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Old 12th April 2024, 18:58   #1
sliver
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Default multiple warning lights.

Hi everyone in need of help my rover 75 2.5 v6 auto 1999 does not want to drive far. initially took the car out with low oil in gearbox(so i found out later when i dropped 2ltrs out and put 4ltrs back in.) ep warning light came on after 10 mls had to be recovered. So gearbox fluid changed put n409 in, checked level, ok. set off for mot garage 1mile away, stopped 3 times due to loss of drive, turn engine off wait a minute, start back up drive a bit further do same procedure until at destination no warning lights no EP for gearbox. This was on wednesday, just collected car same problem coming home but with multiple lights coming on and off,airbag light, handbrake, abs and EP light if i tried to drive it normal, had it plugged in before leaving garage no codes at all. could a poor battery or a loose connection be causing these issues, this is what is stopping me from attending on sunday,your help is much appreciated thanks steve.
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Old 12th April 2024, 19:03   #2
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First port of call would be check the plenum for water 😎

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Old 12th April 2024, 19:45   #3
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Will check tomorrow, just recently found quite a lot of water in the rear nearside footwell that wasn't there before, thanks.
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Old 12th April 2024, 19:46   #4
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Check the main earth cable.
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Old 12th April 2024, 19:53   #5
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Cancel this 😁
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Old 12th April 2024, 22:34   #6
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Default Automatic gearbox problem

Quote:
Originally Posted by sliver View Post
So gearbox fluid changed put n409 in, checked level, ... stopped 3 times due to loss of drive ...
Steve, I think you mean fluid to N402 specification.
How did you check the level?
Loss of drive is usually due to low fluid level.

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Old 13th April 2024, 09:43   #7
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Good morning, update, checked plenums bone dry and clear, no multiple warning lights except abs light comes and goes as it pleases not too worried about that. I got the car in January knowing there was an issue with the gear box, when i dropped the oil i got about 2ltrs out from the drain plug did not attempt to get it out of the torque converter, put just over 4ltrs in got the car as level as possible took level plug out with engine running, dribbled a little bit, put plug back in when stopped dribbling. Took car out this morning felt it change up into 2nd then lost drive as i think it would have gone into 3rd travelled about 100mtrs, no warning light. whats the chances of the torque converter not having enough oil in it when i put the 4 ltrs in.
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Old 13th April 2024, 20:38   #8
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Thanks for your reply Steve.

Here is the fluid level checking procedure published by MG Rover in Technical Bulletin TB0080 issue 1 and summarised by me.
  1. Remove filler plug and add exactly 1 litre of fluid. Refit filler plug.
  2. Start engine and move gear selector through all positions, pausing for 2 - 3 seconds in each position.
  3. Allow the engine to idle until fluid temperature reaches 35˚C. This can be determined using a multimeter between two pins of the gearbox connector.
  4. With the engine still running remove the fluid level plug and allow excess fluid to drain completely, meaning wait until the drips stop OR the temperasture reaches 40˚C.
  5. If no fluid drains when level plug is removed, add fluid in 1 litre quantities until it does drain.
  6. Refit level plug and tighten to 15 Nm. Stop engine.

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Old 13th April 2024, 21:35   #9
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Thank you Simon for the procedure will do this next week when i get more N402, will let you know the results, once again thank you very much.
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Old 14th April 2024, 06:40   #10
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Quote:
Originally Posted by sliver View Post
... once again thank you very much.


To confirm the fluid temperature readings, with your multimeter selected to a resistance range of 2kΩ or above, separate connector C0243 (tricky, twist to release) and between male terminals 7 & 8 (refer to diagram or tiny numbers on connector) you should see these reducing readings:

35˚C = 1.7 kΩ
40˚C = 1.16 kΩ
45˚C = 1.0 kΩ

Good luck!

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