I have been having fun with the initial idling of my S54. When i start the engine i get this spluttering sound (which presumably is the misfire) at idle. However, if i give it a bit of gentle throttle for 10-20 seconds or so the idle even out and the car sounds fine.
I am running native CSL software with a MAP and IAT but i have been for many years without issue.
I read the codes and got "205 Misfire Cyl 1 without Cyl Cutout".
Because the spark plugs are new NGK DCPR8EIX Iridium's and have been in the engine for a few hundred miles. I thought I would try replacing the coil pack on cylinder 1. This made no difference.
Luckily i had a spare set of fuel injectors so i got them cleaned and fitted them. It feels like i have another 100HP. So they must have been a but filthy.
It's amazing how a gradual lack of performance goes almost unnoticed. I thought my Vanos was giving up when getting an almost VTEC like response.
Sadly, the idle issue remains.
It does seem that outside temperature could be an issue. I was stranded at a friends house when i tried to leave at night. The temperature was 1 degree above freezing. The throttle coaxing would not work then. However, the next morning at 6 degrees celsius 41F. I got it to idle and then drove the 60 miles home.
Has anyone had a similar issue with their engine?
I am running native CSL software with a MAP and IAT but i have been for many years without issue.
I read the codes and got "205 Misfire Cyl 1 without Cyl Cutout".
Because the spark plugs are new NGK DCPR8EIX Iridium's and have been in the engine for a few hundred miles. I thought I would try replacing the coil pack on cylinder 1. This made no difference.
Luckily i had a spare set of fuel injectors so i got them cleaned and fitted them. It feels like i have another 100HP. So they must have been a but filthy.
It's amazing how a gradual lack of performance goes almost unnoticed. I thought my Vanos was giving up when getting an almost VTEC like response.
Sadly, the idle issue remains.
It does seem that outside temperature could be an issue. I was stranded at a friends house when i tried to leave at night. The temperature was 1 degree above freezing. The throttle coaxing would not work then. However, the next morning at 6 degrees celsius 41F. I got it to idle and then drove the 60 miles home.
Has anyone had a similar issue with their engine?
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