BJ42...sudden jolts...?

[1982BJ42]

Pick up a 42 a few months ago and all has been well until a couple of weaks ago when the cruiser started jolting intermittantly when driving. Have now narrowed it down, when accelerating at all in 2wd in gears 1-4, I get a periodic jolt of the whole truck lasts a tenth of a second, was happening every 10-20 seconds on the highway, then 8-10s, at the same time the jolt happens there is a tick..then a tock...from the glove compartment, same tick tock that occurs on start up. So 1st, what is that tick tock sound? second, would the sudden jolt be from a malfunction fuel pump...would the ticktock indicate a electical prob between the ignition and fuel pump...? Still ticktocks when decellerating but no shudder...any help appreciated.
J

 

[Greg_B]

Pick up a 42 a few months ago and all has been well until a couple of weaks ago when the cruiser started jolting intermittantly when driving. Have now narrowed it down, when accelerating at all in 2wd in gears 1-4, I get a periodic jolt of the whole truck lasts a tenth of a second, was happening every 10-20 seconds on the highway, then 8-10s, at the same time the jolt happens there is a tick..then a tock...from the glove compartment, same tick tock that occurs on start up. So 1st, what is that tick tock sound? second, would the sudden jolt be from a malfunction fuel pump...would the ticktock indicate a electical prob between the ignition and fuel pump...? Still ticktocks when decellerating but no shudder...any help appreciated.
J

Search is your friend...

https://forum.ih8mud.com/showthread.php?t=71079
https://forum.ih8mud.com/showthread.php?t=69385
https://forum.ih8mud.com/showthread.php?t=67876
https://forum.ih8mud.com/showthread.php?t=46843
https://forum.ih8mud.com/showthread.php?t=41000
https://forum.ih8mud.com/showthread.php?t=32644

hth's'

gb

 

[dieselbigot]

Yep, it's a bad fuel control relay....the relay sends a signal to your EDIC to kill the fuel to shut down the engine....just really fast and intermittently. I don't have the PN off hand... could also be a wiring issue elsewhere. My 70 did the exact same thing a few years ago and it turned out to be a bad ground in my stereo wiring that was causing it. Once I cleaned up the bad wiring I was good to go without having to replace my relay.

Read through these threads that Greg's posted then have a look at your relay and any poorly done accessory wiring from days gone by. In any event, not a big deal.

good luck

 

[1982BJ42]

Thanks for the links and tips. Am playing with a poor charging system at the moment aswell so am sure that isn't helping the situation. Will be on this over the next few days. Any ideas on potential damage from driving as is? Pulled a long one today.

regards
J

 

[crushers]

when running just diconect the edic arm and stall to stop the engine. turn the key and it will fire right up. i would recomend this for the short term, i drove a BJ42 like this for nearly 9 months a ways back. when you go to stall put the tranny in 4th and let the clutch out while on the brake.. stalls easily this way...
this will prevent the on off on off problem...
cheers

 

[1982BJ42]

In one of the posts, there was mention of a ground to wheel and grease preventing connection. Where is this? Greased my steering and did an oil change yesterday, maybe it was more of a mess than I thought!
J

 

[1982BJ42]

Beautiful! Wayne, alternative measures! Wicked, though I may oudo your 9month record. Haven't got a hold of a manual yet so am heading off to download and find this Holy edic arm.
cheers
J

 

[brownbear]

when running just diconect the edic arm and stall to stop the engine. turn the key and it will fire right up. i would recomend this for the short term, i drove a BJ42 like this for nearly 9 months a ways back. when you go to stall put the tranny in 4th and let the clutch out while on the brake.. stalls easily this way...
this will prevent the on off on off problem...
cheers

NOTE: this is a temp measure. But I am sure from the sound of it, you would know that.

Really 9 months Wayne? I gotta try that, I thought doing the stall out I would look too much like a But hey anyhow

But doing that is better by far than having the engine cut on and off.

Your whole charging problem and edic sounds like a combo of bad grounds. You might want to start replacing the battery wires and cleaning all the connections up.

4wheelauto sells battery cable kits. Try looking them up. If your negative terminal(or pos) is any how corroded or very worn(super flexible, like a shoe lace) then you need new cables.

