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Newbie here. Need help installing a AEM temperature gauge engine bay sensor mount

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2.8K views 24 replies 12 participants last post by  TomAce001  
#1 ·
Hello all. Need some help from the experienced Challenger owners. Just purchased AEM temperature gauge. No issues installing the gauge inside the gauge pod and wiring it up. When it comes to installing the sensor, I was able to run the sensor through the firewall and into the engine bay. I have no idea where the sensor gets tied into. It’s a brass water fitting. I can’t seem to find anything whatsoever online or on YouTube that can show me how or where this sensor gets installed two. Please help. It’s frustrating, lol
 
#2 ·
Welcome from Alabama. New to Mopar so no help here. Someone will chime in. Good luck!
 
#3 ·
Welcome from AZ, it would be helpful if we knew what you are driving, year, model, etc.
 
#4 ·
Hello all. I have a 2020 Dodge Challenger SXT Plus. I didn’t have any issues wiring up the gauge, to my pillar gauge pod, I just don’t have any idea where the engine bay water temp sensor needs to be installed at. Absolutely no online videos, that I can find on YouTube, or anything else, ugh…😑
 
#10 ·
Thank you. The engine bay pix, you attached, provides me with a much greater chance of locating the cooling temp sensor location🤙 Much appreciated. When I had installed my AEM wideband AFR gauge w/O2 sensor, I had to weld a bung for the sensor. Didn’t realize this, until I removed one of the factory O2 sensors and left the original O2 sensor unplugged. I kept getting an error code b/c of the unplugged sensor. Used my obd2, to clear codes, on a daily basis until I realized I needed to plug the factory sensor back in. Problem solved. Any idea if this is going to happen again, once I unplug the factory coolant sensor and install the AEM sensor with its own wire harness. Once the factory sensor wiring harness is unplugged for the new AEM, am I going to get engine warnings again? Sorry for the long message

Thanks
 
#12 ·
Thanks for the great and detailed message. I don’t like messing with the PCM as you mentioned I might void out my warranty. Don’t need that to happen. I will probably just create a y-harness, which will allow the factory wire harness and the aftermarket AEM wire harness, that way, it doesn’t create a fault code, where I would have to use my obd2 code reader and erase codes, every time it comes up

Thanks 🤙
 
#13 ·
Welcome from Eastern North Carolina. The Z is the place to be!
 
#14 ·
welcome from ny
 
#16 ·
If possible, put a "T" in where the sensor goes and have them both connected. Then no worries.
 
#18 ·
Welcome from Phoenix!
 
#25 ·
Thanks. I’m not worried about messing with the wire harness or splicing into it and making it look clean. After thinking about it, that would be my best option, to spice into it. Not worried about buying out the vehicles warranty. Won’t happened, 😂