M46 overdrive issues

Joe of Loath · Mar 6th, 2017, 09:34

Hey all

I've been having issues with the overdrive on my car since I got it. Mostly it's worked OK and been reliable, but a few times, especially recently, it's become stuck. I've pressed the button and the dashboard light has turned off, but overdrive stays on in all gears. If I go down to first and drive around slowly I can make it slip in and out, but it always comes back just as I'm about to shift to second.

The last time I drove it, the overdrive stopped working completely. No light, no shift. Thankfully I was driving to work and I didn't have to go very far or faster than 50.

This behaviour suggests a bad relay to me, with sticky contacts, so I'm going to clean the relay up and reflow all the solder, is there anything else I should check? Has driving with the overdrive stuck on damaged anything? I have an M47 box and half shaft sitting in my dad's shed ready to go in, but I was hoping to keep that until I did the clutch so that I only have to drop the transmission once. Of course, I could do the clutch now and get it all over and done with.

Thanks!

Mar 6th, 2017, 09:34	#1
Joe of Loath Can I angle grind this? Last Online: May 13th, 2020 14:20 Join Date: Jul 2016 Location: Swindon	M46 overdrive issues Hey all I've been having issues with the overdrive on my car since I got it. Mostly it's worked OK and been reliable, but a few times, especially recently, it's become stuck. I've pressed the button and the dashboard light has turned off, but overdrive stays on in all gears. If I go down to first and drive around slowly I can make it slip in and out, but it always comes back just as I'm about to shift to second. The last time I drove it, the overdrive stopped working completely. No light, no shift. Thankfully I was driving to work and I didn't have to go very far or faster than 50. This behaviour suggests a bad relay to me, with sticky contacts, so I'm going to clean the relay up and reflow all the solder, is there anything else I should check? Has driving with the overdrive stuck on damaged anything? I have an M47 box and half shaft sitting in my dad's shed ready to go in, but I was hoping to keep that until I did the clutch so that I only have to drop the transmission once. Of course, I could do the clutch now and get it all over and done with. Thanks! __________________ The Eurotrash: 1988 Volvo 740 GLE 2.3 Manual 2002 Skoda Octavia 1.9TDI

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