• Welcome to EcoDieselRam.com We see you haven't REGISTERED yet.

    Your truck knowledge is missing!
    • Registration is FREE , all we need is your birthday and email. (We don't share ANY data with ANYONE)
    • We have tons of knowledge here for your EcoDiesel truck!
    • Post your own topics and reply to existing threads to help others out!
    • We believe in quality OVER quantity, and a family friendly place for your #EcoDiesel home!
    CLICK HERE TO REGISTER! Problems registering? Click here to contact us!

    Already registered, but need a PASSWORD RESET? CLICK HERE TO RESET YOUR PASSWORD!

diesel pre heat not coming on after tune

D

deasonbuilt

New Member
Joined
Aug 27, 2024
Messages
3
Reaction score
0
Truck Year
2018
I have a 2018 Jeep grand cherokee. It can be in the mid 20'sF the diesel preheat (glow plugs) will not activate since I deleted it. Anyone have this issue ?
 
Is it just not displaying it, or it won’t start/hard starting?
 
rough start, the glow plug symbol appears for about a second and the the diesel pre heat message doesn't appear at all. two strange things happen in 20-28 degree mornings after a warm up. About a mile down the road the engine cut out for a split second and then the diesel pre heat message came on briefly. very strange.
 
I never had a problem with the glow plugs firing but I do have the hiccup issue occasionally. Mostly if I don’t give it more than a 5 minute warmup it’ll do it when I’m boosting up the driveway hill or shortly after pulling out of the driveway under boost. Not sure if it’s an overboost situation dimming it down with the blip. I’d assume possibly when the tune was wrote, it shortened your glowplug timing. Or coincidentally your glow plug module is on the fritz.
 
They are saying it's got nothing to do with the tune. I'll have to check the glow plug module -if I can find it. Thanks for the input
 
Mine was on passenger side fender by ecm. Easy to swap
 
deasonbuilt said:
I have a 2018 Jeep grand cherokee. It can be in the mid 20'sF the diesel preheat (glow plugs) will not activate since I deleted it. Anyone have this issue ?
Click to expand...
It's fca side for the ecodiesel, they don't do a full glow plug light and preheat like a hd Truck does. Don't worry
 
jdn112011 said:
It's fca side for the ecodiesel, they don't do a full glow plug light and preheat like a hd Truck does. Don't worry
Click to expand...
He’s having issues with them not coming on and starting rough, not nessasarily an indicator issue. seems like it’s a glitch in the tune or the module is on the fritz
 
Tremper126 said:
He’s having issues with them not coming on and starting rough, not nessasarily an indicator issue. seems like it’s a glitch in the tune or the module is on the fritz
Click to expand...
"Rough" is any diesel including the ecodiesel when it's cold and deleted. Just when you have dpf it's all muffled so the rough cold start as cylinders wake up is not noticed near as much as a deleted truck
 
Tremper126 said:
He’s having issues with them not coming on and starting rough, not nessasarily an indicator issue. seems like it’s a glitch in the tune or the module is on the fritz
Click to expand...
Mindful most guys have never experienced these starting temps for their diesel's or other vehicles so things sound new
 
-30, gde, or factory tuned for that matter, there was never a "diesel preheat" message on the eco. And the glow plug light doesn't stay illuminated and cycle like Cummins or powerstroke. It's all passive and like a 5 second cycle.

So I'd put money nothing is going on
 
You must log in or register to reply here.
Back
Top