AMC Eagle Den Forum

The Shop => Transmission Shop => Topic started by: AB-SX4 on May 22, 2014, 12:51:06 AM

Title: Transmission problem
Post by: AB-SX4 on May 22, 2014, 12:51:06 AM
Hi everyone,
My 82 Eagle Ltd is having issues again. Today the transmission quit in the middle of the city in lots of traffic. Lots of fun.
No gear works. Pushed it to the side of the road and turned it off for a while. Checked fluid. Fluid looked ok. Turned on again after about 30 minutes and car drove for about 3km. Uphill there was a shudder, almost like stalling. Then same thing again at the next set of lights. No gear will engage. Got a friend to pick us up with a trailer. Got it started and moved behind the trailer, then no go again. Pushed it onto the trailer. At home it engaged in reverse to back off the trailer. Tranny makes a pretty awful sound like not being fully engaged.
Had some slippage between 2nd and 3rd in the past when not accelerating fully under load, but never slipped when accelerating fast.

Any ideas?

It only has 128,000 kms (not miles) on it right now. Tranny was serviced with filter change and band adjustment 30,000 km ago.
Title: Re: Transmission problem
Post by: mudkicker715 on May 22, 2014, 01:09:04 AM
it sounds like your transfer case slipped into false neutral
Title: Re: Transmission problem
Post by: AB-SX4 on May 22, 2014, 01:25:04 AM
I don't know much about trannys (yet). How would I go about fixing that?
Title: Re: Transmission problem
Post by: mudkicker715 on May 22, 2014, 04:15:49 AM
http://amceaglesden.com/guide/index.php?search=false+neutral&go=Go
Title: Re: Transmission problem
Post by: AB-SX4 on May 22, 2014, 11:18:54 AM
Thank you so much!
Title: Re: Transmission problem
Post by: AB-SX4 on May 22, 2014, 10:03:05 PM
Well, unfortunately this is not a false neutral problem. The transfer case and the vacuum system work perfectly fine.
The noise is coming from the bell-housing. Our suspicion is the oil pump in the tranny or the torque converter, but more likely the pump.  If this Eagle had not been in an accident years ago fixing the tranny would be the way to go. But in this case I will be looking at another Eagle this weekend.
I may still talk to a transmission shop to get a quote.
It's really too bad. Love this Eagle. The interior is in such nice shape.
Title: Re: Transmission problem
Post by: Amc1320 on May 22, 2014, 10:24:56 PM
That's bad news, sorry

However the 998 is a pretty easy transmission to rebuild in case you go that direction. You could also upgrade to a newer transmission out of a Cherokee with a little modification

Title: Re: Transmission problem
Post by: AB-SX4 on May 22, 2014, 10:30:30 PM
A few years back my husband would have done this right away. But now he's so busy building houses, he's just exhausted after work. I'd have to find someone else to do it.
Title: Re: Transmission problem
Post by: DaemonForce on May 22, 2014, 11:15:25 PM
It's really not that hard to overhaul an A-998. I'm pretty stupid about car parts and even I managed to overhaul one over 2 days. In your case it sounds like no gear works...Pay extremely close attention to your VALVE BODY. With any luck that's all you have to mess with.
Title: Re: Transmission problem
Post by: AB-SX4 on May 25, 2014, 12:36:16 PM
Thanks everyone. We know that it won't be that hard to fix the tranny, but my husband just can't so it right now and I can't do it by myself. So we parked the Eagle for now and are thinking of working on it during the winter when construction period is done.

In the mean time we have picked up a 1988 Eagle in very good condition for a price that was reasonable considering the condition. Most expensive Eagle we ever bought., but worth it.
It still needs some TLC like wheel bearing front driver's side, headlight adjustment as they are better suited for picking flowers right now, replace some missing vacuum lines and some electrical issues. But all that is really minor and the body is in really great shape without a single dent. We were very lucky to find it so close by from a lovely elderly couple.
Title: Re: Transmission problem
Post by: A-A EAGLE on May 25, 2014, 03:05:14 PM
Sounds like a clogged ATF filter. Renew it, put new oil in and see. I think the problem will be solved with that.

Anjo
Holland
Title: Re: Transmission problem
Post by: carnuck on May 29, 2014, 08:44:28 PM
I agree. Drop the pan and if the filter isn't clogged, I lay odds the valvebody is gummed up. I always add a can of STP engine oil treatment to my Mopar style trans to keep them operating correctly. The noise you hear may be a cracked flexplate, loose starter or the bolts may have fallen out of the converter and it only moves on friction driving the trans when the crank is cool enough to grip the converter hub. Another possibility is the front pump pressure regulator is jamming open and dropping line pressure.....


OH! Make sure the trans cooler in the rad isn't clogged! That's what did the same thing in my Jeep pickup!
Title: Re: Transmission problem
Post by: AB-SX4 on September 17, 2014, 02:23:14 PM
Yes, the filter is probably clogged. But it has not been in the Eagle for long. We did put a new one in after we bought it and did not put that many miles on it since. It had metal shavings in the pan though and the slippage between 2nd and 3rd when not under load, was not solved by adjusting the bands.
So some time this winter i hope we can get the tranny out and rebuild it ourselves, since the last quote I got from a shop in Calgary way $2,800!

