When in drive with engine is at it's operting temperature it idles rough. When I turn on the air conditoning the idle smooths out. This problem is intermittent. That is at times the car will idle fine then after waiting for a traffic light the engine vibrates slightly.
1997 escort idles rough, the first thing is to make sure the throtlebody plate is clean. This sounds like the idle may be staying to low at times if it smooths out with ac on, when the ac is turnned on the computer raises the idle a touch to make up for the strain on the engine from the ac compressor, clean throtlebody and look at and clean idle air control valve, if this valve is not controlling the idle when needed the engine will idle lower than normal and cause a rough idle.
Another thing is the sparkplug wires, take a look at those, if at night or with a good eye use a spray bottle and spray a mist over the wires and watch for any sparking, this spark may be very small so look at each wire closely or may be big enough to see and hear. this is where i would start. good day.
SOURCE: 1994 ford escort vibrates horribly in idle.
Your Idle air control valve is probably going bad. It is located on the throttle body and is a relatively easy fix as it is only held in with 2 screws. Good luck and thanks for using FixYa!
SOURCE: Engine problem 1999 Ford Escort 4 cyl Front
Sounds like you make have a vacumn leak on one of the rubber vacumn lines that attach to the intake manifold. Check all of these lines and look for cracks, pinholes and lines that have colapsed.
SOURCE: vibrating when idling in drive, smooths out in
You will have to replace ALL the motor and tranny mounts in a specific order.
SOURCE: car runs very rough at stops, dies at times but
There is a TSB for the PCV hose. The elbows at both ends get holes in the underside that you can't see unless you remove them and look. This is a very, very common issue on the ZX2. You can get a new PCV hose with both elbows for about $30 from the Ford dealership. You only need to remove the air intake to gain access to the PCV hose to replace it.
959 views
Usually answered in minutes!
×