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Guest Message by DevFuse


Hi from North County San Diego! New to USMB

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4 replies to this topic

#1 MkSurf


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Posted 06 December 2010 - 11:14 AM


My name is Mike, I'm new to USMB and a recent buyer of a 2000 Legacy L Wagon. I currently live in North County San Diego, here is Southern California.

I just recently purchased a 2000 Legacy L wagon and unfortunately shortly there after, the front right axel broke. I had the car was repaired and that entailed, upon the recommendation of a local mechanic, that I also replace the front engine mounts, which they claimed was the reason for the shifting of the motor which may have affected the the axel. Seemed far-fetched to me. BTW, if anybody cares to confirm that they have had a similar experience, please feel free to contact me.

Well that has been done, but now a new problem has surfaced (which was not there prior to the axel issue). It is apparently an issue with the Pressure Control Solenoid, error code P0748. The annoying part is that when they finished the original work as requested, they gave me the car with lights flashing on the dash, "check engine" and "AT Oil Temp" and said it was fine. Needless to say I was not happy with that. I brought it back to them and after further diagnostic, they presented me with the error code and suggested that I need to replace the said Pressure Control Solenoid and that a transmission shop would have to do it. There is also a definite change in the performance of the vehicle as it there is a delay in the shift from first to second gears and the car generally is not driving the same. Needless to say, the mechanics washed their hands of it and told me to move on and find a transmission shop to resolve the issue. I mentioned to them that this was not issue before bringing the car there and their reply was that I have no proof of that as they said it was an issue since I had brought it in.

Well after some research, it seems it could be something as simple some wires were disconnected to possibly the transmission needing work.

So after all that background, I was wondering if anybody would have some knowledge as to:

1. Could the axel breaking and the Solenoid issue be related?

2. Could engine mounts really play a role in the axel breaking?

3. When replacing the engine mounts, could there have been some electrical wiring issues involved to bring up the error code?

Thank you in advance, Mk

#2 Dogbone


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Posted 07 December 2010 - 09:40 PM

I'm new to Subarus and USMB myself, but let me welcome you just the same. :)

Regardless, I used to play around with FWD Mopars, and I will say if motor mounts are indeed broken or damaged and this allows the engine and transaxle to rock or become misaligned, it can indeed cause premature CV joint failure.

I can only assume the same would be true for Subarus.

I hope someone with more experience will chime in, but sounds to me in replacing the axles, your mechanic may have well knocked loose a wire from a tranny sending unit or something.

Maybe worth it to you to get a Haynes manual or Subaru service manual or similar, study the location of the temp sending unit, and get under the vehicle yourself to give it a once over.

Check for damaged or loose wiring around the transmission, and make sure your cooling lines from the transmission to the radiator are in tact, and not kinked as well. It may be something real simple.

Good luck.

#3 Fuzpile



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Posted 08 December 2010 - 11:22 AM

Mk, Welcome to about The best club! One could say ultimate. I think you're right-on about what happened. A little background; I'm relatively new here myself and got my 1st subie (97 Legacy) about 14 mo ago.
I had many issues where the experts here assisted me or it was covered in the extensive FAQ or Archives.
My Haynes manual says that P0748 is shift Circuit solenoid malfunction.
I'm sure you will fix it with maybe some ramps if you're fat:)
Either way chime in the "legacy to current.." area and folks will be all over it.

#4 MkSurf


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Posted 09 December 2010 - 12:40 AM

Hello and thanks for the greeting!

Well, an update. I have since taken the car to a Subaru Specialist in San Marcos, here in North County San Diego. It appears as though the transmission pan was damaged. The new shop says it looks like the previous shop had tried to jack up the motor on it when replacing the engine mounts, (which probably did not need to be replaced), and in the process dented in the pan which then broke the said solenoid sensor. So, I am going to now revisit the other shop and address this issue. Good times...

BTW, if you are in North County, San Diego and care for some great Subaru service I recommend Strictly Subarus in San Marcos. Sam and Chad were great and they really went out of their way to detail various issues and physically show me everything I needed to see.

Give 'em a call.


Thanks again for your replies and help. Happy Holidays, Mike.

#5 Fuzpile



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Posted 09 December 2010 - 01:50 AM

One could say that they were pigs yet one wasn't there like you were.
To crush the pan and cause this is complete disrespect and criminal. Yet again they would always have another version. I can't Know except for evidence. And You stated it never had those probs before and they deliver it back with all lites and codes.
They will reap what they sow and are sorta over if that is the way they deal with the general populace.

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