Don't forget to replace / clean your MAP Sensor (EcoDiesel) every 30k - 50k miles

NMH_94 · May 11, 2025

I recently experienced a slight (but noticeable) loss of power, something I knew to be a common symptom of a gunked up MAP sensor, which happens to every modern diesel with an intact EGR system. I just replaced my MAP sensor at about 42.5k miles:

Jeep Wrangler JL Don't forget to replace / clean your MAP Sensor (EcoDiesel) every 30k - 50k miles 39dac633-3b20-4b54-88a2-6fe452e85f58~1

Immediately noticed my power was more or less back to normal on my first drive with the new sensor. Everyone should make cleaning or replacing these every 30k - 50k miles part of their maintenance schedule. In case you don't know how, Trail to Void recently uploaded a tutorial video:

Hercules · May 11, 2025

I as it just on normal acceleration you felt a sluggish power or was it a sloppy/slippy shifts

NMH_94 · May 11, 2025

Hercules said:
I as it just on normal acceleration you felt a sluggish power or was it a sloppy/slippy shifts

A little more sluggish on normal acceleration. Had to get more into the peddle than I used to. But replacing the MAP sensor seems to have brought things back to normal power wise

Hercules · May 11, 2025

NMH_94 said:
A little more sluggish on normal acceleration. Had to get more into the peddle than I used to. But replacing the MAP sensor seems to have brought things back to normal power wise

Thanks. I’ll have to watch the vid and take a look. I’m at 65k miles, probably due.

NMH_94 · May 11, 2025

Hercules said:
Thanks. I’ll have to watch the vid and take a look. I’m at 65k miles, probably due.

Definitely recommend

2019JLUS · May 11, 2025

thanks

BDinTX · May 12, 2025

Funny timing on this. The MAP sensor just failed on my Dads Ford Explorer. It’s the 3.5L eco boost gas engine and had a little gunk on it. Searching for solutions, cleaning the sensor was a frequent recommendation. So this isn’t unique to Jeep or even diesel.

Deleted User 38384 · May 12, 2025

NMH_94 said:
I recently experienced a slight (but noticeable) loss of power, something I knew to be a common symptom of a gunked up MAP sensor, which happens to every modern diesel with an intact EGR system. I just replaced my MAP sensor at about 42.5k miles:

Immediately noticed my power was more or less back to normal on my first drive with the new sensor. Everyone should make cleaning or replacing these every 30k - 50k miles part of their maintenance schedule. In case you don't know how, Trail to Void recently uploaded a tutorial video:

Define "intact EGR system"???

Jeep Wrangler JL Don't forget to replace / clean your MAP Sensor (EcoDiesel) every 30k - 50k miles 1000011055

azbobver · May 12, 2025

P/N ?

NMH_94 · May 12, 2025

BDinTX said:
Funny timing on this. The MAP sensor just failed on my Dads Ford Explorer. It’s the 3.5L eco boost gas engine and had a little gunk on it. Searching for solutions, cleaning the sensor was a frequent recommendation. So this isn’t unique to Jeep or even diesel.

That's interesting! Is the 3.5 eco boost direct injected? If so, I wonder if that would contribute to carbon build-up in the intake manifold in a gasser

NMH_94 · May 12, 2025

azbobver said:
P/N ?

It's MOPAR 68490034AA. I bought mine here:

https://www.mymoparparts.com/oem-parts/mopar-map-sensor-68490034aa

brewski · May 12, 2025

Interesting. I just ordered a bunch of parts for maintenance... if only this was posted a couple weeks ago.
At least I haven't done the maintenance yet.

BDinTX · May 13, 2025

NMH_94 said:
That's interesting! Is the 3.5 eco boost direct injected? If so, I wonder if that would contribute to carbon build-up in the intake manifold in a gasser

I believe it is DI, there was only a little bit of gunk on it, nothing like in that video though. It had a slight smell of fuel or oil but was guessing that’s from PCV ??? Just guessing… didn’t think manifold had fuel in it or EGR.

NMH_94 · May 13, 2025

brewski said:
Interesting. I just ordered a bunch of parts for maintenance... if only this was posted a couple weeks ago.
At least I haven't done the maintenance yet.

You can choose to clean the MAP sensor rather than replace it! It's a cheaper option, although I have no expertise to say whether it's equally effective to replacing the MAP sensor. I just went the replacement route because a new sensor isn't too expensive and wanted to play it safe

driventoadventure · May 18, 2025

NMH_94 said:
....which happens to every modern diesel with an intact EGR system.

To be fair, it's not the the EGR system which is the root cause of this issue, but that the PCV allows oil into the intake to mix with the soot and enable the opportunity for it to stick to surfaces. If there was a catch can, this problem (and any other cooking issue with the EGR system) would probably not exist.

Edited because posting from a phone sucks.

Don't forget to replace / clean your MAP Sensor (EcoDiesel) every 30k - 50k miles

NMH_94

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