Quote:
Originally Posted by JoeH
Also, for those with a scanguage keep in mind that the unit does not have sensors of it's own. It's plugged into the ODBI port and simply using the same sensors and PIDs that the PCM and TCM use. They are accurate and that's a good thing because that's what the engine computer is using to operate the engine.
Besides the high operating temps, 11 to 14 mpg does seem low compared to what others report. A failing FICM will typically result in ineffective fueling and combustion burn and decreased mileage. Make sure to check your voltage.
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I'm not saying the Scan Gauge isn't accurate only it doesn't reflect what a true gauge does. The engine does the same. My van has always ran about the same temp since new. Upper (normal) ECT Temps at 222-226 have always been common unless I was traveling in 110+ weather on a sharp climb. Before I had a separate coolant temp gauge, the scan gauge got to 240 IIRC in extreme conditions on one occasion.It was eye opening. But normal operation temps on my van has always been between 210 and 222 in warm weather. Ford reflashed during a warranty check and that caused the fan to operate more often which in turn cooled things down slightly. Still in extreme conditions with the A/C running, 222 was a common number. In the coarse of 10 years (as luck would have it) I've had the water pump replaced along with 2 radiators and coolant changes on a year and a half basis none of which didn't have anything to do with high ECT's.
The wiring harness going bad was the main reason I cut in the louvers. As a result I saw transmission temp drop way off. I think that the louver helped add flow through the the front grill. JMO and I could be wrong. It is amazing seeing the heat coming out of those vents and I can only believe it also helping with ECT's and EOT's.
My EGT's rarely reach 1200 and since the bullet proofing are way lower but I've yet to test it out in 110* temps pulling a grade.
I've upgraded the stock oil cooler to the newer Ford model mainly cause I didn't want to spring for the cost of the bullet proof model. My old cooler was fine according to the shop but there was no reason not to do the Ford upgrade being I was in there already.
I only recently started monitoring the oil temp but in responding to the OP's post, compared to my vehicle over the last several years,
those temps seem fairly normal to me. And as for mileage 12-13 is about right. Just because the Scan Gauge says you're getting 16 MPG don't mean nothing. Going up a hill it says 3MPG at times. When filling the tank and returning to full I typically have seen 10-13 MPG depending on the terrain I'm driving in. My van is heavy though. There are just too many variables IMO to say what the correct mileage would be from vehicle to vehicle. The same is probably be true for fluid temps. I will say that since the turbo/power upgrade I've had to put in less fuel at a spot I commonly have driven to over the years. So I know I'm getting better mileage but just don't know how much better. Again there are a lot of driving variables as well.