When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Dodge ChargerThe Dodge Charger. The car that made its competitors shiver in the 60's is reborn in 2006 into a sleek sedan that can still send the competition home wimpering, the Dodge Charger.
Hello! decided to go all American starting this year; so when my Audi A4 lease came due, I decided to get a 2019 Dodge Charger Daytona 392. I love the car.
I've been doing some minor mods just to get my feet wet and I changed the coolant thermostat to a 185 Mishimoto as recommended in some of the forums. It's been fine for the last 200 miles or so. Yesterday, I got a check engine light with the code P0128; apparently a thermostat error. I had gone out in a hurry and, of course, accelerated rather quickly to start my errand trip.
How can I remove this light? Any help would be greatly appreciated.
Save me a trip to the dealership...
Thanks!
For a little while anyway. The computer expects the engine to get to a higher temp, when it doesn't, it will set the code. Only way to avoid that is to reinstall the stock temp 'stat, or, program the PCM for the lower temp stat.
For a little while anyway. The computer expects the engine to get to a higher temp, when it doesn't, it will set the code. Only way to avoid that is to reinstall the stock temp 'stat, or, program the PCM for the lower temp stat.
Yep. ^^. Put the stock thermostat back in or get a tune.
great way to create a sludge build up in the motor...run it with a cold stat. water is a by-product of combustion...let the engine run at the temp designed to evaporate it off...water and oil = sludge. put the factory stat in it. cold temp probably will worsen the mpg too.
great way to create a sludge build up in the motor...run it with a cold stat. water is a by-product of combustion...let the engine run at the temp designed to evaporate it off...water and oil = sludge. put the factory stat in it. cold temp probably will worsen the mpg too.
Really? Most of the mods posts I've read that actually recommend this mod say otherwise. Sludge? Mmmm...sounds plausible.
I ended up going to the local dealership. I gentleman at the service area desk offered to have a look, brought his OBD2 analyzer, plugged it in, and viola! All fixed.
yep. he just cleared the code. its a rationality code. the pcm monitors the coolant temp after a cold start...the pcm knows that with a specific run time... the coolant temp should rise to a set number...if it doesn't get there....it thinks the thermostat is stuck open.
Last edited by primem; 07-22-2019 at 10:23 AM.
Reason: spelling
great way to create a sludge build up in the motor...run it with a cold stat. water is a by-product of combustion...let the engine run at the temp designed to evaporate it off...water and oil = sludge. put the factory stat in it. cold temp probably will worsen the mpg too.
Only if the engine isn't allowed to warm up properly or too many short trips where the oil doesn't get hot enough to burn the condensation off. Have a 180 in a hemi Magnum and it generally runs in the 188-195 range anyway. Stock thermostat is 203 and engine temps in the cars can reach 220 or more. The design of those engine bays isn't really the hot ticket for shedding heat. It's a good idea, especially in the earlier cars where if the engine gets just hot enough you'll drop a seat at the drop of a hat; there's a reason 392's come with a factory oil cooler.. Either way, thermostat temp needs to be tailored to the vehicle's normal operating environment and how it's generally driven (and of course any heat producing modifications).
07-20-2019, 08:57 AM
Check engine light from new member!
