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pletevl · 9th December 2019, 13:22

Hi all,

Does anyone know why a K series engine would suddenly decide to rev up and down, from around 800 rpm and going up to around 1200 rpm, all on it's own when sat at a junction, up and down, up and down...... ?

The IACV valve was set on T4 in the summer.

Thanks.

Pete.

9th December 2019, 13:22	#1
pletevl Posted a thing or two rover 75 cdti(rhd), MG ZR(lhd), MG TF(lhd), MG TF(rhd), mini mpi (lhd), Renault megane III (awful) Join Date: Mar 2014 Location: East of France Posts: 1,282 Thanks: 124 Thanked 114 Times in 93 Posts	engine revving on it's own Hi all, Does anyone know why a K series engine would suddenly decide to rev up and down, from around 800 rpm and going up to around 1200 rpm, all on it's own when sat at a junction, up and down, up and down...... ? The IACV valve was set on T4 in the summer. Thanks. Pete.