bwh414

I had hard shifting and loss of overdrive gear on my 99RX with 175,000 miles on it and everyone was telling me it's time to rebuild the transmission for $5,000. I took it to some small transmission shop and the old guy there replaced a "speed sensor" and it works fine, better than ever. I also had him flush the transmission and replace the fluid, but the sensor was the real fix. I'm sure it could use rebuilding after this many miles, but I was thrilled to get by for $200 and still use it as a spare vehicle in the winter and other times.

Good luck,

Brian

Hello Can,

I have the exact same problem, I wonder what it was in your case! How did you fix it. I took to the repair shop they said it tranmission and need to replace and after they rebuilt the problem seems never fixed. Please let me know or email me at nguocphong@gmail.com. It cost me too much money but the problem never fixed!

thank you,

nguoc phong

Hello,

I'm a first time poster to the forum. I have a 99 RX300, fwd, 128K.

I have just recently experience a problem of not being able to shift from 3rd to 4th gear. After getting to 40 mph, it appears that there's no up shifting for any speed higher. The RPM at 60 mph is around 3K, and 70 mph is around 4K.

I checked my fluids (oil and transmission) and they appear to be in line. I don't know if this is the beginning signs of a transmission overhaul. I'm planning to take it to nearby shop next week, but would appreciate it if anyone has any insight or has experienced a similar upshifting problems.

Thank you in advance. My apologies if this topic has been covered in a past thread.

Best,

Can

I drive by a couple transmission shops every day, and judging from the number of newer cars outside, I would say that there are many makes and models of cars that experience premature transmission failure. The number one reason being that most people never have their transmission serviced until it fails. That's a fact.

I own a 99 RX AWD with 175,000 miles on it. My transmission starting slipping badly recently, almost like it was slipping into neutral and then shifting into the next gear, very hard shifting. All mechanics around here (Louisville, KY) told me with this mileage it needed to be rebuilt for about $5,000. I drove it to another small town to look at a used car for my daughter and the only good thing the sleazy salesman did for me was to tell me to take it to a small transmission shop in a nearby town, where I left it for 2 weeks. This old guy was going to check into a rebuilt tranny for about $2500 plus labor, but also said he would check out some other possibilities. He replaced the speed sensor and it worked like new. I think there is more than one sensor. He later flushed out the old fluid and replaced it and it shifts as good as new. All for about $200. So ask your mechanic or transmission shop to check out the sensors first. The only problem with this is that you are at their mercy to be honest and not sell you some repair you don't need. By the way, the repair shop I used was Transmission Exchange in Monticello, KY, out in the boondocks, but it was worth it for what they saved me.

There is an 8 year unlimited mileage warranty for oil sludge problems....Look it up and get the work done http://www.oilgelsettlement.com/

I own a 1999 RX AWD and always used Mobil 1 fully synthetic oil. I have used it in all of my vehicles for many years. I later learned that the synthetic oils do not form sludge, and I don't know whether my 99 with 175,000 miles on it has any sludge, but I've never had any problem with it. So I would recommned using the syntheic oil if you keep the truck.

Brian

There is an ECU that monitors tail and stop light bulb filament condition. It does this using a small resister in series with the plus side of the 12 volt supply. If one of these sensing resisters should fail or maybe just an ECU connection, the bulbs cannot be illuminated.

I'm having the same problem with my 99 RX after a bad trailer connection blew the tail lights and replacing the bulbs and fuse didn't help. Where is the ECU control unit located, assuming that is what is blown?

Thanks,

Brian

Anyone need thease hard to get wiring diagrams just let me know and i will email the 1 u need...

Thanks,Bryan

Can you tell me where the relay for the tail lights on the 99 rx is located? I blew mine with a bad trailer connection and replacing the regular fuse and tail light bulbs didn't solve anything. I understand there is a relay for the tail lights, but I don't see it labeled in any of the fuse boxes, under dash or hood.

Thanks,

Brian