Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Hey there Jimmy! Just wanted to chime in as I have an identical long crank issue on my '11 RRS.
Went through the usual diagnostics from various shops (LPFP, HPFP, timing, plugs, etc).
Finally a shop discovered that while long crank was occurring, there was no spark.
Lived with the long crank for nearly 10,000 miles, then suddenly during a hot day while coasting down hill the engine started running rough and I had no acceleration. Pulled off, turned off the car and no codes and restarted just fine.
Month later and I discovered that this poor running is caused by the charging voltage dropping in the low 12s (sometimes even 11.9!) in hot weather. Then finally through lots of log keeping, I discovered that on days where the charging system behaves (13+v) there is no long crank. Battery resting voltage before a long crank is 12.1-12.3v (Not great but I figured not bad). When starting voltage is 12.6+ no long crank. All throughout this there were no charging system faults of warning lights. No codes whatsoever.
Now this could be a coincidence, however I would assume if the coils were going out, they may require a higher input voltage. I will keep experimenting, and I promise you I feel your frustration lol.
For record, work done to try and resolve this issue so far:
- New Alternator
- New Battery
- New Plugs
- Fuel Pressure Sensor (First shop was convinced it was a fuel issue)
Can't wait to hear any discoveries you make regarding this issue! I will continue updating as well in case our rovers are plagued by the same virus.
Quick Edit: forgot to mention Crank sensor was also replaced, as well as both MAF.