Quote:
Originally Posted by beetle6986
Removed the JB4. That didn’t help. I guess I’ll do O2 sensors next.
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Replaced the O2 sensor in bank 1. Didn't help anything.
I'm starting to wonder if the car has a blown headgasket from overheating when the water pump went out the second time (almost a year ago). The car went into limp mode with reduced power. I drove it about another 5 miles on reduced power until I parked it as it wouldn't drive anymore under its own power due to the computer limiting. It was freezing outside when this happened. The next day I started the car and drove it home. It hardly started at first. Once it did start it smoked and misfired horribly for a few minutes. Turns out the water pump mechanics didn't fail. The housing actually cracked allowing all of the coolant to leak out. Possibly it had a minor gasket leak that has slowly gotten worse.
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2008 335xi - JB5 ISO e50, VFSR catless DP, DCI, VFSR FMIC. Fuel it stage 1, VMR V710s. 407/446 rwhp/rwtq.
2004 Cobra - Basic bolt ons with a tune. 450rwhp/rwtq450. Port coming soon.
2013 X5 50i - muffler delete, xHP tune, ESS tune on the way.
2016 Mustang GT Roush Phase 2 with VMP 767 HP kit.