Questions and Answers
Windstar Cooling Fans And Plugs
Q. I have a 1995 Ford Windstar and the last few times I've started it when it was cold the idle seems to have a flutter in it. When it warms up it's fine, I've searched and can find no trouble codes. Also about the same time I noticed when I turn on the A/C the second fan on the radiator kicks on like it should when the engine is real hot, only the engine is cold and just started.
I'm leaning towards the Coolant Temperature Sensor (CTS), your thoughts? Also I want to replace the spark plugs and wires and don't know how I'm going to get to the rear plugs and wires. The shop manual says underneath but it still looks like it will be nearly impossible.
Your help greatly appreciated and thanks.
P.S. My van only has 19,000 miles on it.
A. The CTS is a logical first place to look. If you have a scan tool it is easy enough to check. Just compare the CTS reading when the engine is cold to ambient. It should be within a degree or two. If not then it needs to be replaced. You can also try cleaning the throttle chamber and IACV. That solves quite a few rough idle problems. As for the fans:
OPERATION:
The fan control system consists of two 2-speed cooling fans. The fans are controlled by the Constant Control Relay Module (CCRM) and Powertrain Control Module (PCM) , which energize the fans under the following conditions:
- Engine cooling fans are turned on if the following conditions occur:
- Engine temperatures are higher than normal. Fans start running at 215° F and stop running at 210° F .
- A/C is on and vehicle speed does not provide enough airflow. Fans start running at speeds at or below 43 mph and stop running at 48 mph.
- A/C compressor clutch is engaged.
- Cooling fans will run at high speed if engine temperature is higher than desirable and cooling fans have been operating at low speed. Fans start running at high speed at 230° F and stop running at 224° F.
So when you start your car and turn the A/C on, the fans will come on. That's normal.
Actually, from underneath is, probably, the easiest way to get to the back plugs. That's not to say it's easy, just easier.
Additional Information provided courtesy of ALLDATA
