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Suppliers include people "breaking for spares" on a regular basis, when purchasing spares members should ask a supplier what they contribute to the running of the forum particularly if contacted by a Private Message
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Gen4 Auto....slow to change up when cold
07 Mar 2023 13:02 #247946
by TFL
Gen4 Auto....slow to change up when cold was created by TFL
Have owned a Gen4 Manual for 2 years and now changed to a 2020 Gen4 Auto. I prefer the auto but find that after being stood overnight and engine cold the auto won't change up to 4th (o/d) until traveled for the first 3 miles. Is there a sensor to prevent this until the engine reaches full temperature? I find it irritating to be driving in 3rd gear at high engine revs with traffic behind, beside which I don't like revving an engine above about 2500 until it is warm. Any suggestions?
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07 Mar 2023 13:31 #247947
by Lambert
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
Replied by Lambert on topic Gen4 Auto....slow to change up when cold
My 3 is exactly the same they all are. I find that it needs the first 3 bars on the temperature guage, usually about a mile and a half and it's good to go.
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
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07 Mar 2023 18:59 #247956
by Busta
Replied by Busta on topic Gen4 Auto....slow to change up when cold
Yeah they all do that. But it's funny that this is still a thing in 2020! Classic Suzuki "if it ain't broke don't fix it" approach to car manufacturing.
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07 Mar 2023 22:37 #247963
by 300bhpton
Replied by 300bhpton on topic Gen4 Auto....slow to change up when cold
I don’t think it is about being broke and not fixed. It is about emissions. When cold the engine pollutes more. The aim is to raise it to operating temps quickly.
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07 Mar 2023 22:54 #247964
by Gadget
Replied by Gadget on topic Gen4 Auto....slow to change up when cold
Yep that's standard behaviour for the auto when cold. You won't notice it in the summer.
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08 Mar 2023 01:15 #247966
by fordem
Replied by fordem on topic Gen4 Auto....slow to change up when cold
I'm going to stick my neck out and say 99% of the electronically shifted automatics, regardless of vehicle, operate like that - I just can't think of anything I've driven in the last twenty years or so that didn't.
It's not just about the engine temperatures, the automatic transmission itself doesn't work well when the fluid is cold, there's a reason the transmission fluid runs through a heat exchanger in the radiator, and it's not to help the engine run hotter.
It's not just about the engine temperatures, the automatic transmission itself doesn't work well when the fluid is cold, there's a reason the transmission fluid runs through a heat exchanger in the radiator, and it's not to help the engine run hotter.
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