The 75 and ZT Owners Club Forums - View Single Post

pletevl · 6th October 2019, 08:40

Put the car on T4 yesterday. All analog sensors are reading correctly.
But, the car doesn't always pass the idle valve test. It passes every other test I do.
I replaced the iacv valve with one from my ZR and its the same. I replaced the Map / air temp sensor, just in case, and no change.
On T4 under "MISSFIRE" cylinder 1 is giving out misfires, so I changed plug and coil, same problem.!!!!
Anyone have an idea?
Would a dodgy injecter does this?
I've checked for air leaks with easy start, none found.

This is doing my head in now ��

Pete.

6th October 2019, 08:40	#12
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: 1,278 Thanks: 124 Thanked 114 Times in 93 Posts	Put the car on T4 yesterday. All analog sensors are reading correctly. But, the car doesn't always pass the idle valve test. It passes every other test I do. I replaced the iacv valve with one from my ZR and its the same. I replaced the Map / air temp sensor, just in case, and no change. On T4 under "MISSFIRE" cylinder 1 is giving out misfires, so I changed plug and coil, same problem.!!!! Anyone have an idea? Would a dodgy injecter does this? I've checked for air leaks with easy start, none found. This is doing my head in now �� Pete.