Edited: Had my car in for replacement main thermostat the other day and noticed on the first proper drive after getting it back that the throttle response and acceleration is weird and jerky now. It only seems to be noticeable at motorway speeds, especially when getting up to 60-70mph. The acceleration seems very binary (in other words either on throttle or off no smoothness) and it is difficult to maintain 70mph. I get up to 2500rpm and then as soon as it gets over 2500 it feels like boost just comes on all of a sudden but is all jerky.
Just done a scan and got the following faults on the engine none of which I had prior to the car going in:
3 Faults Found:
005634 - Power Supply Terminal 30
P1602 - 002 - Voltage too Low - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 0 km
Time Indication: 0
Freeze Frame:
RPM: 0 /min
Load: 0.0 %
Speed: 0.0 km/h
Temperature: -40.0∞C
Temperature: -40.0∞C
Absolute Pres.: 0.0 mbar
Voltage: 0.000 V
000568 - Manifold Pressure / Boost Sensor (G31)
P0238 - 001 - Signal too High
Freeze Frame:
Fault Status: 01100001
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 0 km
Time Indication: 0
Freeze Frame:
RPM: 0 /min
Load: 0.0 %
Speed: 0.0 km/h
Temperature: 17.0∞C
Temperature: 18.0∞C
Absolute Pres.: 1000.0 mbar
Voltage: 12.573 V
004195 - Fuel Pressure Regulation
P1063 - 002 - Control Range Not Reached - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 97691 km
Time Indication: 0
Date: 2000.00.00
Time: 15:27:53
Freeze Frame:
RPM: 1172 /min
Load: 58.4 %
Speed: 0.0 km/h
Temperature: 10.0∞C
Temperature: 11.0∞C
Absolute Pres.: 1000.0 mbar
Voltage: 14.478 V
Readiness: 0000 0000
I did the cam follower on the weekend so presuming the fuel pressure error is left over from that as the engine was having issues on the drive home before I changed the cam follower.
Car is going back to the garage that did the thermostat on Friday as they put on a new CV boot for me in Jan which I noticed has unclipped on the wheel side and dumped grease everywhere. Was wondering is there anyway the work they did for the thermostat could be causing this jerkiness? They did mention on the phone before completing the thermostat that they would be taking not only the alternator out but also the air con compressor which I thought was weird as guides I'd seen online for main thermostat make no mention of anything other than the alternator needing to come out to get at the thermostat.
Cheers.
