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Hello,

My trooper ecm fuse keep blowing constantly i can drive it for a day and nothing happen then next day the trooper blow ecm fuse 4 times in 15 ft of driving it.

I'm wondering if anyone know what the wires for fuse to ecm goes to where and if it happened to them as well?

I have my secondary oxygen sensor unplugged as well but that didn't affect the trooper in past though.

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Sounds like you have a short. My wiring is completrely different so I can't tell you what wires go to what terminal numbers on the computer but I'll bet Kinarfi can. Don't worry about the oxygen sensor, not the problem.

Lenny

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Sounds like you have a short. My wiring is completrely different so I can't tell you what wires go to what terminal numbers on the computer but I'll bet Kinarfi can. Don't worry about the oxygen sensor, not the problem.

Lenny

Yeah if I remember correctly, u went with megasquirt system, I'm curious how hard was it to set the system up for the chery engine?

Sent from my Nexus 7 using Tapatalk 2

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best way to find a short like that is to take a light like the ones on the light bar or the element out of a head light that is 50 watts or so, maybe even 2 in parallel and put leads on it so you can plug it in where the fuse goes, when it shorts out, the lights get bright and you start moving wires around until the lights go dim or out and you know your in the right area.

Start by looking a the wires that go or went to the O2 sensor and see how they ran them, mine shorted out right at the plug to the radiator and all it took to cure the problem was to move it and tie it down in a better place.

good luck

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The Megasquirt is fairly complex if your a first timer in working with this type of thing as I was. You first have to completely understand all the ins and outs of how a computer controls an engine. All the sensors and input devices need to be understood so you know what kind of signal they send to the computer. This isn't too bad except for the fact that the information you need to know is buried amongst all the different ways things can be done. So for me it took a lot of reading. There are others on here that could do it a lot easier then I did. Thankfully, it is all in the DIY Megasquirt site. http://www.msextra.c.../index.html#ms3 This particular index covers information for the the megasquirt system when used with their MS3x secondary board. There are a couple of other indexes that also give lots of info. I learned a ton. You can now buy the computer all assembled and ready to go. Here is the easy part, for anyone who wants to go to a megasquirt setup. I have mine completely in schematic form including pin callouts on each of the sensors. I can provide a copy of this print out and if you have Corel Draw, I can send you the file. It shows each and every wire going from the each computer output pin to its destination points individual devise plug pin. Don't ask me for a copy unless your actually going forward with it. I have to print 9 pages, trim them and then tape them all together. If you duplicate my setup, I'll even give you a copu of my tune file and save you a lot of Dyno tuning.

Lenny

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Lenny,

I always used dynajet powercommander for all my fuel injected bikes, and was offhandedly wondering on how I could get one for the trooper. The setup was super easy, and I'm sure you could get one for an engine with 4 injectors, instead of the 8 all my bikes had. Software is super easy, and the wiring was relatively simple. The module keeps a record of the 02 readings, allowing for adjustments.

I haven't phoned dynajet simply because its out of my budget, and there are more important things to do before I fiddle with power settings, but still... I do remember the dynajet costing me about 300...

Noc, you have to find the short. It'll only get worse.

I'm goin Lenny's route - I've ordered a bew fusebox to replace the rear seat one and will be hanging all my relays off the back wall.

NOTE TO ALL: Replace all your fuses with decent stuff, from bosch or whatever. My problems started with crappy fuses that didn't burn out when they should.

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Just an added thought:

I also used apexi fuel and boost controllers when I played with my turbocharged cars. They were easy to install and manage, allowing on the spot changes. In this case, a fuel controller would likely work really nice, and look cool too, what with the digital gauges.

This REALLY brings back memories...One day....

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Working on my rear deck currently. Whole new look for the back. I'll post pics when I get it done. Then talking about gauges, I will start to think of how I want to redo the dash next. Sort of thinking of using LEDs for each engine function like when a sensor is sending the correct signal. If something stops working I would be able to see what it was by just looking at the bank of LEDs. Got to figure out if I can do it the way I want yet. May have to call on Kinarfis expertise with LEDs. This is fun stuff.

Lenny

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Tinman,

I feel stupid lol but what's bew relay? I agree with you and Lenny that the stock fuse box is crap

I was considering going to u-pull-it junkyard like pick a part deal and pull a fuse box but i don't know which is sealed so new would be great.

I also think we can benefit from new engine harness and controller.

