[08mopram]

Hey guys, I recently had to change out my thermostat on my 08 cummins and completely forgot to reconnect the exhaust manifold pressure line. I realized my turbo was alot louder for some reason and finally figured out the problem. My question is, what is this lines purpose? And is it bad to leave it off? I didn't throw any codes either.

 

[Villa Style]

Is your manifold plugged where the line attaches to it? It's fine to leave it unplugged, I left mine open when I did the 2nd gen swap.

 

[08mopram]

The manifold is not plugged where the link attaches. I just had it detached from the thermostat housing. Is the purpose for this line just to disburse heat into the coolant system?

 

[hondarancher4435]

It is an exhaust back pressure sensor see the sensor in the thermostat housing that the line leads too should not be disconnected. Doubt it did any harm but clean the line out they get full of soot and hook it back up


Sent from AutoGuide.com App

 

[08mopram]

OK. I hooked it back up. Does it matter if I have the egr delete or not?

 

[Villa Style]

No it shouldn't matter.

 

[SomdCTD]

not to thread jack but op how hard was the t-stat change out? I'm getting ready to do one on my truck in a few days.

 

[08mopram]

Not hard at all. All you need is a pair of chanel locks, a 5/16 socket with ratchet and a 12mm box end wrench. 15 minutes. Might want to add some rtv to help seal as well.