Slight hiccup at limp mode

GT456! · Post by **GT456!** » Sat May 30, 2026 8:45 pm

While finishing up the second half/ leg of the 500 mile journey...the X3 went into limp mode, started to idle crappy and the car crused to 15 mph. Outside temps mild. No check engine light. No response from the gas pedal. Pulled over, stopped and then turned off the engine. Immediately turned the engine on and got back on the freeway... back to normal for the next 2hours. This M54 never has given me any problems in the recent past...I just changed out the fuel pump in February.
Car is 22 years old...
220k on the clock.
When I started out this morning before the drive I changed the air box filter. Could this cause the hiccup?

X5Sport · Post by **X5Sport** » Sat May 30, 2026 9:12 pm

Any error codes showing?

I can’t see an air filter causing an issue unless you disturbed some wiring. Given it restarted fine and drove on without a repeat is more puzzling.

GT456! · Post by **GT456!** » Sat May 30, 2026 9:25 pm

X5Sport wrote: Sat May 30, 2026 9:12 pm Any error codes showing?

I can’t see an air filter causing an issue unless you disturbed some wiring. Given it restarted fine and drove on without a repeat is more puzzling.

My sentiment exactly

!
Thought I'd run it past you...I'll monitor from here on. "Unless you disturbed some wiring"
I did disconnect the maf sensor but of course I reconnected it.
Thanks for the response

X5Sport · Post by **X5Sport** » Sun May 31, 2026 4:27 pm

MAF would be a likely candidate as no air means no acceleration. Might be worth having a look at the pins in the connector to see if they are clean.

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