Sent from my DROID RAZR using Tapatalk 2

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A relay is an automatic switch that is used when you need high current (such as to my rad fan) but do´t want to run heavy wires all along the circuit. The fuse box behind the seat has them - they're little squares with 4 prongs. (many relays have 5) My fan relay melted. I'm buying new high quality relays and connectors that come with a little tab to hang them from, plus I bought this (but am still waiting for it to arrive):

http://www.ebay.com/...984.m1497.l2649

I liked the dust cover.

Getting a fusebox from the junkyard means that it won't be waterproof and you'll need to splice in your lines to the existing ones.

When I'm done, I'll have a neat row of relays and this.

It's possible your ECM wire inside your fuse box and behind your fuse has melted (like my rad fan wire did) and has soldered a few strands on to the next wire.

By the way, if you upgrade your relays (which I suggest) you can get 5 pronged ones too - just make sure the number on each prong matches from the old relay to the new

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http://www.designnot...0001/afu--l.jpg

http://www.designnot...gory_Code=cfwil

May I suggest you invest in some of these fuses also, It's what I put in mine and when I blow a few, I know at a glance which one blew. I like your fuse block, are they all on a common bus, some need to be independent. Here's the wiring diagram I posted 2441466080104110397RTTmFT_th.jpg with some color notation on the wires, if you go to the next photo, you'll see what I did to get rid of the relays, I replaced them with FETs, no moving parts, all solid state and I did that over a year ago and no problems.

Kinarfi

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Kinarfi those are very Nice, glow fuses are very handy, I'm considering circuit breakers instead like those

Also i can't see the picture or zoom in it clearly, can u repost higher quality one please?

http://www.waytekwire.com/item/46802/15-A--MINI-CIRCUIT-BREAKER-28V/

Plumber,

Which model of fusebox did u went with? I'm considering this one

Any suggestions for us guys and gals?

http://www.waytekwire.com/item/46343/MINI-FUSE-AND-MICRO-RELAY-RTMR/

I can't believe the prices is cheap but i know im going to be sucked dry by all little pieces that add up.

Sent from my Nexus 7 using Tapatalk 2

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Nocturnalsixer, I used the #46344 the one you pick is buzz on both the fuse and the relay I wanted to have some that was 12v power and some that was12v ignition.I install three bus bars one is for 12v power,12v ignition and one ground http://shop.pkys.com/blueseasystems2301busbar10gangcommonbus.aspx?gclid=CNritOvMvbECFQbonAodNGEA6A. And to splice my wires together I used these http://www.waytekwire.com/wps/portal/en/products?pSearch=METRI-PACK 280&sc=19&Series=280-Series&pg=2.If you need a box wire up let me know I have all the little pieces you pay for just what I used and shipping. I'll try to put a picture in my gallery of the bus bar after I had everything hook up and check it to make sure everything was right I then spray it with Spray Liquid Tape in Black

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do a google search for CAR FUSE WITH INDICATOR LIGHT

here's a link that looks like the have decent price on a per piece basis, http://www.electronicsnmore.com/index.php/cPath/3_337_752

I bought the ten pack and had too many of one size and not enough of the other size, I'll probably ordering enough to have all my fuses be indicator type. They are the exact same size as what's in there now except for the bump for the indicator light.

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What's different between buss and 12 volt? I think they all get 12v?

Plumber ill like that wiring diagram posted if u don't mind.

Since i don't know what I'm doing other than that I'm going to rewire. I can rewire no problem i just need the flow chart and understanding of what is buss system

Sent from my DROID RAZR using Tapatalk 2

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http://www.designnot...0001/afu--l.jpg

http://www.designnot...gory_Code=cfwil

May I suggest you invest in some of these fuses also, It's what I put in mine and when I blow a few, I know at a glance which one blew. I like your fuse block, are they all on a common bus, some need to be independent. Here's the wiring diagram I posted 2441466080104110397RTTmFT_th.jpg with some color notation on the wires, if you go to the next photo, you'll see what I did to get rid of the relays, I replaced them with FETs, no moving parts, all solid state and I did that over a year ago and no problems.

Kinarfi

Can you send me that Kinarfi? For some reason, I can't copy the diagram... [email protected]

AND,

I wish I had seen this before I ordered the fuse box.

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when they say bus it has a post at the bottom that you can hook up one wire and make that whole side 12v but it can only be 12v or 12 ignition.And the other one you have to install the wires so you can make some 12v or 12v ignition

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i see, id need some 12v ignition for some sensors and starter i believe then correct me if I'm wrong, buss is like 12v on constant all time except during cranking?

Also plumber pm sent...

Sent from my Nexus 7 using Tapatalk 2

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