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HDGENE, Ford Senior Master/Diesel/Trans
Category: Ford
Satisfied Customers: 5498
Experience:  25 years Auto experience, Ford ,GM, Chrysler, Asian & European
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focus: i have a 2004 focus that misfires when you go to take

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i have a 2004 focus that misfires when you go to take off from a stop sign but then runs ok.any ideas
Sounds like an engine misfire. What prompted you to replace the dpfe sensor? Have you had it checked for codes with a scan tool? How many miles are on the engine and what engine do you have the 2.0 DOHC Zetec engine?
Customer: replied 4 years ago.

i have the 2.0 there is no codes yet.i had a broken piece on it

Ok do you have a lot of miles on the engine? It clears out after it runs a bit or does it start running rough again while driving?
Customer: replied 4 years ago.

it has 100,000 miles on it. it clears out when you drive it. its just when you stop and go to take off

Ok either you have an issue with a vacuum leak which would cause a rolling idle, so if that is the case I would inspect the pcv hose at the front lower corner of the engine below the lower corner of the exhaust manifold the pcv valve sits there, inspect the hose and follow it back to the underside of the intake manifold for being collapsed and replace as needed. If this is ok then a diagnostic check for codes should be done een if the check engine light isnt on to rule out other issues or pending codes. Since it isnt running rough while driving I suspect a vacuum leak.
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