DS4 THP 200 Misfire under big load

DS4 THP 200 Misfire under big load

Author
Discussion

BigGingerBob

Original Poster:

1,813 posts

197 months

Monday 28th October 2019
quotequote all
HI,

I have a DS4 THP too. Nice, comfy and quick but it has a misfire for about 2 seconds under high load.... sometimes.

It usually happens at about 75-76 mph indicated (3k ish rpm), accelerating for an overtake but this morning, similar rpm in 2nd gear happened again when overtaking a cyclist.

Quite disconcerting really and difficult to predict. Any ideas anyone? No fault codes or warnings showing.

Bob

drdino

1,171 posts

149 months

Monday 28th October 2019
quotequote all
Original coils? Mileage? Try reading the codes using FAP from the Amazon App store.

BigGingerBob

Original Poster:

1,813 posts

197 months

Tuesday 29th October 2019
quotequote all
As far as i know original coils. It's on 94k miles

drdino

1,171 posts

149 months

Thursday 31st October 2019
quotequote all
Have you ever changed the spark plugs? Without reading any data off of it, it'd be difficult to diagnose.