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I have a 2007 H3 with approximately 150k miles, recently developed a strange intermittent long crank & stumble and sometimes crank no start, only happens after the engine reached operational temp and I let it sit for 20-30min while I'm at a store or something. Cold start is fine and immediate...

Curious if you ever found the solution, mine is doing the exact same thing. I've replaced plugs, coils, injectors, cam sensors, checked fuel pressure and it's within spec. AI seems to suggest EVAP purge valve is leaking, not enough to set a code but just enough to hot soak and flood the engine...

Got the bypass cooler mounted, stopped short because my flaring tool sucks. Any suggestions on flaring these lines? Some of the write ups I saw seemed to have no issues double flaring.

Yes that's definitely a possibility, hose collapsing and restricting flow. Wasn't mentioned in this particular thread as a possibility. My hoses are brand new and were observed @ 2500k-3000k rpm range to rule out that possibility but it did cross my mind. I think it was even mentioned somewhere...

Hate to keep bumping this to the top, but figured you guys want to hear the solution to this madness. Drilling a small hole in the t-stat helped equalize the temp on cold engine. Coolant temp no longer climbs way up before coming back down. Engine is also running much cooler now that the...

For those of you with the inline t-stat at the upper hose, do you notice your temp climbing up on a cold engine before suddenly dropping?

Makes sense, I figured that could be the case. I haven't pulled the T-stat since the install, but made sure the jiggle/bypass valve was at 12 o-clock to allow any air bubbles to pass. I have heard of people drilling those out in certain applications, maybe worth doing. I don't think its a...

Definitely will, thank you for the suggestion. I thought it might be just the normal slop that others have experienced, it only happens from coasting and when you push the gas pedal. Here's something new I've noticed today after installing the inline t-stat. On a cold engine, temperature will...

Good point, when I started this journey it was higher up to 230F especially sitting in traffic. Adding a top seal and bottom seal (the flap that hangs down from the radiator and tucks back under the skid plate) brought temperatures down. What about transmission running at 235F, is that normal? I...

Thank you, I do have some questions. Posting a thread in H3 section. Please follow.