[miami m3]

so wierd issue number 10,001

every once in a while, while driving at say 60-70 mph, i will be going along nice and smooth when i feel like the engine is stuttering -- there are no lights, warnings or error codes -- and the RPMs do not fluctuate at all

the best way to describe it is that it feels like the car is going to stall (no bucking bronco) - but a very light stutter -- actually feels more like in the drivetrain somewhere than in the engine itself -- my initial reaction is to give it "gas" to overcome -- it happens infrequently

although, it usually happens everytime i exit the highway on a particular left sweeping curve -- im thinkink a couple of things

1) my rotors are nearly worn down
2) my tires could use a bit more tread on them
3) my spark plugs need changing
4) my fuel filter probably needs changing (dont know when its recommended, but pretty sure it hasnt been changed in the last 30k miles)

can this be some DSC or traction control issue -- although I dont see the DSC warning light or anything for that matter

my S/A initial thought was bad fuel pump -- but he said the tell tale sign is difficulty starting which I do not have



any thoughts ? anyone experience something like this ?
im hoping its not the transmission (there are no rough shifts or tranny errors)

 

[mcm]

I wouldn't be surprised if it was one of the O2 sensors - might be telling the engine the wrong mix of fuel/air/timing etc given the RPM's (especially when exiting the highway and the engine is downshifting) Good luck.

 

[Moto One]

Could be the rubber hoses (EGR?) at the back of the manifold may be rotting out letting air leak in... Loose coil pac... forgot to release E brake... (one that I have done).

Mark.

 

[miami m3]

would O2 sensors be covered by that extended warranty on the cats or are they unrelated? on my M3, the cats are located in the headers along with the O2 sensors - not sure of the set up on the RR

i am going to have my spark plugs changed, that should take care of any loose coil packs since they need to taken off and put back on right?

 

[mcm]

would O2 sensors be covered by that extended warranty on the cats or are they unrelated? on my M3, the cats are located in the headers along with the O2 sensors - not sure of the set up on the RR

i am going to have my spark plugs changed, that should take care of any loose coil packs since they need to taken off and put back on right?

I dont know your year or miles but my money is still on the o2 sensors but the EGR hoses are ag ood bet as well - given your miles/year they might have turned to mush already. they might be covered so go back and read what is excluded from coverage. The plugs shouldnt have anythign to do with it given the symptoms you describe. Go to an indpenedant shop if possible and see if they can check the EGR hoses and then the o2 sensors in that order and i think youll be all set.

 

[miami m3]

would O2 sensors be covered by that extended warranty on the cats or are they unrelated? on my M3, the cats are located in the headers along with the O2 sensors - not sure of the set up on the RR

i am going to have my spark plugs changed, that should take care of any loose coil packs since they need to taken off and put back on right?

I dont know your year or miles but my money is still on the o2 sensors but the EGR hoses are ag ood bet as well - given your miles/year they might have turned to mush already. they might be covered so go back and read what is excluded from coverage. The plugs shouldnt have anythign to do with it given the symptoms you describe. Go to an indpenedant shop if possible and see if they can check the EGR hoses and then the o2 sensors in that order and i think youll be all set.

 

[miami m3]

would O2 sensors be covered by that extended warranty on the cats or are they unrelated? on my M3, the cats are located in the headers along with the O2 sensors - not sure of the set up on the RR

i am going to have my spark plugs changed, that should take care of any loose coil packs since they need to taken off and put back on right?

I dont know your year or miles but my money is still on the o2 sensors but the EGR hoses are ag ood bet as well - given your miles/year they might have turned to mush already. they might be covered so go back and read what is excluded from coverage. The plugs shouldnt have anythign to do with it given the symptoms you describe. Go to an indpenedant shop if possible and see if they can check the EGR hoses and then the o2 sensors in that order and i think youll be all set.

i hope you are right --- btw, its an 03 w/ 67k on the clock

 

[mcm]

its either the hoses or the o2 given those numbers - let us know

 

[miami m3]

okay guys, would it change anyone's opinion if the issue occurred more frequently when the rover is in reverse ?

also today, while driving in a right hand sweeping curve and trying to accelerate out of it, it starting stuttering so much that the SES light came on and off - it flickered on and off for a good 10 seconds and then turned off

i know, i know, i need to bring it in but I just moved yesterday and I have virtually no time

 

[miami m3]

2 coil packs were shot - causing the engine to misfire

but before i found this out, one lovely indy shop that specializes in nothing but Land Rovers told me i needed a new engine -- that there was no compression in 2 of the cylinders and that most likely the head and block were shot - un-fuking-believable the stress i've been under for the past two weeks mulling this over