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1998 V70 XC AWD Transmission Problems

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

Credit2u
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Credit2u

1998 V70 XC AWD Transmission Problems

Post by Credit2u » Thu Jul 15, 2010 1:17 am

Just bought a 1998 V70 XC AWD, would appreciate your help.

Transmission was acting up, that is the reason they were selling. My hope is that it is salvageable. Changed the transmission oil (was nasty) and some other basics. Read this forum to explore the vast wealth of information on here (much to the detriment of my sleep).

No reverse, no low, no OD(4th), up arrow flashing, SEW lights flashing, check engine light on (I believe this is known as “limp” mode?)

Went to a local parts store and borrowed their INNOVA 3120 (Nice unit, I want one, better be a good boy, maybe Santa might take notice). These are the codes I got from the car:

- P0410 – Secondary Air Injection System (have no idea what that means)
- P0734 – Gear 4 Incorrect Ratio
- P0732 – Gear 2 Incorrect Ratio
- P0733 – Gear 3 Incorrect Ratio

Cleared the codes and suddenly the car drives fine(reverse, low)… until I get on the highway heading home. The moment it tries for 4th, the check engine light comes on and it goes back into “limp”. I turn around and head back to the shop. Code when I get there is the P0734 (Gear 4 Incorrect Ratio). Cleared the code and began the drive home, decided to take a different route with lower speed limits, shifting was awkward, revved high before shifting and shift was not smooth. Check engine light went back on while shifting from 2nd to 3rd, I think, this time. Went ahead and “limped” it home.

My amateur thoughts:
- TCM?
- Solenoid(s)?
- PNP? (reverse lights work)
- Transmission just plain dead? (hope not)

I sure would appreciate your input and thoughts (on this).

Thanks!



JRL
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JRL

Re: 1998 V70 XC AWD Transmission Problems

Post by JRL » Thu Jul 15, 2010 5:29 am

Really sounds totaled.
You need a new, rebuilt or used transmission.
I've never heard of anyone trying to replace ALL the solonoids and if you did, you might as well rebuild the entire transmission and it sould as if the converter is also shot.
Not sure if the PNP is bad but at those miles a new one should go in at the same time
TCM is probably OK


2000 V70R Black, 144,000 miles Wife's R.
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jblackburn

Re: 1998 V70 XC AWD Transmission Problems

Post by jblackburn » Thu Jul 15, 2010 7:17 am

Sounds to me like it's shot too. A bad solenoid would give you a code for that, and it would only have trouble with 2 gears, not shifting through all of them; this one is having trouble grabbing gears, which means something internal.

The SAS system is something nearly everyone with a '98 has had to deal with. There is a "secondary air injection" pump under the battery tray that pumps air through the exhaust to help warm up the catalytic converter in the mornings to help out with emissions. In reality, all it does is go bad.

You'll find more in the repair database here about repairing the SAS system, but here are some tips. When you replace the pump, drill holes in the bottom of the housing to let moisture out. The SAS valve (metal canister near the back of the engine) will have to be replaced at the same time.


'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

Credit2u
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Credit2u

Re: 1998 V70 XC AWD Transmission Problems

Post by Credit2u » Thu Jul 15, 2010 9:46 am

Are you saying that this appears to be a mechanical problem in the tranmission versus an electrical from elsewhere?

Is rebuilding this transmission practical for the home do-it-yourselfer, or would you recommend the purchase of a rebuilt or used?



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jblackburn

Re: 1998 V70 XC AWD Transmission Problems

Post by jblackburn » Thu Jul 15, 2010 9:59 am

Yes, I believe it is mechanical rather than electrical. The fact that it flips out when it gets to 4th is more than just 1 solenoid alone. And if it attempts to work when reset, it is not the PNP switch either.

You could try doing a complete flush with cheap Dex-III fluid on the transmission and see if it helps or not.

I have only ever rebuilt a manual transmission, which are fairly simplistic. From what I understand, these 4-speed boxes are pretty simple in comparison to most modern transmissions, but I can tell you that getting a FWD transmission out without taking the whole engine out from the top is NOT an easy task, especially since an auto. is much clunkier than a manual. There isn't a whole lot of room to separate the two from underneath the car.

Most people choose to go with used on these, just pulling one out of another car across a similar span of years (e.g. for my 98 I could use a 96-98 transmission). However, with the AWD system, you're pretty much limited to specifically a '98 AWD model. That's going to make looking for one a bit more tricky.


'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

ecbsykes
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ecbsykes

Re: 1998 V70 XC AWD Transmission Problems

Post by ecbsykes » Thu Jul 15, 2010 10:03 am

Unless you have a lot of experience in the field of transmissions, I'm pretty sure a home rebuild is not advisable...

And yes, I think the general consensus so far is that a hand grenade pretty much went off inside the tranny, not just an electrical fluke. You did know about these issues before buying the car right?


2000 V70XC - 288,000 miles
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Credit2u
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Credit2u

Re: 1998 V70 XC AWD Transmission Problems

Post by Credit2u » Thu Jul 15, 2010 10:12 am

Paid $500 for it. Has brand new tires, figured it was worthwhile.

Any companies you might recommend for used transmissions, or perhaps some you might recommend to stay away from?



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jblackburn

Re: 1998 V70 XC AWD Transmission Problems

Post by jblackburn » Thu Jul 15, 2010 10:54 am

stay away from?
AAMCO. Do not come within a 5-mile radius of one, they will rip you off as soon as you look the other way. They wanted $2500 to rebuild my Accord's, almost twice as much as I paid for the WHOLE CAR! Parts were a whopping $200 something, I have no idea where they came up with that estimate.

Shop around, get several estimates, and see what other people around your area recommend. There are small independent transmission shops everywhere. Ask, too, if you were to pick up another transmission and bring it to them what they would charge to remove & install the new one.


'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

Credit2u
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Credit2u

Re: 1998 V70 XC AWD Transmission Problems

Post by Credit2u » Thu Jul 15, 2010 11:28 am

I'm going to look real stupid for asking this.

I do not see a turbo unit in the engine compartment, but the placement of everything in this is lost on me. I have been wrenching on a 84 NA 944 the past 8 years or so.

The VIN number is YV1LZ564XW2455004.

I think that it is supposed to be a 2.4L Turbo, correct? I'm sure I would sound even more foolish if I said I was sure it is and am wrong.



jblackburn
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jblackburn

Re: 1998 V70 XC AWD Transmission Problems

Post by jblackburn » Thu Jul 15, 2010 11:32 am

It's a turbo :mrgreen:

If you look under the hood you will see these two intercooler pipes:
Image

The turbo is at the back of the engine compartment under a heat shield.

I guess I should have said earlier, try flushing the fluid in the transmission before you go seeking out a new one. Who knows, it may help. I thought mine was shot over 50,000 miles ago, and switched to a synthetic ATF, and it hasn't had a single problem since.


'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

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