 

[brownbear]

I posted a pic in here, halfway down, it shows a top view of the EDIC arm and motor.

To the RH side is over inject for start, to the LH side(front) is Stop the engine.

See when you are running the engine(idle or pull the hand throttle out) if the arm slightly moves when it sputters(misses), thats if it does it while parked and with no load( in nuetral).

https://forum.ih8mud.com/showthread.php?t=72052

 

[1982BJ42]

I've been know to hold vw's together with duct tape...but yes...I do understand the notion of temporary...however reality is that duct tape layered... lasts a long time...and makes a very sticky mess. Yes my electrical system is somewhat distressing, and I do think it is a combination of worn terminals, loose connections...and now, greased grounds. Will be in on 4wheel auto. Thanks for all the help guys.... the "funky chicken" really kicked in, ironicly just as I was taking the girl out for a spin as proof that....this vehicle was not a waste of $$ that sould have better been spent on....... diamonds......

 

[1982BJ42]

Thank you very much for the pic, I'm learning slowly.
J

 

[brownbear]

Thank you very much for the pic, I'm learning slowly.
J

They are great vehicles to learn on. No computers and since they are not gassers, the engines are quite simple. BUT they are different. So in time we learn.

Play with the search tools, lots of info there.

 

[Greg_B]

Beautiful! Wayne, alternative measures! Wicked, though I may oudo your 9month record. Haven't got a hold of a manual yet so am heading off to download and find this Holy edic arm.
cheers
J

Or you could simply pop the hood and pull the fuel lever to the off position to stop the engine. Donsn't look a cool though

Poor charging too eh. Fix your charging system 1st, and see what effect that has on everything. Check your ground for the battery system, and your pole connections. Pull the brushes on your alternator and see if they need replacing. Cheap and easy fix: Any alt shop will hav brushes and can solder them in for your for minimal costs.

hth's

gb

 

[brownbear]

Or you could simply pop the hood and pull the fuel lever to the off position to stop the engine. Donsn't look a cool though


gb

And it looks cool stalling it out? Imagine having some cute little date beside you for the first time, pull up to the curb. She is just about to climb out and you give her whiplash! Cool.

 

[Greg_B]

And it looks cool stalling it out? Imagine having some cute little date beside you for the first time, pull up to the curb. She is just about to climb out and you give her whiplash! Cool.

I guess you missed the grin...or the tongue in my cheek...

Have a good holiday with those you love...

gb

 

[Diescipel]

Poor charging too eh. Fix your charging system 1st, and see what effect that has on everything. Check your ground for the battery system, and your pole connections. Pull the brushes on your alternator and see if they need replacing. Cheap and easy fix: Any alt shop will hav brushes and can solder them in for your for minimal costs.

hth's

gb

I'm with Greg. Based on my experience with this, the fuel control relay seems to be very sensitive to muck ups in the rest of the electrical system. I 'fixed' my problem by fiddling with grounds and by fixing a headlight dimmer relay--never touched the fuel control relay, even though it is central to the circuit.

My god this has to be the most common problem on 3Bs.

B

 

[brownbear]

I guess you missed the grin...or the tongue in my cheek...

Have a good holiday with those you love...

gb

Mine was the same way! LOL

Have a Merry Christmas too.

 

[1982BJ42]

Have check what I could so far and problem is still persisting, even with no load. The Alt brushes are due to be checked and the electrical system in general. Already clued into the manual shifting of the fluel control lever under the hood to stop the engine......not so worried about looking "cool"...but not so fond of lookin stupid..... Considering the cooler climate up er, would it make sence to manually shift and increase flow prior to start?

Merry xmas to all.
J

 

[Greg_B]

Mine was the same way! LOL

Have a Merry Christmas too.

No worries...

Tis the trouble with internet communications sometimes: Syntax can work against tone and intent...

J, what's your static voltage with no load, and running? Be a good excerise to clean all ground connections anyway, while dealing with the brushes.

Na...just glow it, and start with no over-inject. You can give it slight extra fuel too, with the throttle cable in the cab.

hth's

gb

 

[Diescipel]

What is the possibility of running a cable into the cab for manual control of the fuel control arm?

Just a thought...