Doubt it, the coolant sensor just ups the revs at idle, glow plugs stay on longer and the engine runs in cold settings making it a bit noisier. Wont affect limp mode, that's a boost problem anywhere from the maf to the inlet manifold and anything in between.
Hmmm... When I was reading here about what causes limp-home mode, it said that sensors reading wrong can cause it. It says to check the computer for codes and fix those and this can possibly fix the limp-home mode. The only code I'm getting at the moment is the Engine Coolant Temperature Sensor code that says it's reading too much voltage, or something to that effect. Sounded like that would qualify as the cause of the limp-home mode. I'm a little bummed now... I didn't want to spend more money on this car before I sell it.
So, you say it's a boost problem.
- May I ask how sure you are of that diagnosis?
- Also, what would you say are the biggest causes to check first?
- By the way, the MAF was replaced less than a month ago. I assume that's not it, but the previous owner did say that there was about three hesitations/skips that felt like a gas engine missing while driving on the highway right after he had the MAF changed. Is it possible the new MAF is bad and causing the problem, or would you check elsewhere for the problem?
- Finally, what would you say is the best way to diagnose the problem quickly to minimize time and cost?
Thanks so much!
- Brian