I come in desperation ladies and gentlemen - Arctic Cat Prowler Forums: Prowler UTV Forum
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post #1 of 27 (permalink) Old 06-07-2019, 09:48 AM Thread Starter
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I come in desperation ladies and gentlemen

Good morning everyone,


I own a small atv/small engine repair shop and had a customer bring in a 2009 prowler xtz 1000. Compression check showed low compression was the culprit of the no run/start condition so we proceeded to rebuild the top end utilizing all oem equipment and all is well. unit starts up and idles without a issue. We reset all engine codes, set the tps per the manual and now were currently battling a issue with the machine running as it should as far as revving out it will only get to abour 4k rpms in high. now if we were to stop, shut the machine off, start it back up and immediately press the accelerator to the floor before the cpu has time to boot up it will run like a scalded dog.



we noticed that when we first put the machine back together a E would show up on the gear position indicator and we adjusted the cable and all seem to be as it should as far as the shifter adjustment goes. we had reset all codes, cpu shows zero codes and tps is adjusted properly.
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post #2 of 27 (permalink) Old 06-07-2019, 10:48 AM
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Quote:
Originally Posted by Garrett Braddy View Post
Good morning everyone,


I own a small atv/small engine repair shop and had a customer bring in a 2009 prowler xtz 1000. Compression check showed low compression was the culprit of the no run/start condition so we proceeded to rebuild the top end utilizing all oem equipment and all is well. unit starts up and idles without a issue. We reset all engine codes, set the tps per the manual and now were currently battling a issue with the machine running as it should as far as revving out it will only get to abour 4k rpms in high. now if we were to stop, shut the machine off, start it back up and immediately press the accelerator to the floor before the cpu has time to boot up it will run like a scalded dog.



we noticed that when we first put the machine back together a E would show up on the gear position indicator and we adjusted the cable and all seem to be as it should as far as the shifter adjustment goes. we had reset all codes, cpu shows zero codes and tps is adjusted properly.
sorry I can't help even though I have the same machine , the only issue I've had was the decompression set-up where it acted like a dead cylinder ... but otherwise I've never had a lick of issues with mine .. when you first started the conversation I thought of mine but sounds like not further into the conversation. MY best GUESS is cpu but have no basis to make the thought except your final statement about by passing on startup assuming it's in neutral then.

welcome to the site though ... hold on as there are some very smart fellows who might chime in.
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name is Gary or hey you if ya forget

2009 Prowler XTZ , couple things added here and there
'83 CJ7 / SBC + whole lot added here and there
'01 Dodge / Cummins / Dually, a ton of stuff added here and there

INSTRUCTIONS FOR THE NEWBIES ...
1. Bring in a good load of firewood for the pit
2. start the morning coffee , strong but not burnt / boiled down , IMPORTANT start it early as many of us old farts get up early !!
3. sit a spell and swap some lies with the best of us
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post #3 of 27 (permalink) Old 06-07-2019, 12:12 PM Thread Starter
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I have verified spark on both cylinders and verified both fuel Injectors are spraying. Most of my business revolves around polaris, Honda and Kawasaki and I don’t have quite the experience that I should dealing with arctic cats. I’m leaning towards maybe a Ecu problem at this point because everything else tells me the thing should run. And the fact that I can start it up and run wide open before the dash completely loads tells me that it’s not a fuel pump problem, injector problem or a spark/coil problem.
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post #4 of 27 (permalink) Old 06-09-2019, 03:51 AM
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Does it run and / or sound like it is hitting a rev limiter ? Try holding the override switch for the reverse and see if that does anything.



Tim

2010 A/C XTZ with some "Stuff" SOLD
But still here everyday to contribute to the cause
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post #5 of 27 (permalink) Old 06-09-2019, 08:16 AM
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Welcome Garrett! Someone will chime in with the solution! Other than the "E" error code did anything else show?

2009 700EFI XTX, , AC Winch, 2010 Dust Shield EPI Sport Utility Clutch Kit , Street Legal, Cage chopped 2 ", Aluminum Diamond Plate Trim, Relocated Factory Bladders with covers, 5 Pt. Harness installed, Bed Tiedown System, Scat Pro-Car Seats, Secondary Battery installed, Oil Pressure, Oil/CVT Temperature, Volt Meter & Water Temp Gauges installed with Dash Plate, Bighorns, ITP Black 212 Wheels. Tonneau cover. 750 Big Bore Kit, Web Cam, and Rocker Arms.

Either - Dick or RD
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post #6 of 27 (permalink) Old 06-09-2019, 06:26 PM Thread Starter
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No sir, absolutely nothing. It had a plethora of codes the first time it started up after the rebuild. I cleared all the codes and nothing else had returned. TPS is set in the middle.

I’m going to check fuel pressure when I get back to the shop Monday to get a definite number and to verify pressure isn’t falling off in the upper rpm range. It honesty feels like it’s running on one cylinder, lacks any power at all. The best way to describe it is a brute force when in limp mode.

The hardest thing to understand is the fact that you can start it and immediately floor it and it runs flat out awesome until you slow back down or let your foot off the pedal then it goes back to running 4200-4500 rpms
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post #7 of 27 (permalink) Old 06-10-2019, 04:29 AM
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I would say either a bad spark plug or the compression release on the front cylinder. I recently had a generator that would fire right up and be fine then 30 seconds later due to the heat loose spark and drop that cylinder. Then 1 minuet later refire and the same process all over again. 8 dollars in plugs cured a 2k replacement generator.


Tim



Tim

2010 A/C XTZ with some "Stuff" SOLD
But still here everyday to contribute to the cause
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post #8 of 27 (permalink) Old 06-10-2019, 08:16 AM
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Th only help I got for you, is the spark plug wires. I was having a problem with it running on 1 cylinder sometimes. After all else failed, I replaced the wire and plugs, but not the coil.
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2012 XTZ
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post #9 of 27 (permalink) Old 06-11-2019, 08:41 AM
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FYI I ordered NKG wire and boot, I don't think AC sells just the wire and boot.

2012 XTZ
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post #10 of 27 (permalink) Old 06-11-2019, 10:52 AM Thread Starter
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Thanks guys.

As of this morning I have swapped front and rear injectors, no improvement. I have swapped front and rear coils with wires and have not shown any improvement or change. I have replaced the spark plugs with ngk plugs and both are getting spark while turning over. Both injectors are spraying fuel but at idle if you pull the rear cylinder plug wire it does not change the way it runs. If you place the plug wire back onto the rear cylinder and remove the front plug wire the engine dies.
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