Range Rovers Forum banner

Rough idle on 2010 range rover sport supercharged

12K views 6 replies 4 participants last post by  knalex01  
#1 ·
So I just bought a certified 2010 Range rover sport supercharged. Anytime I slow down for a stoplight I can feel the engine miss a little... There is a slight shaking. The check engine light came on so I had the dealer check it out when they were doing different warranty work for me. The did a fuel system decarb, fuel induction service, and replaced hose for blow off valve to supercharger. They turned the light off but I can still feel the car shake any time it is stopped... Any ideas what else would be causing this? Spark plugs? Ignition wires?

Let me know! Hopefully some other things I can try myself before letting the dealer take more of my money... (Decarb service wasn't under warranty and wasn't cheap...)
 
#2 ·
Codes thrown were: 47400 2.00 has p0316, p0308, p0302, p03000.

I believe those are are misfire codes


Just read a thread where the guy was having the same issue and his dealership replaced 4 injectors for him but he was still having a shaking feeling after... Maybe some s/c 5.0 are just rough running? Idk...
 
#6 ·
Bump, I know this an older thread but I'm having this issue.

Before anyone asks, yes the MAFs, throttle body, are clean w/ new air filters. I just did the timing job and even cleaned my valves. In other words, this thing is like new (even though its got 73K). I have even have new fuel pumps (low and high).

This seems to be a common issue, especially on supercharged vehicles. Hoping someone has an idea.
 
#7 ·