Topics and no EPace section and transmission lag?

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greensimonc

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Topics and no EPace section and transmission lag?

Postby greensimonc » Wed May 11, 2022 9:58 pm

Hi,

I was looking to (again) post about my E Pace and there isn’t a specific forum, so then under the F Pace, post to Transmission, but can’t see a NewTopic button to click….am I missing something? How do I create a post to a section that has never had any?

My question is regarding my 2020 E Pace P250 AWD and whether any other owners have experienced what might be termed a sticky throttle or gearbox lag? This happens when having to slow down say for someone turning in front, then get back on the throttle with the lightest of pressure and it seems like maybe the gearbox software is taking a while to think what gear it wants, then there’s a huge lurch forward!

I had the dealer look at last service but they said they couldn’t reproduce it.

Any similar experience?

Cheers, Simon.
'66 E Type Series 1, 4.2l 2+2 Auto
MY23 E Pace P300e R Dynamic SE AWD PHEV
Tiger Cat E1
gone and much missed:
'63 reg XF Sportbrake 3.0 v6 Diesel S Premium Luxury

steve_m
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Re: Topics and no EPace section and transmission lag?

Postby steve_m » Thu May 12, 2022 12:42 am

Not in the Jag but definitely in both Freelander 2's that we have (TD4 lumps).
Heart stopping at roundabouts.

mike020150

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Re: Topics and no EPace section and transmission lag?

Postby mike020150 » Thu May 12, 2022 10:01 am

What you describe sounds very much like turbo lag. Coming off the throttle, the lower volume of exhaust gas passing through the turbo reduces its speed creating a momentary hesitation when you demand a significant burst of power. Turbo lag has reduced massively since the days of the original Saab Turbo when it was possible to count the lag in seconds before the turbo spooled up and suddenly produced engine power. The worst situation has to be entering a roundabout on a downhill slope and trying to pull out just in front of oncoming traffic. It can still be quite heart-stopping! Modern engines deploy various tricks to mask the effect including multiple turbos of different sizes operating optimally at different engine speed and loads. Occasionally, manufacturers tweak the software controlling turbo operations to make improvements so it's always as well to ensure your car has the latest software updates. If all's well with the engine and its software, the best way not to be caught out on the road is to downshift manually (to raise the engine revs and keep the turbo spinning quickly) as you approach a roundabout or similar situation. Mike.
2014 XK Dynamic R convertible; 1977 Daimler Double Six Coupe; 2023 XE AWD 300S


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