07-01-2013, 05:34 PM
Join Date: Jun 2013
Location: Gresham, OR
What I Drive: 2002 Silver ZTW Wagon 2.0 DOHC Vin3
FF Reputation: 1
Buy-Sell-Trade Rating: (0
02 Focus Wgn 2.0 Zetec : Irregular misfire at idle / Slight stumble on accel from stop.
My first posting here, so y'all correct me if I screw it up.
My Focus wagon has about 125 k on it, and up to just recently, has always performed fine.
This current issue is stumping me though. At idle only : it will occasionally hiccup, as if there was a misfire. If the A/C is on, the problem is exacerbated. If I pop it into neutral ( it has A/T ) and turn the A/C off, the idle usually is fine.
In addition to the above, I get a slight stumble when I accelerate from a dead stop, unless I am extremely easy on the throttle.
Both of the problems occur only at idle. At any other time, the performance is fine, and my fuel mileage still hovers in the mid 20's to over 30 mpg on the road.
There are no codes, and no pending codes, and the TPS sweeps look good. I cleaned the MAF, but to no avail.
Has anyone encountered a problem like this before ?