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Another no start

12K views 21 replies 7 participants last post by  Urmudder 
#1 ·
I have a '15 T4 with 1500 miles, no mods. Went to take a ride yesterday, started as normal, let it warm up for a couple minutes and while talking to my wife it shut of. Wouldn't restart. Fuel pump comes on and pumps fuel out when you turn the key on. Took the pump out and filter is clean and no debris in the tank. Tank vent valve works one way when I blow into. Has spark. Starts with starting fluid. Tried tapping on the throttle bodies to see if maybe a stuck injector and nothing. Will start for a minute once in a while then shut off. Scratching my head on this one. My dealer sucks and will just throw parts at it.
Any help would be appreciated.
 
#4 ·
It is located under the Control panel. Located to the right (passengers side) of 3 relays. Might remove it, turn it upside down, the reinstall it. While you are there the left most relay is the fuel pump relay. Might want to remove it and check for corrosion on the lugs. Reinstall. Also might want to remove and check the fuses. Reinstall them and see what happens. I have found that just the wiping action of removal-reinstall wipes away corrosion products from the mating surface of the components. Long shot, but I have had it work in the past...The info on the Vehicle Down Sensor are on page 3-59 under Fuel System (DFI) in the 2014 manual. I don't have the 2015 manual... Vehicle Down Sensor has Brown/Black, Brown/White and Yellow/Green wires attached...

The check Engine light, center light on the top of the LCD Display. IF the check engine light is on you need to test the system for the error code. Turn Ignition on, press the bottom left button for more than 2 seconds and a code will be displayed. To return to normal, turn power back off or hold button for 2 seconds...
 
#5 ·
Ok, removed all the fuses and replaced, fuses are good. Unplugged all three relays, tried a brand new one I had in the box on all three individually. loosened that massive ground wire point and cleaned and tightened back down. Unplugged and turned the roll over sensor over, I can hear the ball moving around in it. Check engine light isn't on, and couldn't get any codes out of the cluster. Grrrrrrrrr
 
#6 ·
Although new to teryx's the gas engine principle works on almost all gassers.


They need three things to work:


Fuel-Not just pressure but steady, see if you can google the flow rate and see if you can rig a cup and see how long it takes to fill x amount and compare.

Spark-Plugs sometimes are odd hence why I usually replace them a little before what the book calls for (on most not all applications), the ignition system plug wire, and igniter/coil, controller etc.

Air-Air filter is the easiest but the air intake the the throttle body, any sensors for idle control etc.

Once you've ruled those out you did good by checking fuses. now check your battery and starter. A weak battery can test good still and not turn the starter fast enough to turn over. Also check your starter and all the grounds.


Read some threads with some 09 models having bad connectors on the harness to the ECM so that would be good to check too.
 
#7 ·
Although new to teryx's the gas engine principle works on almost all gassers.


They need three things to work:


Fuel-Not just pressure but steady, see if you can google the flow rate and see if you can rig a cup and see how long it takes to fill x amount and compare.

Spark-Plugs sometimes are odd hence why I usually replace them a little before what the book calls for (on most not all applications), the ignition system plug wire, and igniter/coil, controller etc.

Air-Air filter is the easiest but the air intake the the throttle body, any sensors for idle control etc.

Once you've ruled those out you did good by checking fuses. now check your battery and starter. A weak battery can test good still and not turn the starter fast enough to turn over. Also check your starter and all the grounds.
It turns over and starts sometimes but shuts off so it's got plenty of juice. I'm going to go get plugs now.
 
#10 ·
Well I had mine completely full of fuel where it was coming out to fill spout on the fuel tank and after we got to where we were going riding it was fairly warm and I think it build up pressure in the fuel tank and did not want to start. After I got it running it never had a problem again starting.

I personally think with it that full it was building fuel pressure and pushing back towards the motor flooding it somewhat
 
#11 ·
Yeah, its bazar how the vent will allow air (and junk) in but won't allow pressure out. I ended up biting the bullet and ordered a new pump. If that's not what's wrong with it, I'll have one in stock when it does go. And if I take it to the dealer, they can't tell me it needs a $700 pump.
 
#14 ·
We don't have a low oil LEVEL sensor, but we have the low oil PRESSURE. This lights a dash light, but does not prevent you from starting or running the engine...

Hope the pump helps... And that you got an after market pump.... OEM is crazy expensive...

Bill in Spokane...
 
#21 ·
My problem

I’m having similar issues. Unable to get past 20mph, replaces fuel filter and pump, no luck with either of those fixing problem. Hard to start. I have a 2015, where and how do you check the rollover, machine down relay. Is it something that just needs reset, or replaced? This happened just out of the blue, perplexing!
 
#22 ·
I’m having similar issues. Unable to get past 20mph, replaces fuel filter and pump, no luck with either of those fixing problem. Hard to start. I have a 2015, where and how do you check the rollover, machine down relay. Is it something that just needs reset, or replaced? This happened just out of the blue, perplexing!
You need to take off the cowl panel (outer panel at the bottom of the windshield). On the passenger side, there are three relays the other sensor is the tip sensor. When I removed mine, I could hear the ball moving around, but it was still bad. The guy that fixed it had another Teryx and tried one from that.
Did you check your fuel vent also?
 
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