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My truck has been eating MAP sensors lately. I can't remeber how or when the the first of the last 3 failed but it seems to me it happened after another repair. This last one was working when I parked the truck Friday and replaced the master cylinder. Get that done and start the truck and the MAP is not working, complete with another p0237 code. No readingmfrom it on the scan gauge. The previous one failed when the VP went over Thanksgiving.  

I bought a couple cheap a member here found as a spare. 15 bucks so I had little faith in it working and it did not. The odd thingmI found on the truck was that I apparently some where in the past have swapped my IAT and MAP locations. The Ist was just behind the filter canister and the MAP was back behind there where the IAT should be. Dont know when or how I did this but tjats where they were. Since they were all the same part I figured the part was faulty from Oriellys. 

20200907_211414.jpg.f74ca3aa16d98a1d00c21123e54b3feb.jpg

This is the offending part. This one was inder warranty and they replacedmfor free. The good thing since the part had doubled in price from $100 to $200. Makes me wonder if they are replacing  them.

My question would be is there something in the IAT area that would eat the MAP sensors? I dont know how I reversed them but it was most evidently me.

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10 hours ago, dripley said:

My question would be is there something in the IAT area that would eat the MAP sensors?

 

No. Different 5 volt circuit. IAT only controls engine timing as far as I figured out. Then I would have to ask didn't you follow the crowd and buy a "Cummins MAP sensors" being that sensor is "The highest Quality" which I know it isn't and not produced directly by Cummins either. 

 

So what code did the old sensor pop

10 hours ago, dripley said:

The Ist was just behind the filter canister and the MAP was back behind there where the IAT should be. Dont know when or how I did this but tjats where they were. Since they were all the same part I figured the part was faulty from Oriellys. 

 

Always been the MAP is just behind the fuel filter. The IAT shuold be all the way at the very end of the intake manifold back by #6.

 

Where is the map sensor and data link???? - Dodge Diesel - Diesel Truck  Resource Forums

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39 minutes ago, Mopar1973Man said:

No. Different 5 volt circuit. IAT only controls engine timing as far as I figured out. Then I would have to ask didn't you follow the crowd and buy a "Cummins MAP sensors" being that sensor is "The highest Quality" which I know it isn't and not produced directly by Cummins either. 

No. I bought the one in the picture by Standsrd. It was $100 when l bought it back last Thanksgiving.  It's now $200. It was the price that originally drew me to it plus l have used other Standard products with great succes.  I also a few months back for $15. It did not either.

Popped a 237 code.

43 minutes ago, Mopar1973Man said:

Always been the MAP is just behind the fuel filter. The IAT shuold be all the way at the very end of the intake manifold back by #6.

 

Yeah l know. Dont have clue when l could have reversed them but evidently I did. Dont remeber noticing last time l swapped one.

 

Now for the good part or maybe the not so bright part.:doh::doh::doh::doh:

Put the new sensor in and same problem. So now l figure its wiring problem. I figured maybe in the adapter pigtail. So get under the and umplug the harness. Disconnected the Comp connection and thats when my brain clicked and l remembered I had to disconnect the comp to remove the knee bolster. :doh::doh:. Reconnected the Comp and all is well. The old, new and $15 cheapie work just fine. Left the cheap one in to see how it does. Sure glad I did not have pay another $200 for one. 

I also figured the above paradraph was duly deserving of quadruple dumbass and threw another double for good. I am definitely not MAP sensor poor now.

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I think my truck just got insulted. I will go out and ask her later.

I'll have you know she gets only the best genuine parts, as this label will attest to.

20200909_214638.jpg.ac7f7a49d75d7bea5e52e3051dba61f1.jpg

I like the candy bars.

 

Edited by dripley
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