When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Another adventure under the belt but my F350 has issues!
Long story short:
-Traveled down to Arizona, drove the F350 and trailered the RZR to Laughlin for the UTV World Championship.
-We had a blast. Finished 36 out of 75 people, blowing 4 belts in 7 laps. As rookies, we're still proud to have beat half the pack. We have to diagnose and solve belt issues.
Flew back up to Alaska for a week long safety meeting, and then flew back down to Phoenix to move my rig up to Idaho for storage. I'm now 22 hours closer to Alaska, with plans to drive back up in June.
Having said all of that, I have 7,500 miles on the rebuild from hell this winter. So far, so good but I haven't dialed it in yet. I'm definitely lacking power.
I am now quite certain that I have a boost leak or exhaust leak of some sort, but perhaps its on the motor side such as a sensor? I even bought and traveled down with AE, only to find that it won't install on my brand new laptop. An e-mail to AE hasn't been replied to. I pulled my charge pipes and double checked my clamps, so perhaps its on the exhaust side. I put new gaskets on with the manifolds in January, have pulled the turbo and checked mounting to the up pipes, and the up pipes are new from right before I bought the truck.
I have a Hydra, with 1023 tunes. Single shots and a GTP 38R. New HPOP, rebuilt injectors. Pulling maybe 2,500 pounds?
In 4th gear, going up any incline, the truck won't get over 18 psi of boost at full throttle. EGTs flirt with the 1250-1350 range. I also get a check engine light at times and it eventually goes away while driving. This simply can't be right.
I was able to pull codes via an old SCT tuner I have in my truck. Not quite sure which code could be relevant to my issue though. Buying AE and not having it work is a kick in the nuts, but in the blink of an eye, I'm 4,000 miles away again.
These were the codes I had at the time, although I know a few of them are obvious due to things such as a fuel bowl delete.
Just now looked these up. The only obvious one is the exhaust back pressure sensor? I have a fuel bowl delete and EBPV delete.
P0475, exhaust pressure control valve error
p0603, internal module control kam error
p0478, exhaust pressure control valve high input
p0470, exhaust back pressure sensor circuit error
p1139, water in fuel indicator
p0541 manf intake air heater circuit low
Any thoughts would be appreciated!
My truck is currently having a flatbed built and hopefully in June, I'll fly down and drive the truck back up. The RZR will undergo Baja 1000 prep.
You are right, that is not right. Right again, you have an intake or exhaust leak somewhere. You should be at least in the high 20's boost and EGT's should be 200* lower easily.
You are right, that is not right. Right again, you have an intake or exhaust leak somewhere. You should be at least in the high 20's boost and EGT's should be 200* lower easily.
At this point, the only two things I haven't replaced so far, are the ICP and the IPR. I semi wondered if I should blindly change those, but I really didn't have much time to spare.
My favorite thing about the 7.3, is that while not in working order, I can still cruise to where I need to be.
With that 38R and single shots, pulling a load you should be seeing a whole lot more than even high 20's. You have a boost leak or a fuel delivery issue.
When you get that belt figured out let me know. It has always been a problem with the RZR 1000. My son has the same problem, and his friends also. He says it's just the way it is. I say BS. They cost way to much for that to happen as often as it does. Check you plenums for leaks also. Towing I would think up hills you should be around 30 psi not 18 with your setup. Do your tunes defuel? Do you have a boost fooler? You missed the harley run this weekend.
When you get that belt figured out let me know. It has always been a problem with the RZR 1000. My son has the same problem, and his friends also. He says it's just the way it is. I say BS. They cost way to much for that to happen as often as it does. Check you plenums for leaks also. Towing I would think up hills you should be around 30 psi not 18 with your setup. Do your tunes defuel? Do you have a boost fooler? You missed the harley run this weekend.
Between my old 900 and my RMK 800s, I haven't broken a belt until this race.
I think we're looking at using a higher end tool to align the motor and transmission, we'll see. I'm new to this, but blowing a belt every 16 to 32 miles isn't right!
On the sons and friends, they burn up in the dunes. Lot of load on them under power. He's been told there isn't a stronger belt. Please keep us posted. Is this RZR a turbo? that seems to be the problem when loaded flying threw the sand. And at two hundred a pop out there just for the belt, they got ya.
On the sons and friends, they burn up in the dunes. Lot of load on them under power. He's been told there isn't a stronger belt. Please keep us posted. Is this RZR a turbo? that seems to be the problem when loaded flying threw the sand. And at two hundred a pop out there just for the belt, they got ya.
I was told by a mechanic that works on race UTVs that not breaking the belts in properly, automatically reduces the life of the belt by two fold. This is on a 1000 non turbo, but I'm pushing 30 inch tires, and a heavy long travel suspension.
4th gear on an incline? You don't hit 2000 RPM until about 70 MPH with the 3.73 rear end... if that's what you have. That was the first thought that went through my head. The second thought is the wastegate is a "dumper" when the 38R is right out of the box. I had to really spin that control rod down to get the wastegate to be more like the Little Dutch Boy, instead of the Big Bad Wolf.
RPM vs speed on my truck (ZF6 manual like OP) is as follows with stock tires and 3.73 gears.
As you know, the engine RPM has a lot to do with the level of boost and performance of the engine. You have a very simple problem, but figuring it out will be the hard part. The wastegate ideas are something worth looking into.
7yrs ive chased low boost after popping the turbo...bellows, sensors..etc. Wasnt until i changed the MAP during the winter is when i found an extra 3#. Went from 15 to 18 and this is with redline gone...
Cool ride holmes. We just got back from Barstow beating around the turbo 1000. We keep a spare belt too. Have yet to use but shes there
Looks like you fellers had fun, as Timmyboy mention look at MAP line and sensor and see if you aont got leaks there or the waste gate needs more adjustment.
04-24-2018, 03:35 PM
