another issue

poeticjustice88 · Post by **poeticjustice88** » Thu Apr 26, 2012 10:25 am

alright people, michael here again, having another random problem

i am not too sure how to explain this perfectly, so please bare with me!

apart from starting cold in the mornings, the engine runs and drives fine most of the time. recently however, when i put my foot on the loud pedal, and try to go over 2000 RPM, the engine cuts out.

It does this anytime it wants, not on the highway, but just normal street driving, will be driving fine, and then will not rev, or sustain higher revs than AROUND 2000 RPM

this morning sitting at the lights, idling fine, have not had an issue at all this morning, until i went to take off, and as soon as i reved to 2000, it tries to die on me. If i lift my foot, it goes back to idle and runs fine, however if i try to take off again it tries to die, then it comes good after 5 -10 secs (usually) and i can drive it.

the engine sounds like it is trying to rev past 2000 but it sounds like it has a 2 step or launch control and just farts and coughs.

my spark plugs are fine, as are the leads, rotor button and dizzy are fine. the only things i can think of are that one of my injectors is failing at random times, whether it be that the injector is not working mechanically, IE not pushing out the fuel, or electronically, not getting a signal. Or i was thinking maybe my timing? but if it was timing it would be constant problem no?

if anyone has an idea i would love to hear it, as i dont want it to just die on me in peak hour traffic.

also, any thoughts on whether it could be the potentiometer in the TPS?
Thanks in advance,

Michael

Andjeti · Post by **Andjeti** » Thu Apr 26, 2012 1:59 pm

Sounds like a classic case of ECU plugs to me.

Jay

poeticjustice88 · Post by **poeticjustice88** » Thu Apr 26, 2012 2:06 pm

would that happen with microtech ?

i know the standard ecu was renowned for it, but mine is MT8 microtech

n12et_exa · Post by **n12et_exa** » Thu Apr 26, 2012 3:06 pm

check your dizzy mate i had the same problem i checked everything and thats what it ended up being in my case

Damo · Post by **Damo** » Thu Apr 26, 2012 5:00 pm

I'll come past tomorrow night mate. It will be something simple. Bloody Microtechs

Damo

xr6eta · Post by **xr6eta** » Thu Apr 26, 2012 5:57 pm

Damo wrote:I'll come past tomorrow night mate. It will be something simple. Bloody Microtechs

Damo

Ah young DAMO, you've seen all this before. Was this the chopper wheel issue in mine at Barton or whatever the first issue was in Belconnen. Exactly the same symptoms as the first time in Belco I think but don't remember what we did, car would idle fine but wouldn't launch. I know you'll work it out. Will keep an eye out. Are you still coming down or is it called off.

Post by **15exa** » Thu Apr 26, 2012 7:22 pm

just had to swap out the dizzy in minecoz of the exact same problem, mt was throwing out hom and ref errors

guessing you dont have a hand controller to verify though?

poeticjustice88 · Post by **poeticjustice88** » Thu Apr 26, 2012 7:42 pm

Yeah man I got a hand controller. But damo is the magician, not me. Just got towed home. My mechanic brother told me to undo my tps and see how it goes. It went well, got me 20 minutes down the highway. But when I stopped to get fuel at the servo, the problem had come back. So I figured the safest option was a truck. I hope to god you can fox this damo lol. My girlfriends car just blew its engine, so my car is only means of transport foe the both of us, we both work 9till5, but she cant drive my pulsar because its manual and turbo, so this will be hell if you cant help, tried to call you,earlier, before the truck arrived, but I will talk to you tomorrow man.

Thanks all
Michael'

Post by **tassuperkart** » Fri Apr 27, 2012 9:45 am

CAS Im guessing.

Damo, if there are any random changes in the "tune/config" then you better start looking for RFI or earth loops. The latter is crucial.

L8r
Oracle

Damo · Post by **Damo** » Fri Apr 27, 2012 4:09 pm

tassuperkart wrote:CAS Im guessing.

Damo, if there are any random changes in the "tune/config" then you better start looking for RFI or earth loops. The latter is crucial.

L8r
Oracle

Rodger rodger. I haven't even seen the wiring to the unit, so will sus that out if possible.
It was a good thing to witness first hand on Glens car a problem which seemed to evolve rather than happen from the beginning, gave me a little insight to how the ecu deals with certain things.

Damo

poeticjustice88 · Post by **poeticjustice88** » Fri Apr 27, 2012 10:22 pm

well a couple of hours spent with damo, and no luck so far

its acting strange. started and ran when we first got in it. fixed a couple of things that should not have affected it, now wont start.

but its also trying to start after i turn the key off after cranking. after cranking, and it doesnt start, you turn the key off and the engine still pops and what not as if its trying to.

hopefully tomorrow will be a clear day and can shed some light on this situation.

Michael

Post by **tassuperkart** » Sat Apr 28, 2012 10:58 am

Damo, how does the system perform in test mode?
With the ecu running in test mode, crank the engine over and look for spark weakness

Oracle

poeticjustice88 · Post by **poeticjustice88** » Thu May 10, 2012 1:36 pm

Still doing it. Has come and gone since I got the tow home, but now it is doing it more frequently. Dexi is bringing down a new dizzy fire me, so heres to hoping. Ihave spoken to several mechanics and my tuner and the only ideas so far are cas or fuel pressure. Gawddddd I just want this sorted

poeticjustice88 · Post by **poeticjustice88** » Thu May 10, 2012 9:28 pm

New dizzy was of no help. Didn't make any change to the car, however when on the test drive my ignition coil died, so I went down and got a new one, chucked it in and the car drove phenomenally, no hesitation, drove like a new car. Drove like that for about avn hour, turned it off for 10 minutes, then went back. It did not drive as flawlessly, a little hesitation here and there, but an improvement

dexi_styles · Post by **dexi_styles** » Fri May 11, 2012 10:20 pm

poeticjustice88 wrote:New dizzy was of no help. Didn't make any change to the car, however when on the test drive my ignition coil died, so I went down and got a new one, chucked it in and the car drove phenomenally, no hesitation, drove like a new car. Drove like that for about avn hour, turned it off for 10 minutes, then went back. It did not drive as flawlessly, a little hesitation here and there, but an improvement

I was gonna shoot you a msg on Sat to see how things where going.

So it's still cutting is it?

Dex