What was the reason for using the 03 turbo?

 

Yes the turbo on my 04.5 blew and the shop the dealer took the turbo too, said that it was too badly gone to rebuild. and the dealer wouldn't buy an 04.5 turbo to go on it, they would only pay for the boost fooler.

Now all the way back to Iowa I would hear a whistleing sound when i would get the turbo to kick in and on steeper grades coming from under the hood and sound by like the turbo. And then sometimes I would notice that when I would give it gas the turbo wouldn't kick in at all, what could be the cause to this?

Also the truck is throwing out code P0088, what is this and why?

And another thing I noticed is the truck only got 12.7-12.8 mpg all the way back to Iowa and on the way to Florida with the 04.5 and with a heavier load on the trailer I got 16.4-17.3mpg. People said the 03 engine should have gotten better mileage, but I didn't see that. And I really noticed the less amount of power.

The 03 engine had a build date of 11/08 I think, so its a later 03 possibly early 04 engine but is the 305hp / 555 tq engine.

Thanks for the input guys.

 

P0088 Fuel Rail Pressure Signal Is Above Max Limit

Did they use ALL the sensors from the 04.5 engine like I said or did they use the 03 sensors?

The whistling you hear could be a boost leak. Might not have gotten a hose on correctly or a clamp tight. That would account for the loss of mielage and power.

Get a boost gauge and check to see what the numbers are.

The 03 engine is not exactly right for the stock timing and injection duration from the 04.5, you will probably need a programmer capable of tuning that a little bit and possibly upgrading injector tips to compensate.

You got screwed by the delaership with that turbo. If this was warranty work they should have replaced the trubo with the correct one. If not, you will either have to source an HE351 or better to make things close to correct.

 

It wasn't a dodge dealer. It was a member on here that I purchased the engine from that said it was an 04.5 and when I get there was an 03 engine and his son's used car dealer shop did the swap for me. The engine is listed in the 3rd gen classifieds on here for sale with 20,000 miles.

Well when the engine idles the oil pressure is 40 psi cold but when warm is only 20 psi and also there is slight blow by out the oil fill cap, just white smoke and no hand moving pressure. so i assume the engine came from a roll over due to the low oil pressure.

I was thinking it was a boost leak, but shouldn't the truck smoke out the exhaust bad if there is a boost leak? I have a gauge and air adapter I have made for my 97 dodge to go on the turbo to pressurize the system. I am gonna go see if that works and if there is a leak. Thanks.

As for the sensors, they used all the 03 sensors, but he said about that 1 code coming up and that he changed that sensor out with the 04.5 sensor and it didn't make a difference.

I plan on getting gauges for the truck. Where is the best deal for a good set?

What is the stock timing on the 03 and then on the 04.5?? The 04.5 has the 3 injector event and the 03 only has 2, i was told it wouldn't make a differnce on the injectors cause the computer can't tell it has different injectors.

Also someone told me that the 04.5 should have 3 wires at the injectors, and well they only had 2 like the 03 injectors???

 

Here is the engine I bought and well, now you guys know what I actually got!!!!

https://www.dieseltruckresource.com/...t/32755/cat/10

 

All the 5.9 CR's have 2 wires on the injector, somebody was giving bad info. The injector bodies will interchange between all the 5.9 CR's.

The code indicates the rail pressure is too high. That could be a sensor problem or possibly the FCA is not adjusting fuel to the rail correctly.

If your seeing white smoke out the oil cap, not good. Sounds like it has blowby for some reason. Same with the oil pressure. Have never seen these gauges drop that far unless there was a problem.

Don't remeber the exact numbers but the 04.5+ trucks have a more retarded injection event. That can mess with th burn pattern in the cylinder and rob power. Generally people that doe this swap end up with a Smarty to reset the timing and redo the duration for a better event.

The 2 or 3 events don't make any difference in the power or driveability as it is so late in the cycle. The pilot and primary event are the key ones and the 03's have smaller holes that the the 04.5's. Coupled with the late timing that can lead to a lack of power.

Start cehcking your boots and clamps to see if they left one loose or have a ripped one. Could be the turbo is shot also. You will want to check the end play and side play in the compressor.

 

It was Joe Donnely from TDR, he does the write ups for them and some other magazines that told me that about the 2/3 wires. I will have to let him know.

What is the FCA? I am knew to these newer trucks, sorry.

I was affraid of that blow by and oil pressure. I will have to get it checked out.

Thanks for all the info, I am going to go pressurize the system now and check for a boost leak.

 

FCA is the fuel control actuator on the back of the CP-3. Its the only piece on the pump that has an electrical connection. Its responsibility is to supply fuel to the high pressure circuit of the CP-3 that builds the rail pressure. If it fails to set properly it could cause high or low rail pressure codes.

The problem with NOT swapping all the sensors is you might get one that is a little off or old or just not right for the year. If the engine has been sitting for a while the FCA might also be sticking.

Not sure aboit the wire count. Maybe it was just a mistype or misprint.