I doubt it's a fuel pump problem if it's happening so often.
Probably wiring or ECU
Are you replacing the black plastic piece at bottom of pump?
I bought a used fuel line that has the green clips and installed it next to the original line
If I break a clip I just use the other line or take out the green clip

 

'tis the season for fuel pump problems or I guess never out of season. I'm going with a Kemso pump for my latest round. Haven't put it in yet so can't provide any personal experience but others around here recommended.

As you've probably learned, a misfire can come from the pump, belt, clutches, regulator, injectors, wiring, ecu, bad gas, bad valve, bad karma. I pulled my pump initially for a lean condition that turned out to be the O2 sensor, so for my current misfire I've returned the stock pump but I don't have full confidence. I need to check pressure too. My secondary clutch is looking rough so I've got a new one coming from AA so I'm going to put that on before I change pumps again. I'm trying not to do everything at one time.

As for breaking clips, I did that too. Here's a part number from NAPA so you can steal those clips off of new connectors. There was a red one that matched for me.

 

Thanks! as far as the ECU, do you recommend sending it to one of these places to get the misfire sensitivity update ? Im guessing they could also diagnose if the ECU is faulty ?

Yes I have replaced the entire pump unit several times as well. I have a box full of dead pump assemblies.

 

DesertDawg! You are my hero!! I have been searching around for a cost effective solution to replace those little green clips!!

And yes, the codes showed up when it started getting cold!

Yeah I was thinking going Kemso as well....I want something reliable.

I cant blame everything on the fuel pump, last year I drained and cleaned the tank, and it had a good amount of debris in it. I think this happened when the plastic cap , that holds the fuel pump in place, cracked, and exposed the tank. After cleaning the tank, the number of pump replacements has dropped off considerably, but the misfire codes are new.

 

Glad the clip info helps. I remember searching forever. NAPA had to order it in too.

I had a similar problem running w/o a gas cap (dumb mistake) resulting in a tank drain, wipe down, blow out the lines and professionally cleaned the injectors. One was impacted. That's been awhile ago and it was running great until this event. More recently I changed the pump (back to the stock one I had), changed the plugs and plug 2 or MAG was pretty fouled. New plugs cleared code but it came back. Did a resistance check on the plug wires which came back around 6 ohm which is good.

I'm not ready to program out the code which I'm told is too sensitive. I think ECU problems would be less likely a source but if after my clutch work, new belt, new pump then maybe...

 

Had decent luck with the Quantum fuel pump. Did you replace the filter sock while you were at it? Early models did have a problem with the plug ends for the injectors being over crimped from the factory and causing issues. If you have a decent auto shop near you they may have a injector test/cleaning station. They could check them prior to buying new ones. Not sure on the part number, but you can find the injector plug ends at most parts store as well.
Regards,

 

I also used the QFS, Quantum Fuel Systems pump from Amazon.

Did your ground wire fittings work? The ring from the stock pump was too large and a new one didn't come with the pump. I had to use a hose clamp to attach the ground.

I wasn't happy considering the price of the pump and customer service was no help.

So far, the QFS has outlasted the factory pump. 1100 miles since installing.

 

To update. I checked the fuel pressure on the rail, and it was about 56 ish. Is this normal fuel pressure at the rail ?

@Desertdawg I ordered the kit you posted, and it contains 2 red clips, both work perfectly. Thank you again for the tip!

 

Glad the clips are still available and working.

I know the fuel pressure is supposed to be 58, but I think 56 is in range, however, if it can't push 58 I wonder if it's starting to fail and not keep up under load. I don't know. Maybe some more knowledge pump people can chime in.

 

Have you guys tried the AA pump ? Im considering it - 2014-23 RZR XP 1000/2015-23 RZR 900 Fuel Pump Assembly

 

For anyone wondering, the new AA secondary, new belt and new Kemso pump went in, but I still had the misfire code. Replaced the injectors and we're back in business.

 

My update - Replacing the belt resolved the misfire codes.

I also flushed and cleaned the tank, it had debris in it. The top plastic cap on the tank had a crack in it, which was allowing dirt and water into the tank. I replaced the cap and rebuilt the pump. Its running like a champ now!