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View Full Version : MAP Sensor Replacement - USE CARE!!


JACKAL
01-30-2021, 01:45 PM
I’ve been getting an intermittent P0240 code which can be related to the MAP sensor. My code was for sensor B, which I believe to be the driver side cylinder bank. I thought as a simple means of checking this, I would just swap it with the passenger side MAP sensor and see if the code followed. At that point I could replace the sensor. I am guessing these are the original sensors and perhaps age and temperature have weakened the material but my 5 minute swap turned into a much bigger job than I planned as the O-ring and cage broke off the sensor body and lodged in the supercharger. Now I could possibly have dislodged the broken part of sensor and O-ring without removing the supercharger, but I did not want to risk pushing the parts in while I was trying to remove them and dropping something into the intake manifold. I’m currently waiting on new sensors and intake gaskets, but the nice thing of this is that I had a chance to see how much my water-meth kit has improved the cleanliness of my intake.

Below are some pictures of my intake valves from the last time I had the supercharger off when I had an intercooler leak, and I will post pictures of how they look now tomorrow when I get my borescope, but I can tell you there is a phenomenal improvement. Just look at the intake of the supercharger:

BROKEN MAP SENSOR:
https://uploads.tapatalk-cdn.com/20210130/e05e6cd56ea43685d97faa88c5b3fc3f.jpg

INTAKE VALVES BEFORE WATER-METH KIT (AND AFTER INTERCOOLER LEAK)
https://uploads.tapatalk-cdn.com/20210130/f0478e0f961e618125ee9ddb3b1deec9.jpg

https://uploads.tapatalk-cdn.com/20210130/91b1d87ee15cbafc4a159780cab4ae62.jpg

SUPERCHARGER INLET AFTER WATER METH INJECTION
For those wondering what is so special about this, the inlet is typically pretty oily and dirty looking
https://uploads.tapatalk-cdn.com/20210130/6241fbf738f31abdf679c84d2e26d3da.jpg

*More pictures of intake valves coming soon for comparison to the nasty pics above*
INTAKE VALVES AFTER WATER METH INJECTION
https://uploads.tapatalk-cdn.com/20210201/3a7c399f83813663350270678e27bed9.jpg

https://uploads.tapatalk-cdn.com/20210202/a08096f92ccff97e91e1a44361f4b64a.jpg
https://uploads.tapatalk-cdn.com/20210202/6b94a158dcebc31ddfe0ade4170a5445.jpg
https://uploads.tapatalk-cdn.com/20210202/584982b6c5258040eaeaaff3a14c0348.jpg
coop3422
02-01-2021, 12:45 PM
I got this code a couple months back and bought all 3 new MAP sensors. Car still ran well, cleared the code and it's never come back. Because of that, and this, I haven't bothered to install them. Let sleeping dogs lie lol.
JACKAL
02-01-2021, 03:16 PM
I got this code a couple months back and bought all 3 new MAP sensors. Car still ran well, cleared the code and it's never come back. Because of that, and this, I haven't bothered to install them. Let sleeping dogs lie lol.

lol, after that damn sensor snapped off I was really cursing myself and wishing I had just dealt with the occasional annoyance of clearing the code. But it did give me a chance to see how the water meth has helped clean up my valves so that was a minor silver lining.


Sent from my iPhone using Tapatalk
djn876
02-01-2021, 04:45 PM
How long between the photos for the water meth to clean everything off? Looks pretty good!

Sent from my SM-G988U using Audizine Forum mobile app (http://r.tapatalk.com/byo?rid=87676)
JACKAL
02-01-2021, 05:49 PM
How long between the photos for the water meth to clean everything off? Looks pretty good!

Sent from my SM-G988U using Audizine Forum mobile app (http://r.tapatalk.com/byo?rid=87676)

I’ve had kit installed for about 10 months and since I installed it, I’ve gone through about 7 gallons of 50/50 water meth.