There is a tiny screw that secures the plastic ignition switch in place, although mine is a Phillips head. If it were that, the switch would come off when you pulled it toward the firewall.

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Greetings all,

99 EV-based Winnebago Rialta owner here.? It is over 7000 lbs dry so it taxes the transmission even on flat roads.? The T4 Eurovan stock cooler runs transmission fluid through pipes in a bath of engine coolant, once the engine is warmed up (nominally 190F) the transmission fluid can never be cooler than the engine coolant, at best. According to German Transaxle of Bend, OR, over 90% of the EV transmissions they rebuild every year failed due to overheating.? In fact, German Transaxle installs an external cooler on every rebuild and their 4-year/48,000 mile warranty is only valid with this cooler installed and fluid changed every 20,000 miles.

When we first bought the Rialta three years ago, the transmission temps would get up well over 200F and stay there, especially in hilly terrain or stop-and-go traffic... I even saw something like 275F briefly during a longish climb in the Ozarks.?

Based on recommendations from other Rialta owners, ? I installed a True-cool external transmission fluid cooler with a Thermostasis bypass (sort of like a thermostat but doesn't close completely) in place of the stock VW? fluid-to-fluid cooler.? In the 8000 miles since installing the external cooler and bypass, the normal operating temp is 159-164F and the highest I have seen is 195F when in a slow-moving traffic jam.

The cost of this mod depends a bit on how far you go.? See prices below.

1.? The cooler kit is $179 including shipping from Macko Transmissions here:

2. The bypass, which even people in Florida have found necessary, adds another $42.95 ($124.95 for the Thermostasis unit).

3.? Three liters of ATF (~$16.95 ea for OEM) are required due to increased system capacity. ? However, I chose to replace as much fluid as I could drain out (about 8 liters) which totaled $135.? Some Rialta owners have claimed good success with Valvoline Maxlife ATF which meet's VW's spec, is widely available, and is a lot less expensive at about $25 per gallon.

4.? ATF pan gasket and filter kit at $24.95.

For me, I also consider the cost of the Scan Gauge II ($115), the transmission dipstick and tube ($25), and Fluid Rx spot test kit ($34.95) to be part of the mod so my total investment is $638.85.

There a lot of good info (including cooler installation video) and many other things Eurovan here:

Paul in NW FL
99 EV-based Winnebago Rialta

Updating the thread:

I pulled both the TCU and ECU out of the van and brought them to work (hi-tech device engineering co). I asked one of our electrical engineers to inspect the printed circuit boards.? They found nothing wrong, all the solder joints were good, no voids, cracks, corrosion.? I did get a bit more aggressive in cleaning the pins.? After re-install, I was still in limp mode.

I decided to take the van on a trip anyway, shifting manually and going slow on the highway.? As I mentioned previously, it will often fix itself randomly along the road.? 1 hour into the drive, that's exactly what happened - into overdrive she goes - Life is Great!? Except I have no idea why it keeps doing this, and I'm certain it will fail again before long.

Once again, the instrument panel went haywire briefly, immediately before the tranny came out of limp mode.? I should mention that when this epilepsy occurs, my digital clock resets to 1PM and the trip odometer clears itself back to 0.0.? Strange...

I'll keep trying to find the problem and will update again.? Thanks.

Can we talk about it. text me at 1-251-508-9940

Are you speaking about a 93 eurovan? I am interested.

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Ah I see. I was wracking my brain trying to figure out which parts are in matching sets and other than internal eng and trans parts I couldn't think of any. And I didn't read that it was a poptop, though weekender yes.

In my opinion with the level of rust that this rig apparently has, and provided it is sans poptop, it really isn't worth much as a rolling shell. As a rolling unit w/eng & trans I think it would take a special person to buy it for $500. Certainly the sum of the parts are worth more individually, but like Cole said pulling them takes real work and time. At the junkyard maybe you'd get $75-150 depending on scrap prices at the moment.

Liebe Grü?e,
Justin

Frankfurt, Germany ??

On Jun 11, 2015, at 10:42 AM, Robert Williams Sea2river@... [ev_update] <ev_update@...> wrote:

Cigarette lighter powered without the key is a design feature and perfectly normal. The other symptoms are typical ignition switch failure.
Bob W

Thanks, Bob - you are correct about the cigarette lighter plug being powered w/o the key : I had forgotten this was the case. I realized that I had purchased a replacement switch years ago, so I followed the instructions in the files area and was able to swap it out in about an hour's time. With luck this will fix the problems I was seeing.

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"There are many things that need to be pulled out as a set."

Hmm interesting I can't really think of many (any) parts that "need to be pulled out as a set". What exactly are you referring to?

Danke für Erkl?rung!
Justin

If you overhaul your clutch now, it should be good for another 100k.?? j

As a reference, or if anyone is interested: