So I've posted on this forum several times concerning my hard starting issue. I've gotten lots of helpful advice but I still can't figure out what's causing this. My Jeep is a 99 2.5l. Here is the run down. It only does it when the engine is hot. It starts right up in the morning especially if it's cooler. I've tried the insulation around the injectors to prevent heat soak and that didn't help. I'm getting the correct amount of fuel pressure and pressure does not bleed off after i shut off the engine (otherwise it wouldn't start so well in the morning). I've replaced the crankshaft position sensor and that did nothing. The starter works fine, the battery is new and holds charge well. For some reason it starts quicker if I hold the gas pedal down while cranking the engine. My thought is it is some sort of air flow issue. The air filter is not clogged. I've been inspecting all of the vacuum lines and there seem to be no leaks. If it starts faster while I'm holding the gas pedal wouldn't that mean it's because more air is being allowed into the intake?
Another opinion i had was I've heard something about the coolant temperature sensor causing similar issues. I'm loss at this point. The jeep never fails to start but this is annoying as hell. Any help would be much appreciated. Especially from you guys with 4 bangers who may have experienced something similar.
Another opinion i had was I've heard something about the coolant temperature sensor causing similar issues. I'm loss at this point. The jeep never fails to start but this is annoying as hell. Any help would be much appreciated. Especially from you guys with 4 bangers who may have experienced something similar.