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lately my 350 has been taking a while to shift out of 1st when cold, i checked the trans fluid level and it barely was in the stick. i added 3/4 of a quart and it now covers the xxxxxxx marks. i did check in park/idle when hot, do i have to re-check after a drive? or am i ok. thanks in advance, Mike
I assume because you said "I did check in park/idle when hot" that you drove the truck around to get it hot first? If so, yeah, you're OK
Other things about shifting, that might not be thought of, and might be a cheap thing to do first:
1) Clean the MAF - I cleaned mine a few thousand miles ago, first time, at 21K miles, and I was getting a little slipping between shifts, especially 1-2. Problems gone.
2) TPS - anything wrong with this thing will most likely cause shifting concerns.
3) IAC - is your idle OK going into and out of drive?
4) VSS - the speed sensor on the top of the rear diff. If this is skipping a beat, it can definitely cause shifting issues. You might (or might not) get a bouncy speedometer, or the ABS light on with a bad VSS, but you also might never get any other indication.
[QUOTE=krewat]I assume because you said "I did check in park/idle when hot" that you drove the truck around to get it hot first? If so, yeah, you're OK
Other things about shifting, that might not be thought of, and might be a cheap thing to do first:
1) Clean the MAF - I cleaned mine a few thousand miles ago, first time, at 21K miles, and I was getting a little slipping between shifts, especially 1-2. Problems gone.
I'm at 20k on my '06 v10
What is the MAF? How do I clean it out?
Truck is def. shifting differently then it did 5-10k miles ago
Was just at the dealer for the exhaust (pinging) TSB, Ford claims it shifts fine.... I can tell, it doesn't
That little wire thing effects shifting? I admit, I'm not the brightest in auto mechanics
The PCM (computer) will definitely use the MAF readings, combined with the TPS (throttle position sensor) to figure out how much to bang or slip the shifts.
Or, at the very least, the MAF not reading correctly effects the power output of the motor, making shifts slip more or less, making them feel "funny" ...
If you are unfortunate enough to use a K&N air filter, the MAF wires can get residual oil on them from the filter. A Q-tip soaked in contact cleaner or laquer thinner will clean them up nicely.
If you are unfortunate enough to use a K&N air filter, the MAF wires can get residual oil on them from the filter. A Q-tip soaked in contact cleaner or laquer thinner will clean them up nicely.
I would adivse against using a Qtip if you're a novice. These sensors are very delicate. Just spray some contact cleaner from a distance on the element and you should be good to go.
I cleaned the MAF with a Qtip (Carefully) and changed the fuel filter, then reset the PCM and the truck shifted better than before all this was done. When I reset the PCM I went out of my way to follow the exact proceedure. The shifting was what I was most concerned about when resetting.