Sea Doo. Jet Boat. Blacktip Jetsports.2000 SeaDoo GTI won't start no beep
Riding Gear. Trailer Parts. Gift Certificates. Forum Technical Discussion Sea-Doo whats an mpem doing?
Help! Rev 800 won't run, about to light it on fire
Jet Ski Lanyards. Jet Ski Traction Mats. PWC Seat Covers. PWC Covers. PWC Dry Bags. Jet Ski Boarding Steps. Page 1 of 2 1 2 Last Jump to page: Results 1 to 10 of Thread: whats an mpem doing? Thread Tools Show Printable Version. I have owned sea doos for a few years know and i have never really had a good grasp of what its doing.
What exaclty is a computer going to affect on a carbeurated ski? Some things make sense like dess, ignition, monitoring heat and revs but what else.
I have tried to research it but with no luck. Thanks for any insight sorry for the "dumb" question. Yes, i don't spell check or grammar check and i make frequent grammatical errors. If anyone wants to employee leaving announcement email sample me that why don't you just bite your tounge.
Were on here to share our knowledge of the great invention that is the jet watercrafts and lets keep it to that!! Re: whats an mpem doing? It adjusts your ignition timing with rpm, and controls your rev limiter and start stop buttons. So the only perfomance aspect in my ski would be the timing adjustments that it makes and the cdi i don"t exactly know what that is, i can prly figure that out. Thanks for the reply. CDI stands for Capacitive Discharge Ignition, based on the same theory as a camera flash, power is stored, and discharged instantaneously at a greater voltage and amperage than what was fed ito it.
Originally Posted by SeaDooSource. Multi Purpose Electrical Module. You need a rev limiter though to keep from trashing your engine when jumping waves. You would also need an ignition switch since the mpem automatically turns the power off after 33 seconds if it's not running. How interchangeable are they? If the wire colors match up can you use it even though the part number is different? Page 1 of 2 1 2 Last Jump to page:.
How to diagnose the dess post
Next, connect the 12V supply positive to the proper spade terminal of the same plug. If the fuse opens when you turn on the power supply, the MPEM is at fault. If not, something other than the MPEM is causing the fuse to blow.
The first picture below shows connector 3, circled in green, which is the first number in the power supply connection chart. The picture above shows terminal 26, which is the terminal number in the power supply connection chart. Note: Spade terminal 24 is always on the right, 25 in the middle and 24 on the left when viewing the connector as oriented in the picture. You have no items in your shopping cart. Search: Search.
Search for make, model and part description. Do not include model year in search.Testing the ignition coil in your Ski Doo snowmobile will inform you if starting problems stem from faulty equipment. Then you will know the vehicle needs a new ignition coil, so you can maximize your time enjoying winter adventures.
An ignition coil converts the voltage from the snowmobile's battery to a much larger value to allow the spark plugs to ignite fuel. Inside the device, two long wires carry electrical current that induce magnetic fields fro the voltage increase. To work properly each coil must offer a specified amount of resistance to the electricity. Switch on the digital multimeter then turn its measurement dial to the resistance setting. Resistance is measured in ohms and denoted on the dial by the capital Greek letter omega.
Connect the red positive probe of the multimeter to the positive, outer post of the ignition coil. Touch the black negative probe of the multimeter to the outer, negative post of the device to measure the resistance of the primary coil.
If the reading differs from that stated in the Ski Doo's manual the ignition coil needs replaced. Connect the black probe of the multimeter to the central, negative terminal of the ignition coil. This creates a resistance reading for the secondary coil. Again, if the tested resistance is not what is given in the owners manual the ignition coil has gone bad.
How to Test a Ski Doo Ignition Coil
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About the Author. Photo Credits. Copyright Leaf Group Ltd.If they don't have it, they will find it!! In addition, they always go the extra mile.
I highly, highly recommend these highly trained, dedicated people". Tyler Christopher. Put it in Monday and the ski fired right up and ran like a top.
