| Author | Message | ||
     Felix Gumbiner (Felixthecat) New Member Username: Felixthecat Post Number: 5 Registered: 02-2004 |
Hey guys, So it looks like my Disco has P1177 FMFR Correction At maximum Negative Value fault, and P0116 Engine Coolant Temp Sensor fault... Thanks to Robbie for showing me that P1177 are my LIFT (?) banks A & B running too rich. I'm not sure if I can afford an extensive diagostic and repair session at this juncture, do you think I could just sweat this one out for a while? It seems to me these two problems are electrical in nature, and won't necessarily effect engine performance or reliablility. Also, I've been driving at altitude here in Colorado and have recently begun filling the car with 87 octane (I presume the car was usually filled with lower grade). Could this be related? Perhaps the fuel sensors are having difficulty calibrating themselves in a lower O2 environment. I filled up my tank yesterday, and then the Check Engine light turned off for about 30 minutes, only to come on again... Dirty fuel filter? If it's a new fuel pump, all I have to say about FMFR is "F--- My F---ing Rover"!  Yikes, I hope the old hag didn't hear... | ||
| Geoff 93 RRC (Geoff) Senior Member Username: Geoff Post Number: 269 Registered: 11-2002 |
The coolant temp sensor can make the ECU think the engine is cold (in varying ranges) and run it too rich. Sometimes they don't send a code, just get covered in scale and don't read correctly. Not exactly sure on the LR EFI, but other engines I know send 25-30% more fuel to the cylinders under cold conditions. About $40 and 5 min to replace. | ||
| Chris Browne (Chris_browne) Senior Member Username: Chris_browne Post Number: 648 Registered: 02-2003 |
If I fill our OBD2 98 Volvo with 87 instead of 92 octane, it throws a code. Once its been filled with 92 for three to four tanks the code goes away |
