Transmission Fuse

jen · #1 11-16-2006, 08:53 AM

Hi all, hope you can help. My transmission is "catching" producing a bumpy grabing feeling when turning. The trans shop says the transmission is not damaged yet and when they reset the computer to test, the problem went away. My mechanic says it is a fuse but the SVX reference says the fuse is separate from the normal fuse boxes and is on the right side of the car. We can't find the fuse to replace. 92 SVX

Can someone please tell me where to find the fuse for the transmission?

Earthworm · #2 11-16-2006, 10:50 AM

There is a FWD fuse under the hood. It almost sounds like the AWD is binding. By default the fuse is missing. If you insert the fuse you will force front wheel drive only and if your symptoms go away you've found the problem.

mohrds · #3 11-16-2006, 11:04 AM

Sounds like binding to me.

The fuse is on the Driver's side engine compartment. If you insert a 5A fuse, it will disable the AWD and if the problem goes away, you have a very common problem. I drove around with the fuse in for about 30K before the tranny finally died, but officially, the fuse should only used for diagnostics and not for everyday driving.

Doug

Manarius · #4 11-16-2006, 11:12 AM

Quote:

Originally Posted by mohrds

Sounds like binding to me.

The fuse is on the Driver's side engine compartment. If you insert a 5A fuse, it will disable the AWD and if the problem goes away, you have a very common problem. I drove around with the fuse in for about 30K before the tranny finally died, but officially, the fuse should only used for diagnostics and not for everyday driving.

Doug

You were lucky. Odds are, you have torquebind. Having the FWD fuse in is not a solution, just a way to stop imminent disaster.

jen · #5 11-16-2006, 12:29 PM

Ok, as I understand the previous posts
1. the trans/awd fuse is located in the normal fuse box under the hood. correct?
2. there isn't supposed to be a fuse in the trans/awd place? If there is then it disables AWD?
3. What is the common problem (the computer signaling the grabbing)- how do I fix it, if it is not the missing fuse.

Note the tranny was rebuilt about 5000 miles ago.
Thank for your replys and patience, I'm jsut not sure how to proceed. The car worked fine when the computer was reset - at least on the way home. So how would I fix tourque bind. The tranny people said I needed to fix the underlying electrical problem that was messing up the normal computer function. My mechanic says it appears tobe a fuse problem. What is impending disaster?

mohrds · #6 11-16-2006, 01:48 PM

Quote:

Originally Posted by jen

Ok, as I understand the previous posts
1. the trans/awd fuse is located in the normal fuse box under the hood. correct?

Correct. On the Cover it says "FWD" for that slot. Thinking back, it may be a 10A fuse, not a 5A as I stated earlier

Quote:

Originally Posted by jen

2. there isn't supposed to be a fuse in the trans/awd place? If there is then it disables AWD?

Correct.

Quote:

Originally Posted by jen

3. What is the common problem (the computer signaling the grabbing)- how do I fix it, if it is not the missing fuse.

The famous Solenoid "C" inside the rear of the transmission. When this starts to fail, pressure sneaks through and increases torque to the rear wheels. I believe the only part you need is the valve assembly/transfer clutch, P/N 31942AA090. It may only be a broken wire inside, but as long as you have it apart, replace it. Runs about $90.00.

Here is a good discussion about it:
http://www.subaru-svx.net/forum/showthread.php?t=35657

Here is a great How-To:
http://www.subaru-svx.net/forum/show...2&postcount=23

You will need to drop the exhaust, the driveshaft and the rear third of the transmission to get to the solenoid/transfer valve (all one unit) Its about a three hour job.

Quote:

Originally Posted by jen

Note the tranny was rebuilt about 5000 miles ago.

Still under Warranty? (Fingers Crossed)

Quote:

Originally Posted by jen

Thank for your replys and patience, I'm jsut not sure how to proceed. The car worked fine when the computer was reset - at least on the way home. So how would I fix tourque bind. The tranny people said I needed to fix the underlying electrical problem that was messing up the normal computer function. My mechanic says it appears tobe a fuse problem.

Probaby not a fuse problem

Quote:

Originally Posted by jen

What is impending disaster?

It involves a tranny rebuild / replacement