![]() | Home > Technical (L322) > tranmission fault limited gears in slow moving traffic only |
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Dolphinboy Member Since: 07 Dec 2009 Location: Bristol Posts: 3196 ![]() ![]() |
Maybe new radiator required. The bottom levels get gunked up and this is where the tranny oil cooler is run off from (in some models. Can’t say it’s the same in yours) |
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RRPhil Member Since: 22 Aug 2011 Location: Blackburn, Lancashire Posts: 982 ![]() ![]() |
How old is your battery?
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MR GLOVER Member Since: 03 Jan 2015 Location: grimsby Posts: 605 ![]() ![]() ![]() |
same year as mine did the same with a failing battery |
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Dustbolt Member Since: 09 Dec 2018 Location: London Posts: 12 ![]() ![]() ![]() |
The battery is a top of range bosch one only 6 months old, so if it's electrical it's to do with circuitry rather than failing battery. Also if I do diagnostics it doesn't seem to have logged as a proper fault. |
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Dustbolt Member Since: 09 Dec 2018 Location: London Posts: 12 ![]() ![]() ![]() |
Also it can happen before the engine/gearbox has had time to heat up, although I will investigate the radiator option further.
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RRPhil Member Since: 22 Aug 2011 Location: Blackburn, Lancashire Posts: 982 ![]() ![]() |
The radiator/overheating issue was on 5-speed vehicles.
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stan Site Moderator Member Since: 13 Jul 2010 Location: a moderate moderated moderator moderating moderately in moderation Posts: 35483 ![]() ![]() |
phil, slightly off topic and re your last statement, is it preferable to leave in 'd' in stop/start traffic? |
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RRPhil Member Since: 22 Aug 2011 Location: Blackburn, Lancashire Posts: 982 ![]() ![]() |
Just personal preference, really. I must admit that I can’t be bothered to select neutral for short stops. It doesn’t matter to the transmission if you leave it in ‘D’ because the turbine shaft is stationary, so the running gear doesn’t see any fatigue cycles. The additional thermal load on the fluid from the stalled converter is trivial at tickover. The downside is a slight penalty in fuel economy (as the engine idle speed control has to fuel the engine to overcome the additional converter drag) and annoying the driver behind you with your brake lights! The later 8-speed boxes introduced Neutral Idle Control to automatically disengage gear if the car was stationary with the driver’s foot on the brake, to improve fuel economy.
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stan Site Moderator Member Since: 13 Jul 2010 Location: a moderate moderated moderator moderating moderately in moderation Posts: 35483 ![]() ![]() |
excellent, thank you phil..... |
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Dustbolt Member Since: 09 Dec 2018 Location: London Posts: 12 ![]() ![]() ![]() |
Hi Phil, thanks for taking the time to reply.
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