Not Running to healthy

[Tony C]

just got hom,e from work,
after i have collected the kids from school i will go testing,
cheers guys :D

[Agriv8]

fingers crossed from Yorkshire ..

regards

Agriv8

[Tony C]

well she still not liking things.
we had her running and got a datalog donish, see below: (recent .msq is in the zip file too)
http://www.v-8.org.uk/ecu/27-04-07.zip

but we pulled the drivers side injector leads off while running and rvs picked up a bit and the idle was real smooth at the increased revs with only 4 injectors  ??? ??? ??? ???

[Agriv8]

Tony,

New to this so not an expert ( there will be one along shortly ) Map sensor at 0  ??? ? then it spikes at 351seconds so its reading somthig but Strange.

mine reads 100 ( not running )  and drops to 30 / 40 at tickover.

might be your setup

Regards

Agriv8

[dnb]

If the ECU was in alphaN mode then this shouldn't have been an issue.

I don't remember if the ECU still reads & reports MAP if it's in alphaN mode - Rob do you know?

[Tony C]

pass,
this is all new to me :(

[[email protected]]

In AlphaN mode TPS translates to MAP 0% = 0kpa, 100%=255kpa.

Just looking at the datalog, and I'd love a second pair of eyes to look over it...
Aside from the fact the signals look a little noisy (not enough to worry about) everything looks fine.
The RPM waves around between 841 and 1213 but that seems to be in line with what the IACV is controlling and not unsual on a car thats just been switched over to a brand new map.

The lambda looks fine: 0.98 to 1.03.

Pulsewidths seem to look in line with what I suggested yesterday night.

[Tony C]

but she dont idle healthy :(
not like it did the day before this hiccup

also why would the car run smooth after the drivers side injector wires are removed  ???

[cliffb75]

In AlphaN mode TPS translates to MAP 0% = 0kpa, 100%=255kpa.

Just looking at the datalog, and I'd love a second pair of eyes to look over it...
Aside from the fact the signals look a little noisy (not enough to worry about) everything looks fine.
The RPM waves around between 841 and 1213 but that seems to be in line with what the IACV is controlling and not unsual on a car thats just been switched over to a brand new map.

The lambda looks fine: 0.98 to 1.03.

Pulsewidths seem to look in line with what I suggested yesterday night.

I'd agree for most of it it looks fine, but then.....

from about 4300 secs on it starts running lean. PW drops from 3 to 2.6, MAT has increased 14 to 15. Still no throttle applied. Idle starts to oscillate. A small throttle bip brings it back in check for a little while until it goes again. this time pW drops from 2.7 to 2.2. Looking at the lambda trace its possibly misfiring on the same cylinder every time.

Check the following

Let it run until it starts misbehaving at idle. Then try and hold it up on the throttle at say 2500rpm - What happens.
Then try with a bit of load (hold it on the brakes in drive and increase the revs a bit)  - What happens?
Then try letting it idle while its rough and pull the plug leads one by one - What happens.

The first 2 tests are to try and increase the injector pulsewidth to see if you are not opening the injecor properly at low PW's. The thrid test is to see if its a plug or lead problem.

Incidentally pulling all the injectors off one bank should allow it to idle as nice as a 4 cylinder engine. However, since you thought it was better than with all of them connected, it could be a clue that the problem is on the bank you disconnected. Try the other side too and see the effect.

[Tony C]

problem with the other bank is they are under the plenum inlet mate and i can't get to them

[[email protected]]

I had that drop down as warm-up enrichment turning off.

Does it run as badly on AlphaN as it did on speed density?  If so can you switch back to speed density so that we can get an idea of the vaccum that the Manifold is drawing?

Cheers

Rob

[Tony C]

i'll try tomorrow mate,
as neighbours and mrs moaning about the car having to be revved to keep running, every night is a bit understandable.
it runs a bit better still misses but hunts up and down a bit,
if you pick the revs up a bit it seems to run a bit smoother,
i may send the ecu back for you to give a once over any way mate just incase something is not 100% somewhere.

Oh i got two weeks to get her running 100% :(

[[email protected]]

problem with the other bank is they are under the plenum inlet mate and i can't get to them

You can turn off each injector with MegaTune, by changing the injector patterns...
Settings->Injector Outputs
0 has a value of 105 which is the binary pattern 01101001 which is driving injector lines 1, 4, 6, 7
01101000 = 104 (turns off line 1)
01100001 = 97 (turns off line 4)
01001001 = 73 (turns off line 6)
00101001 = 41 (turns off line 7)

1 has a value of 150  which is the binary pattern 10010110 which is driving injector lines 2, 3, 5, 8
10010100 = 148 (turns off line 2)
10010010 = 146 (turns off line 3)
10000110 = 134 (turns off line 5)
00010110 = 22 (turns off line 8)

[cliffb75]

problem with the other bank is they are under the plenum inlet mate and i can't get to them

What about at the dizzy?

[Tony C]

can some one do me a favour?
that .msq file of mine can some one change the settings back to speed density or what every you want me to do a datalog of,
the guy that was helping me and doing the ecu settings i think has had enough and lost interest now (don't blame him as he was getting quite stressed with it today), and i aint a clue what he changed as i was tring to keep the car running while he changed the settings :(

i'm even contimplating going back to the old hotwire efi as i know that worked spot on up to removal.