Stay away from aftermarket and just give nick or jess a call. Dollar cost ends up the same, but the cost of missing weekends on the water was huge. Generous honest people. Thanks again! Fast shipping, highly recommended! Great service, great selection and fantastic prices.
Thanks for the quick help Nick. Most of the time he shipped it same day if I ordered it before noon. Great guys. Great parts. End of story. Within minutes Nick responded and had exactly what I needed. Super fast shipping and the item was clean and in excellent condition! If you need anything for your watercraft, call Nick.
I will highly recommend your guy's business. I was on the water before noon! They always are taken care of the customers needs. I will be purchasing Seadoo mpems from them.
I live in Portland Oregon and choose to buy from Westside Powersports because honestly they have the best price on seadoo parts and best service I've found. I'm a Customer for life. I was a little leary buying from someone over the phone, but I am so glad I did. They motor shipped out quickly and was squeaky clean. Gaskets still looked new.Forums New posts Search forums.
Pretty much leaves the MPEM, which to me makes no sense because the sled wasn't even being used- but such is my luck. I get nodda, although as soon as you stop pulling it over it does read up over v across the coil briefly and then bleeds off rapidly must be some sort of capacitor inside the MPEM? Continuity through the entire wire harness, DESS cord, DESS post, kill switch, relays, voltage regulator, trigger coil output, stator output, ignition coil resistance, et al tests right on the money.
Don't have access to another MPEM, but to me that is the only variable left. Freakin' been over every inch of this thing and about to put a quarter stick in the tank and walk away Jun 3, 92 15 8. Jan 8, 1 0 1. You must log in or register to reply here. Premium Features. Top Bottom. Don't miss out on all the fun!
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Messages 34 Location south texas. How do you diagnose and test the dess post? When I place the lanyard in, it does not beep. Also, what wires do you check to make sure it is getting power from the mpem? Minnetonka4me Local Guide Premium Member. Local Guide. Best way I have come up with is Take the key off the post. Then hit the start button twice. Do the gauges come on?
If yes, then its the key or the post I do have good used tested Posts in stock, PM me if I can be of help.
Last edited by a moderator: May 10, When I pressed the start button twice nothing happened. How do you check power to mpem? Sent from my iPhone using Tapatalk. And it's a good tested mpem Sent from my iPhone using Tapatalk. Waterluvr New Member. Messages 1, Location Indiana. I just replaced a MPEM in my GTX LTD yesterday, it would not accept the key or recognize the programmer, but if you played around with it for a while it would crank and run till you took you finger off the start button.Welcome to the Darkside.
Back Country Rebels Welcome to the Darkside. Rev won't run, about to light it on fire. Share Share with:.
Link: Copy link. Picked it up right before Christmas as a running sled in need of a lot of TLC and proactive engine overhaul. Exact miles unknown, tach not working, but bought it from original owner that road it hard and put away wet since day 1. Pulled engine and had the crank rebuilt 4 new bearings, indexed, etc.
Brand new VForce-3 reed kit installed, brand new Dynoport Y-pipe, removed oil injection, carbs cleaned, both clutches completely rebuilt, 4 new engine mounts, new torque stop, pretty much everything in front of the gas tank was replace or rebuilt. Went to start it and no spark. Finally traced that issue to a faulty MPEM and bad spark plug wires.
Still won't run. Have had airbox and carbs off a dozen times. Not a single line pinched, kinked, leaking, etc. Fuel pumping up into float bowls just fine. Sled will not even sputter or cough. If you dump fuel down the spark plug holes, she'll pop right off, but dies out as soon as that fuel is gone. WTH am I missing here? Never in my life has a sled fought me every step of the way like this one has.
So you have spark, sled runs with fuel down the spark plug hole. I would look at the float adjustment or needle seat. It does sound strange tho that both float adjustment would be off.