At this rate, this vehicle has no chance.
Warm Start Problems
- Thread starter mcsc1
- Start date
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Yeh I kinda thought you should just replace all them at once though they may be fresh my dad has had the vehicle for a lil.
It’s not a riding mower.. it needs 8 plugs! WTH??!
Then, as the owner, you get to tell the tech what you want done and he/she can say, yes or no, and then you decide if you have them work on it at all.
and if one plug is bad there is usualy a reason why, bad injector, coil, something internal, etc.
Starting back at this thread. Replaced the one injector believed to be bad. Did not fix the issue. Took it to a specialist that does automotive electric and they’re unable to see enough live data in the few seconds it acts up to give me an answer and I can’t leave it.
My thought was maybe the computer thinks it’s losing rail pressure, when in fact it is not. This makes it think it needs more and floods it when starting.
My thought was maybe the computer thinks it’s losing rail pressure, when in fact it is not. This makes it think it needs more and floods it when starting.
mattbta
Full Access Member
Hail Mary, but does it act like this? (Vid taken about 20 minutes after getting home - still warm):
Pretty much. Sometimes it will catch on first crank and sputter and then run. Second crank always cranks right up.
mattbta
Full Access Member
Is it still on the factory camshaft position sensor or an aftermarket replacement? Mine did like in the video, or as you said sometimes catch, sputter, then run with an aftermarket CMP sensor. Put an OEM one back in and not a problem since. I drug my feet on swapping, even did a fuel pump and pressure regulator despite knowing aftermarket sensors are garbage in these. At least I've got new parts on the fuel system now. LOL.
I’m pretty sure it’s the factory sensor but I’m not sure. I’m not the original owner. Seems like a pita to change too.
Would yours smell like fuel when you tried cranking like in the video?
mattbta
Full Access Member
I never smelled for anything after a first crank failure. But mine runs pig rich (separate issue i'm looking into) so the garage smells heavily after starting in open loop.
mikez71
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coolant sensor readings normal?
Ok. Last question hopefully….I have a sensor on order.
If you put the pedal down for “clear flood mode” would it crank right up?
mattbta
Full Access Member
No. That's the oddball, here.
Just throwing it out there so please someone chime in.
What about the fuel pressure sensor on the fuel line under driver side? What I read states it feeds the ecm the info for pulse width and cycle and all that. Scanner has shown rail pressure dropping where mechanical gauge shows 40 something psi.
So if the pressure sensor was faulty, could it be signaling low rail pressure and actually over fueling on start?
Edit: got a new fuel pressure sensor and it changed nothing. Trying the cam sensor tomorrow. After that I’ll prob drive it like it is and say screw it. As embarrassing and infuriating as it is I’m left with no ideas except possible bad injector(s) or pump once again.
What about the fuel pressure sensor on the fuel line under driver side? What I read states it feeds the ecm the info for pulse width and cycle and all that. Scanner has shown rail pressure dropping where mechanical gauge shows 40 something psi.
So if the pressure sensor was faulty, could it be signaling low rail pressure and actually over fueling on start?
Edit: got a new fuel pressure sensor and it changed nothing. Trying the cam sensor tomorrow. After that I’ll prob drive it like it is and say screw it. As embarrassing and infuriating as it is I’m left with no ideas except possible bad injector(s) or pump once again.
Last edited:
mattbta
Full Access Member
Thanks for following up.
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