The real bugger though is that the tranny on my new to me $2,500 Eagle is starting to act up as well!
It is a 1988 Eagle with 180,000 km on it, non lock up torque converter of course, and reverse is starting to go it seems. Sometimes it engages sometimes not. Sometimes it engages and then while driving it stops working. the engagement always seems weak, compared to the forward gears.
Checked the shift linkage, fluid level (seems like it has air bubbles though despite the fluid looking good otherwise) and adjusted the throttle linkage. We had a false neutral issue that we fixed as well. Vacuum lines were melted through. Every time that we worked on it, it worked fine for a few times after that, then a few days later, same crap again with reverse not engaging.
Any ideas?
I think it may be the valve body or the front clutch.
Title: Re: Transmission problem
Post by: carnuck on September 17, 2014, 02:28:35 PM
No filter. The transmission cooler in the rad turns into a cork in the cooling system on these cars. Large diameter fitting going in and small coming out. It took me a long time to clean mine out. I had to take the fitting off the rad (I hate doing that because they never seem to seal right again without Gaskacinch) and flush back and forth till it was clear. The crud from the old trans hides in there and either comes loose and ruins the new trans (it bypasses the filter) or plugs solid and cooks the new trans.
Title: Re: Transmission problem
Post by: carnuck on September 17, 2014, 02:34:12 PM
On the reverse not engaging, if the trans cooler isn't plugged (that lowers line pressure, which causes slippage too) then the rear band needs adjusting or the bore is scuffed badly. You are checking level in neutral warmed up? I also add a can of STP engine oil treatment (or the more expensive, but nearly identical Lucas trans treatment which also has seal softeners I don't like) while the pan is off (easiest time to pour it) and it increases the life of these trans. When I worked for A & B trans in Cloverdale, BC (back before Mt St Helens blew up) we built 727s for the RCMP and that was one of the tricks they did to help the trans last longer.
Title: Re: Transmission problem
Post by: AB-SX4 on September 17, 2014, 04:16:06 PM
We can certainly try to adjust the rear band on the '88 and see whether that does the trick. There is no slippage on the tranny of that Eagle. And when reverse engages you can get a lot of torque out of it. It just seems like it's dropping out of gear sometimes.

On the 82 the lock-up was working like a charm, but there was slippage between 2nd and 3rd if you just let the Eagle coast. If you accelerated while the shift occurred, it would not slip. May have been the throttle linkage.
The rad need to be replaced anyway and I think it will be better to go with a separate trans cooler next time.

Thanks for all your input!
Title: Re: Transmission problem
Post by: AB-SX4 on September 18, 2014, 05:57:17 PM
So, I'm going to buy a 998 from a local wrecker that came out of low mileage Eagle. It's a lock-up one. Has been sitting in the shelf at the wrecker forever. I hope the seals are ok.
This one will go into my 1982.

On the 1988 we will do some more testing, adjust bands and change the filter first and then see. I think we'll try to short-cut the tranny cooler for testing. RockAuto sells separate coolers for little money. I think that's a good way to go.

Oh, anyone know the weight of the 998 by any chance?
Title: Re: Transmission problem
Post by: Baskinator on September 18, 2014, 09:43:47 PM
Just a rough estimate, but I'd say the trans is probably ~100-150lbs.

I went with an external cooler in front of the radiator, remote filter like this http://www.amazon.com/80277-Universal-Remote-Transmission-Filter/dp/B000CIKJMY (http://www.amazon.com/80277-Universal-Remote-Transmission-Filter/dp/B000CIKJMY), and a TransGo shift kit in the valve body. When I got my project SX/4, the cooler in the radiator gave out and saturated the trans with engine coolant, which I'm sure it sat with for a couple years on the side of the street where I picked the car up. That was over 3 years ago, and I've been driving the car daily for the past 2 years. It still provides firm shifts despite poor engine performance. Heck, it even leaked for over 2 years until I recently replaced the shifter seals (I would strongly advise doing this if the valve body is out).

Have you considered attempting to rebuild the junkyard trans while it's out? It would certainly be better than taking a crap shoot and potentially setting it up for failure. Rebuild kits aren't too awfully expensive, and these are supposed to be some of the easiest transmissions to rebuild. I even have an instructional dvd for the 998 I could ship you for a few bucks.
Title: Re: Transmission problem
Post by: AB-SX4 on September 19, 2014, 01:10:36 PM
Yes, I have thought about the shift kit and rebuilding the junkyard 998 with new seals. I think we'll make a decision once we have it here. It only has 60,000 miles on it, but sat since 1995. But the whole point of getting another tranny is to not have to do the rebuild right now. May husband just does not have the time now, but I really want the car back on the road. Otherwise we could have rebuilt the existing tranny, which I still will keep for a rebuild sometime later.
I have the complete documentation for the 998 rebuild and am aware that the kits are cheap to get.
Title: Re: Transmission problem
Post by: Baskinator on September 19, 2014, 03:47:19 PM
Fair enough. I know all to well how it is to throw things together just so the car can be driven. I find myself going back a lot (now that I have time and money) and fixing things that I've already "fixed" just so they are better, cleaner, and more reliable.