either. It is like the engine wants to rev up but somethng is keeping it from doing it. then it does rev up .

The problem onl exist under load too. Engine runs fine in neutral

What should i be looking into before rulling the fuel pump?

Thank you
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