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Gen4 steady throttle power loss

  • Lambert
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  • The quickest Jimny in Harrogate...(that I own)
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08 Mar 2026 10:14 #263938 by Lambert
Just started this morning. First instance on a flat road  40mph 4th gear, power dipped for less than a second and came back almost like having dirt in a carburettor jet. Then 2 short stops and one off road section later second gear 15 mph definate drop in power, foot to floor no picking up revs, dip clutch revs build engage clutch power drops again. Out onto main road 2.5 miles no issue mixed gear, loads and up and down incline and level. On rtb only 3 codes relating to old tyre pressure and 2 relating to be lidar esp system communications which I imagine would be something to do with the brake lights fuse going out. No codes relating to general obd11 or engine system or limp mode?  

Anything anyone successfully dealt with? 

Temeraire (2018 quasar grey automatic)
Pavement princess or back road menace?
Bellerophon (2024 grello van daily)
ADORJ Attention Deficit Ooooh Race Jimny!

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08 Mar 2026 20:44 #263941 by facade
No clue I'm afraid, but if it doesn't think anything is wrong then I'd look at live data to see if there is something wrong with the throttle sensor, but you'd expect if if was an intermittent connection or loss of output that it would set a code.

You'll have to contact Suzuki and pay hundreds for a diagnostic that won't find anything (Which is where I am at the moment with my Citroen, except they won't even look at it until mid April...) Then wait until it breaks and get a warranty fix having flagged the problem already.

The only other thing that springs to mind is an obstruction in the exhaust that has cleared, like half full of water or something, but I know you avoid water over the tyres too.

If it suddenly breaks, go back to the last thing that you did before it broke and start looking there :)

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