I've got a 2014 R Coupe and have recently hit some hard to diagnose engine issues.
I'm just wondering if the symptoms sounds familiar to anyone...
Background:
A couple of weeks ago a did a 150 mile or so motorway trip. Almost immediately I noticed the car sounded... Different. I can't say what, but something not quite the same. It still felt fine to drive, and importantly there was no check engine light... Just sounded... Different.
On the return journey, I stopped for fuel and almost immediately afterwards I got a check engine light. It didn't sound or feel any different to the prior journey, but now had the engine light on.
I dropped it to a local garage (Jag main dealers had a month long wait time...) and they initially said there were tons (around 40) different fault codes logged. Everything from wrong fuel, to ABS failure, just lots of different things.
They said some were probably historic and may have been caused by a low or flat battery in the past, so they cleared it all and ran the car, to get a clean slate.
The car initially threw up no engine codes, despite sounding the same to me ("different"). We took it for a few short drives, everything from low revs cruising to one or two attempts to rev it out. No engine light came back on, but the car wouldn't rev to the limiter. It would get to around 5.5k rpm and then start juddering.
Eventually it came up with a fault again, this time for the catalytic converter. It also came up with a random cylinder misfire but much less often (we ran it a few times).
The Jaguar diagnostic software suggested starting with replacing the O2 sensors. Parts ordered and changed, and initially the car felt better.
We ran it for a short drive and it didn't log any codes. We then tried a few red line pulls and this time it actually reached the red line, but it felt really down on power, getting worse with each successive run.
Several pulls in second gear:
The first one felt ok, but slower than normal
The second one it pulled strong to 4.5k rpm and then it felt like the torque dropped away, like I was only at about 25% throttle.
The third, same again but this time at about 6.5k rpm it really struggled to rev the final 500rpm or so. No juddering or feeling as if it was missing, but it took ages to rev.
After that we cruised back to the garage at low rpm to re-check. Sat waiting on a roundabout it wouldn't idle properly and started juddering and felt like a misfire. It then started flashing the check engine light.
Rechecking codes at the garage it had logged a consistent misfire on cylinder 6, and also failures to the power control module.
At this point the next step is checking and replacing injectors, spark plugs, compression test, catalytic converters etc...
I'm waiting to hear back from the garage about what they find tomorrow, but I'm just wondering if anyone else has had similar symptoms and what the solution was?
I'm just wondering if the symptoms sounds familiar to anyone...
Background:
A couple of weeks ago a did a 150 mile or so motorway trip. Almost immediately I noticed the car sounded... Different. I can't say what, but something not quite the same. It still felt fine to drive, and importantly there was no check engine light... Just sounded... Different.
On the return journey, I stopped for fuel and almost immediately afterwards I got a check engine light. It didn't sound or feel any different to the prior journey, but now had the engine light on.
I dropped it to a local garage (Jag main dealers had a month long wait time...) and they initially said there were tons (around 40) different fault codes logged. Everything from wrong fuel, to ABS failure, just lots of different things.
They said some were probably historic and may have been caused by a low or flat battery in the past, so they cleared it all and ran the car, to get a clean slate.
The car initially threw up no engine codes, despite sounding the same to me ("different"). We took it for a few short drives, everything from low revs cruising to one or two attempts to rev it out. No engine light came back on, but the car wouldn't rev to the limiter. It would get to around 5.5k rpm and then start juddering.
Eventually it came up with a fault again, this time for the catalytic converter. It also came up with a random cylinder misfire but much less often (we ran it a few times).
The Jaguar diagnostic software suggested starting with replacing the O2 sensors. Parts ordered and changed, and initially the car felt better.
We ran it for a short drive and it didn't log any codes. We then tried a few red line pulls and this time it actually reached the red line, but it felt really down on power, getting worse with each successive run.
Several pulls in second gear:
The first one felt ok, but slower than normal
The second one it pulled strong to 4.5k rpm and then it felt like the torque dropped away, like I was only at about 25% throttle.
The third, same again but this time at about 6.5k rpm it really struggled to rev the final 500rpm or so. No juddering or feeling as if it was missing, but it took ages to rev.
After that we cruised back to the garage at low rpm to re-check. Sat waiting on a roundabout it wouldn't idle properly and started juddering and felt like a misfire. It then started flashing the check engine light.
Rechecking codes at the garage it had logged a consistent misfire on cylinder 6, and also failures to the power control module.
At this point the next step is checking and replacing injectors, spark plugs, compression test, catalytic converters etc...
I'm waiting to hear back from the garage about what they find tomorrow, but I'm just wondering if anyone else has had similar symptoms and what the solution was?
