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6.7 pulsing

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Jim.smith

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My 2024 Ram 3500 6.7 w/ Aisan is pulsing under light throttle , light load. Any body having this issue ? Only has 8700 miles. This started around 3000 miles. If I let off , or increase throttle pressure it goes away.
 
Slightly more than 4,000 miles on our 2024 Ram 3500 4x4 6.7L w/ Aisin. No problems.

Exhaust brake issues?
 
When it does this , the boost pressure will flutter . 3-5# variation. Up and down rapidly.
 
Jim.smith said:
My 2024 Ram 3500 6.7 w/ Aisan is pulsing under light throttle , light load. Any body having this issue ? Only has 8700 miles. This started around 3000 miles. If I let off , or increase throttle pressure it goes away.
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Is this happening when the truck is cold / cool and is still warming up to operating temperature? Or does it happen irrespective of the engine coolant temperature?
 
Also it is somewhat sporadic. It doesn’t do it all the time , but it is becoming more frequent.
 
Jim.smith said:
If I let off , or increase throttle pressure it goes away.
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Does the symptom show up when on cruise control? Could be the Throttle Position Sensor. Maybe try some electric tuner cleaner.
 
clean the mass airflow sensor.

did this on my new 2018 fairly early on in its life. used the non chlorinated cleaner on it and never had a issue again.
 
I’ll give that a try.
I only have 9 K miles, why would it be dirty already ? Any ideas ?
Thanks for your help
 
Jim.smith said:
I’ll give that a try.
I only have 9 K miles, why would it be dirty already ? Any ideas ?
Thanks for your help
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It happens, doesn't take much. but just pull it off the tube, clean it really good and let it dry then throw it back in. mine did it and oddly enough google had the answer lol.

im assuming stock air setup? cause aftermarket oiled filters can do that as well.
 
oledirteh said:
It happens, doesn't take much. but just pull it off the tube, clean it really good and let it dry then throw it back in. mine did it and oddly enough google had the answer lol.

im assuming stock air setup? cause aftermarket oiled filters can do that as well.
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Yes, stock air setup, original filter. I’m going to change all filters next week.
 
T143 said:
Always clean MAF and MAP sensor every service.
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Recently replaced the MAF. It seems to have helped. It still isn’t right.
I’ll take a look at the MAP.
Thx
 
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