astiles357

Would a 5v system issue cause irregularities with boost from map sensor to be either working fine or at 50? Also, occasionally on startup Egt is maxed at 1800 and operates in the reverse direction (goes down on acceleration, and back up on idle). Seems like electrical funniness to me? How would one diagnose the 5V system and repair or replace it?

I have learned that the hard way. I put mine in 4low as soon as I get off pavement. I am usually pulling a 13k dump trailer though.

I didn't know that ps fluid needed changed that frequently until I read that in your another post. I am used to driving/maintaining a chevy. This Dodge is a whole other animal! Though a chevy is not going to make a million miles either. I have never seen power steering fluid so nasty. When it was puking, it was bubbly chocholate milk! Made such a huge difference after the flush. I will definitely stay up on PM's I know about.

I recently flushed power steering because it gave several signs of needing it. 1. Whinning PS pump when cold. 2. Aerated Fluid puking from PS reservoir. 3. In cold temps, steering was extra hard and when the brake pedal was pressed steering would lock up. 4. Also brake pedal was extra hard. I am pretty sure I knocked my hips out of wack standing on the brakes one morning. Power Steering flush as described by @mopar1973man on this forum has remedied all my above issues.

The pictures on rock auto don't match the description. P/N: AS370 has pictures of sensor and harness for $87, but Description says sensor only. P/N: AS370K has just picture of sensor, but description says Sensor Kit, Includes Harness for $149. Looks like Geno's Garage has both the cummins parts for $111. Don't misunderstand, I am not necessarily looking for the cheapest initial cost. Anybody experience the aftermarket sensors outlast the Cummins sensors, disregarding the $30 ebay parts?

dripley and 04Mach1, You guys are awesome! Thanks.

Just the harness from the dealer was 60 some dolars. I figured maybe buying the harness from the dealer and buying the sensor somewhere else. Unless I can get the harness somewhere else as well.

Hi Guys, I have been learning alot about my cummins from reading these forums. This is my first post, so please forgive me if this topic has been covered. Background: I finally got my quad adrenaline board replaced and I had no boost pressure. I replaced the map harness because there were a couple butt splices in the wiring and presumed that was the problem. Once I changed the harness I have a boost reading on my control pod of 48-51 pretty consistently no matter TP, speed, ect. I did some reading on here and found out some map sensors "Fail High", which seems to correspond to my issue and also gives good reason to my poor mileage 8-10 mpg. Occasionally when I start the truck up the boost starts at 0 and will go up to 20 or 21 depending on throttle, ect. But usually goes right back to 48-51 upon restart. I ordered a map sensor from Advanced Auto for $135 with a 25% online coupon and when I received it the connector was more oval shaped than the one on the truck, so I returned it. I called the dealer today and found out that they sell a Boost Sensor and a wiring harness for $370 something. The parts guy didn't know much so that is why I am here. Assumptions: 1. I am currently assuming the Map sensor is still bad even though it occationally works. 2. I am assuuming cummins has updated this sensor with a new connector style and requires the new harness to connect. Questions: 1. Is it normal for a map sensor to sometimes work and sometimes not being either/or on start condition? Or is this an electrical issue? 2. Are my assumptions correct about the new connector type and require a harness? 3. Recommendations for sensor and harness? Or old style sensor connector? Below is picture of Old sensor on the left and new sensor on the right. Thanks in advance!