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Ford Focus Transmission Problems

672 messages,  Last post on May 22, 2013 at 12:25 AM

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What is this discussion about? Ford Focus SVT, Ford Focus, Coupe, Hatchback, Sedan, Wagon

    
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Messages Page 40 of 68

#387 of 672 Re: Need part numbers for solenoids? [dno36] by tread7081

Mar 30, 2011 (4:01 pm)

Replying to: dno36 (Mar 30, 2011 3:27 pm)
Ya, called three dealers! Yes, three. They don't list them as "A" "B" etc. they all said. I found the part numbers.
 
As for them all going at once. What's your take? I personally plugged in my OBDII and the codes PO750, PO755, AND PO770 all came up. No games. Way to old for that. Shoot me some ideas if you think the OBDII reader is bad or giving false codes
 
For those like me and college was many moon rotations ago and your not interested in "call the dealer" or "google it" Here you go. Great info!
 
Shift solenoid A: P/N XS4Z-7H148-AA $32.00 same as “A,B”
This solenoid appears to ONLY control 3rd to 4th gear shifts.
 
Shift solenoid B: P/N XS4Z-7H148-AA $32.00 same as “A,B”
This solenoid only controls torque converter lockup. When this solenoid is activated, The clutch inside the torque converter locks the stator to the impeller, making it a mechanical connection rather than a fluid one. Improves engine efficiency, and also drops the rpm by 200-300.
 
Shift solenoid C: P/N XS4Z-7G484-AA $115.00 same as “C,D,E”
This is the big mamma. This solenoid controls the forward clutch for each shift. It is a pulse width-modulated solenoid, meaning the time length of a shift can be changed via an ECU tune. If this solenoid goes bad, you will have issues with the rpm jumping up really high during shifts and the trans will hesitate to go into gear.
 
Shift solenoid D: P/N XS4Z-7G484-AA $115.00 same as “C,D,E”
This solenoid controls whether or not first gear is engaged. When it is activated, it empties an accumulator filled with fluid, which releases a spring that engages 1st gear. This is why 2->1 downshifts are relatively rough. This solenoid also opens the 2nd/4th band of clutches when 1st is engaged. If this solenoid goes out, you may experience bucking when starting from a stop, or troubles downshifting into first.
 
Shift solenoid E: P/N XS4Z-7G484-AA $115.00 same as “C,D,E”
I am having a hard time figuring out what this one does, but it appears to only control 2nd to 3rd shifts.
 
EPC solenoid:
This solenoid controls how much pressure is in the solenoid system. It is told how much to give by the throttle position sensor. More throttle = more pressure.

#388 of 672 Re: Need part numbers for solenoids? [tread7081] by Mr_Shiftright HOST

Mar 30, 2011 (6:34 pm)

Replying to: tread7081 (Mar 30, 2011 4:01 pm)
I think E operates 1st and 2nd

#389 of 672 New code by tread7081

Mar 30, 2011 (8:27 pm)

Ok. Cleared codes after we first started it and drove it. Took it for a long drive in 1-2 around our small town. Now code PO771 came up only. Shift Solenoid E Performance or Stuck Off
 
Still no 3-4 nor reverse.

#390 of 672 2005 Ford Focus---transmission problem by craftyrcf

Apr 04, 2011 (5:39 pm)

Went out of town, and while on the way the transmission decided to stop shifting from 2nd to third. Went the rest of the way pushing 2nd. and came back doing 40 mi. hr. on a 65 mi. hr. freeway. Lots of fun--hey!! I talked to a few mechanics, but it sounded like they were messing with me. I knew it was transmission but not what?? Went to AAMCO and they told me the solenoid E is stuck open. And now I am reading you guys and it sounds like a Ford problem that they should honor and fix. I mean get real, 2005 and I am still paying on it. I do not know how much it will take to fix it, but is is my only car and I can't afford this!
 

#391 of 672 Re: 2005 Ford Focus---transmission problem [craftyrcf] by callyco

Apr 04, 2011 (6:43 pm)

Replying to: craftyrcf (Apr 04, 2011 5:39 pm)
Had to have the solenoids and 2nd gear band replaced on my Focus. Was shown the worn parts. The band had snapped in two. I don't know how it managed to stay on?? Mechanic said it rubbed against the solenoids eventually causing them to stick creating the shifting problems. No way to tell how long the band had been broken and wearing against the solenoids. Total repair cost was $1200. Even with that, it may still need a new transmission some time down the road. I can only pray these repairs did the trick and a new transmission won't be needed...or at least not needed for a very long time.

#392 of 672 Re: 2005 Ford Focus---transmission problem [callyco] by tread7081

Apr 04, 2011 (8:47 pm)

Replying to: callyco (Apr 04, 2011 6:43 pm)
Local shop has a few new transmissions. $1250 installed. 24month/24k mile warranty. I took it. Glad I did. I see the rebuild price.

#393 of 672 Re: 2005 Ford Focus---transmission problem [callyco] by dno36

Apr 05, 2011 (3:55 am)

Replying to: callyco (Apr 04, 2011 6:43 pm)
Now, I am not a mechanic, however, I play one on TV...LOL.
 
Seriously, while not being positive, I do not believe that the bands could rub on the solenoids, as I believe they are not in close contact at all. How could 1 band rub on all the solenoids??
 
Yes I have heard of bands breaking before, and there are a number of reasons one could break, but from rubbing on the solenoids??

#394 of 672 2002 ford focus zx3 trans problem by brianloar

Apr 12, 2011 (9:28 am)

car was jumping when going up hills thought conver was bad added a additive 2 days later have no overdrive 1st and 2nd and reverse works great but when it shifts from drive to overdrive it kicks out of gear i replaced the shift solenoid and trans fluid worked for about 10 miles and guess what no overdrive again i cleaned the filter and eveything i really need some help this is crazy would wrong trans fluid or a bad filter cause this

#395 of 672 Re: 2002 ford focus zx3 trans problem [brianloar] by tread7081

Apr 12, 2011 (9:56 am)

Replying to: brianloar (Apr 12, 2011 9:28 am)
I ended up just replacing my trans for $1250 (brand new installed). Solenoid "A" and "E" are the ones known to go bad.

#396 of 672 Re: 2002 ford focus zx3 trans problem [brianloar] by dno36

Apr 12, 2011 (11:08 am)

Replying to: brianloar (Apr 12, 2011 9:28 am)
Did you get it scanned??

Messages Page 40 of 68

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