will a weak battery affect shifting in a automatic transmision

30

Asked by Nov 23, 2015 at 09:21 AM about the 2008 Ford Focus SES

Question type: Maintenance & Repair

6 Answers

30

will a weak battery affect shifting in a automatic transmision

2 of 2 people found this helpful.
246,725

No, what is your shifting issue? How many miles? Fluid Change interval?

4 of 4 people found this helpful.
30

No, shifting in an automatic transmission is done by: A) How much throttle you are asking of it, mixed with B) Fluid pressure from the spinning gears. The movement of the transmission pushes fluid through ports and when the pressure reaches a threashold the force shifts gears. Tom above is on the right track.

2 of 2 people found this helpful.
30

Fluid was changed at 80'000 miles car has 135,000 miles. wrench light came on and went out acouple of times hasnt in 3 weeks but sometimes when I slow down to stop it down shifts hard. or taking off shifts hard into gear.

1 of 1 people found this helpful.
755

You're battery is only used to start the car once the engine is running the altinator runs all of the electronics however aa bad alternator would not have any thing to do with the car shifting hard I would take it to a reputable transmission shop and find out what is wrong with ur cars tranny

1 of 1 people found this helpful.
19,160

Try adding some Lucas Transmission Fix Stop Slip. Works great on hard shifting. Do not over fill remove a quart if necessary.

1 of 1 people found this helpful.

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