Neeed some Boondocker help

[skibreeze]

I sent PM's but have no response from Savedbygrace or Safetybob.

I have had a number of issues with me sled this year and finally got the it back on the snow a couple weeks ago. It had the update done and currently running 6-7 lbs at 10-12k feet. My biggest issue is now when you are stopped and pin it, it doesn't really respond, not bogging, but very sluggish, no snap like it used to have.

If you roll into the throttle it is a little better or if the sled is moving slowly you don't have the issue.

At the beginning of the year I had a broken pri. spring and it would only turn 7500 rpm. I replaced the spring (160/310)and still only got 7500. Then it scuffed a piston and then went in for the update, got it back and still 7500 rpm.

I am thinking it is still a clutch issue for the rpm being low, but the no grunt when stabbing the throttle from a stop wasn't there before the update.
Just need some help.

 

[SNOW JW]

Sent you a message.

 

[rbaudin]

justin
Nice to see you back can you call me

 

[TIM]

ski

I have only been seeing 7600-7800 rpms all season. Boondocker told me, they clutch for 7800-8000 rpms.

tim

 

[SafetyBob]

Hey Dave sorry for the late response i sent you a pm, give me a call at bd, or send me your number via private message, i will get you taken care of, thanks D

 

[skibreeze]

Hey Dave sorry for the late response i sent you a pm, give me a call at bd, or send me your number via private message, i will get you taken care of, thanks D

PM'd you.

 

[chrisco]

SO WHAT WAS THE PROBLEM ??? AND WHAT WAS THE FIX ??? ANY NEWS YET.

 

[skibreeze]

Nope, nobody has returned my pm's.

 

[JuicedRMKryder]

What are you running for fuel? At 10K and that low of boost too much race gas will cause symtoms simmilar to that with the new lower compression updated head, on mine I had to go down to 20% 114 sonoco and 9lbs to make it burn and with BD's clutching will turn 8450 in the Snowies 9000ft. Hope you get it figured out soon instead of on the last ride of the season like me. Good luck.

 

[skibreeze]

Nope, nobody has returned my pm's.

Still nada.

 

[skibreeze]

What are you running for fuel? At 10K and that low of boost too much race gas will cause symtoms simmilar to that with the new lower compression updated head, on mine I had to go down to 20% 114 sonoco and 9lbs to make it burn and with BD's clutching will turn 8450 in the Snowies 9000ft. Hope you get it figured out soon instead of on the last ride of the season like me. Good luck.

I have been running 91 and 6.5 lbs the last couple rides. I got the ECU reflashed this morning back to the 09 flash and it ran great, got my instant power back and ran great most of the day...............

Then it started going lean again It did the exact same thing that it has done before, runs lean in any throttle position except WFO.

 

[mod03rmk800]

Are you adding any fuel to the rpm lo and mid? Can't remember what I had in there as I have had every single map (except Carls), but pretty sure that the 09 map was really lean @5500 rpm up to about 7000ish. Only takes a couple points off in the box and things are ugly lean. I noticed that when the temps got above 20 degrees that my fuel drifted day to day by sometimes 4-5 points on the PSI setting and a couple in the RPM setting with any map. But once adjusted(couple minutes on the trail) I was good the rest of the day. Make sure that the Boondocker cord is no where near the coil or spark plug wires.(caused me a lot of headaches with that one.)

 

[skibreeze]

This isn't about just adjusting fuel numbers. The sled goes from running good AFR's to all of a sudden, lean AFR's and stays that way. Today it started going lean in the afternoon and stayed that way the rest of the day getting back to the trailer. In the past I added fuel #'s in low and mid with no success. I haven't tried bumping up the psi #'s when it acts up. The wierd thing is that WOT is not going lean like the rest. It also didn't act up last w/e when it was warm either, so it doesn't seem to be temp related.

 

[mod03rmk800]

My WOT usually stays in the low 12's no matter what else is happening it seems.
Most of the chasing I seem to do/did was the cruising speed areas. I did make head way with the PSI numbers as far as lean pops or complete fall downs but never could get the lean cruising situation out.(would creep above 15's regularly)
Justin(Codered) explained to me once how to get into the advanced menu and adjust things in the rpms above 6000 but I never did and don't remember any more what he said. I just rode it like the old mods blurping the throttle to keep things out of there. I got use to knowing I would have to adjust things at least once a day myself. Not sure why, thought maybe the ada wasn't keeping up right. Is your box outside or under the hood?

 

[skibreeze]

Box is right behind the steering column on the console. No ADA on my kit.

 

[skibreeze]

BTW, this is not a daily thing, it has done this about 4 times over 1,000 miles.

 

[skibreeze]

So I start the sled and when revved up to 3000 rpm it is very lean, 17-20 to 1 and stumbles hard. I did this repeatedly, with Tudizzle as my witness. So I shut it down and swap ECU's and it runs fine. Now here is what I don't understand. I put the other ECU back in and now it runs fine. WTF?

 

[Mag]

So I start the sled and when revved up to 3000 rpm it is very lean, 17-20 to 1 and stumbles hard. I did this repeatedly, with Tudizzle as my witness. So I shut it down and swap ECU's and it runs fine. Now here is what I don't understand. I put the other ECU back in and now it runs fine. WTF?

Do you use any dielectric grease on the connections? I chase boost on every ride, it runs different lb's every time out. I was able to adjust most of the mid range lean out thru the low mid 5000 range by adding 6 points to the fuel and I run my mid and high psi #'s almost the same.

 

[skibreeze]

Do you use any dielectric grease on the connections? I chase boost on every ride, it runs different lb's every time out. I was able to adjust most of the mid range lean out thru the low mid 5000 range by adding 6 points to the fuel and I run my mid and high psi #'s almost the same.

I haven't greased up every connector on the sled, but I have done a bunch. Once again this isn't a tuning issue. Just sitting in the garage, running different ECU's it goes lean intermittently. The TPS was tested out before but, I'm leaning towards this being the culprit.


EDIT; I pulled the tps out of the sled to test it on my homemade tester. I can run it from .002v to 4.71v with no drop in voltage. I am really wondering why I can get the sled to run lean by varying the throttle, but the sensor seems to work fine.

 

[EricW]

I had a TPS with a fine hairline crack in it that would result in an intermitten lean usually after lunch sometime. I could tell when the problem was coming right at start up. A couple times it stumbled so bad after sitting that it almost threw me over the bars.

I have never been able to make sense of my a/f at anything but WOT. Its all over the place in any kind of trail riding. Do you have egt's as well. If so you might compare each side just to see if there is a difference when it happens.

When you did your TPS test did you hook it to an analog needle type meter so you could watch the needle swing from idle to WOT. MountainHorse saw a flat spot in the swing that was a culprit on one he did. Hope ya get it figured man.

As far as the ecu, it may not be related but I think there is a grounding wire problem on these things causing a lot of the electrical ghremlins. I took some 8 ga marine grade tinned wire with epoxy heat shrinks and made 2 additional ground wires to chassis and to motor from the Poo mounting plate. There is lots to read on this. Good luck, keep us up to date if you find the fix.

Didn't have a pic of the front ground to motor but you get the idea

Maybe it did