[royce]

ok lets assume vibrations made something break

normally vibrations make things come loose, so maybe run around and check all the ecu lugs are in solid and all the loom plugs are tight

look for loose or missing earths as well, maybe even loose or missing fuses, you should have a sold one from engine to battery and engine to body as aminimum

something that I noticed you said before was when you checked the map sensor you said there were 2 pins with power and 1 with signal, now I dont have a diagram to check but generally there will be an earth cable as one of those 3 that should read 0 volts, that might indicate an earth that has come off

[JrZook]

Then check all connections to and from the ECU and sensors/batt etc. Disassemble and reassemble, clean if needed. Give all wires a firm tug to see if they are still holding in there properly.

[JrZook]

royce wrote:

o
something that I noticed you said before was when you checked the map sensor you said there were 2 pins with power and 1 with signal, now I dont have a diagram to check but generally there will be an earth cable as one of those 3 that should read 0 volts, that might indicate an earth that has come off

And this too!

[jimny_timmy]

Has to be a blockage in the fuel system somewhere you'd think. Maybe the corrugations stirred up some shit in the fuel tank and it's got itself blocked somewhere? Just a thought, prob way off the mark lol

[Scales]

thats the map circuit

[Scales]

yeah i thought about blockage also, i might disconnect and try blowing out the system or something

[royce]

should read
5v on Lg/R
0v on B/Bl
G will swing with differing vacuum, I would assume it would be highest with teh engine not running and lower at idle, rising when you open the throttle and lowering when you back off

[JrZook]

jimny_timmy wrote:

Has to be a blockage in the fuel system somewhere you'd think. Maybe the corrugations stirred up some shit in the fuel tank and it's got itself blocked somewhere? Just a thought, prob way off the mark lol

That's what the idea behind removing the vac line off the fuel reg, to make higher fuel pressure/rich situation. Apparently made no difference to the issue

[Scales]

[flash width=480 height=385]http://www.youtube-nocookie.com/v/ugErAz5R-AY.swf[/flash]

heres what it sounds like at the moment
note the hard starting, and the terrible starter motor noise.

http://www.youtube.com/watch?v=ugErAz5R-AY

[royce]

so it misses when you hit the throttle or at least bogs big time?

can you slowly raise the revs up and get it to hold at higher revs?

[JrZook]

royce wrote:

so it misses when you hit the throttle or at least bogs big time?

can you slowly raise the revs up and get it to hold at higher revs?

This and open the intake above the throttle body and spray something like wd40 down there and see if it picks up. That could determine a fueling issue

[Scales]

i cant slowly bring it up, i tried in the vid to do that. originally i sorta was able to when i limped it home (could never get above 3.5-4krpm), but it got too bad and had to tow.
is wd40 acceptable for this? or should i get something like start ya bastard

[royce]

wd40 will burn nice and good

[JrZook]

And its a lot more stable than the 20% either that's in start ya bastard

[Scales]

ill give it a go in a bit, just taking a break.

shit my wd40 is empty, just asked the girly to get me some on way home, ill make a vid when i do it.

[woody1]

What about yacam sensor, just a thought

[Scales]

Scales wrote:

Ok just a rundown of where im at
removed cam sensor whilst running, gets worse, refitted

tried that

[skyman]

Did you say the map sensor has a crack in it?

[Scales]

i just had a look down the throttle body, there seems to be a bit of bulldust down there. seems i have had a bit of a leak in one of the airbox hoses......

yes a small crack in the map sensor, i dont think its ruined it however.

[jimny_timmy]

Scales wrote:

i just had a look down the throttle body, there seems to be a bit of bulldust down there. seems i have had a bit of a leak in one of the airbox hoses......

yes a small crack in the map sensor, i dont think its ruined it however.

Hurry up and clean it so we can all find out if this is the problem!!!!

[atari4x4]

you'd almost be ready to shep it by now.

[Scales]

im going to take the whole throttle body off tomorrow and clean it out. also going to put some oil flush in and do a change (was due anyway) hopefully that makes a difference.

btw i did the wd40 thing, it didnt do anything. I was able to bring the revs right up with slight throttle however.


Shep it???? pls explain?

[JrZook]

How much dust got past the air filter by the way?

[skyman]

well the MAP sensor is what senses the amount of air the engine is taking in, it is how the ECM determines the amount of fuel to add.

If there is a crack in the map sensor that lets air leak, then the ECM is going to assume it is not sucking as much air, so it will pull fuel out (reduce fuel)accordingly.

Anyone have a MAP sensor you can borrow for a few minutes?

[Scales]

have no idea how much got past. could have been a hell of a lot, to next to none, how would u measure such a thing?????????

there was a thin layer of red dust in there, thats all i know

[Scales]

dont know anyone with a jim up here to borrow a map.
anyone know where i can get an aftermarket one?

[JrZook]

royce wrote:

should read
5v on Lg/R
0v on B/Bl
G will swing with differing vacuum, I would assume it would be highest with teh engine not running and lower at idle, rising when you open the throttle and lowering when you back off

Recheck this as royce has suggested to check if the MAP is working how it should be

[royce]

dust in the manifold I would be doing a compression test

[zukenutter]

Is the exhaust connected again?
Have you ruled out the muffler?

I read that you ran it with cat-back disconnected and seemed no different but maybe with it disconnected there was no back-pressure causing poor running, and with it connected the muffler blocks the flow. If you haven't already done so, give the muffler a firm bash a few times with your palm and listen for movement inside. If you hear stuff inside then I'd say you may have found at least another part of your problem.

My old Jim had the same symptoms. Backfiring or in this case serious vibrations can shatter the innards of the cat and then it gets blown into the muffler where it will stay forever. Mine had backfired due to a faulty crank angle sensor, then weeks later it started loosing power half way through a two hour road trip and by the time we arrived at the destination it could barely crawl in first. Gave it fair few bashes when I found the problem and luckily managed to dislodge it a bit so I could get home.

[stockman]

Scales wrote:

havent done that with the injectors yet. theyre on my list though, spark plugs are a-ok, just pulled them again

checked plugs, look dry to me. they are sealed up quite well actually.
wheres this earth your talking about?

also checked voltages on the map, seem ok. 5v, sig and another 5v. pretty much what the manual calls for i believe

Did you find the earth?