Not Running to healthy

[Tony C]

Hi Guys,
just had the engine over hauled,
tried starting the car and it ran shite and i mean shite,
plugged the laptop in and it seemed to have half the settings can't remember which values were set back to 0 now,
but uploaded current map from ecu and it fired and ran,
went for a drive and it went like a rocket,
went to start it this morning and it keeps stalling once you get it to idle it seems to be running on around 6 cylinders until you rev it,
at idle you can pull all the drivers side injector plugs off and the idle smooths out a bit and the rpm picks up a fraction
you can pull the plug leads off the same side and it makes no difference either when injectors are connected.
has some thing gone screwy with the ecu???
the battery was discconected for over 3 weeks.
HELP.... was going to a car show monday but now have had to put it off.

[Tony C]

have uploaded firmware version 1.0.53 to the ecu as was running version 1.0.36
and has made no difference,
looks like we are going to go through every thing tomorrow to try and find out whats gone wrong.

[rob@vems.co.uk]

Hi Tony,
First chance I've had to see the forum this weekend, sorry to head about this problem.

Can you send me the MSQ (File->Save As...) from MegaTune please?

Rob

[Tony C]

file sent mate.
it ran ok for a few seconds after installing the latest firm ware, but then wnet back to shite idle and near stalling again
the green and red lights at base of MT go mental up and down like mad.

[Tony C]

also my kpa is at around 85-90 at idle, that aint right either is it?
what should it read when engine not running?

[dnb]

Sounds like your config has got totally wrecked!

Or else something inside the VEMS has died and is consuming lots of current and causing a volts drop that messes up all the sensor readings.

I hope it's just the config!

[dnb]

kpa should be 20 to 30 at idle IIRC.

[Tony C]

me too mate as will not be happy if the ecu has got screwed up,
that high lift cam would not cause high kpa would it?
but saying that it ran well sweet saturday, as done 30 miles driving it with no probs.
until this morning when it refused to play ball,

[dnb]

The high lift cam will cause a rise in idle kpa, but shouldn't be that much.  The TVR standard cam is pretty wild, and that was OK.  (Not as wild as our new cams though!)
When I had a problem with my 1st VEMS, the temperature readings, TPS and lambda all read very wrong.  This was what gave me the clue.

Also, I met up with Rob last year to try a new config & firmware, and we "lost" several sensors during the firmware update so had to revert.

[Tony C]

i hope its something silly,
as the car went like a ferkin rocket saturday night.

[Tony C]

my mates coming over with his scope today,
we are going through the whole system to see if every thing is tickity boo and going to test for air leaks too.
will try and do a datalog for you rob also.

[rob@vems.co.uk]

Email sent to you Tony.

[Tony C]

WE may of found the problem
the vac advance unit on the dizzy is split big time, we undone the bolts and moved the plate by hand and we got her to near idle as per the weekend,
so going to order a new one before we change any thing else regarding the ecu
Thanks for every ones input so far.

[Tony C]

right,
this is getting me down big time now,
the new parts arrived today for the dizzy after a two week wait due to customs it has made naff all difference to the running of the engine,
which points back to a possible ecu fault.
it runs well rich as in 8 red lights and no matter what you change in the ve table it stays the same,
any one any ideas? or what to check before i bore wash and f@@k up my engine.

could the map sensor be iffy? im just stabbing in the dark now

[Agriv8]

Tony have you checked the fuel presure ? regulator stuck ?

regards

agriv8