HELP Engine management light,revs drop

[Ollieh17]

Started on the way home a slight judder/misfire around 2krpm.just went out again and was worse. Revs even dropped to zero then went back up again this time. Happened a few times and conked out once and wouldn't restart for a while.any ideas what this could be???

Edited December 11, 2013 by Ollieh17

[Ollieh17]

Car statyed again after pulling ht leads out and putting back on again, not sure if that was a coincidence or not

[jimmymac101]

This happened in my NA, turned it was my collent temp sensor!

James

Edited December 10, 2013 by jimmymac101

[jimmymac101]

Also mine wouldn't restart easily if it was a cold start, hot starts were ok.

[Ollieh17]

Mine starts fine hot or cold. Changed the coolant a few times over the past week to get the turbo kit off. Was fine Saturday and Sunday after fixing that though.

[jimmymac101]

When was the last time your spark plugs were changed?

James

[Ollieh17]

Not sure tbh, its on my list!

[Ollieh17]

Also removed aircon pump recently and noticed a drop in the idle

[Ollieh17]

car started and ran fine this morning.. just a bit of moisture somewhere maybe? Gonna change the spark plugs for piece of mind anyway

[Ollieh17]

Still happening, keepa cutting out while driving and getting dangerous.. Any ideas?

[corofin12345]

you will loose idle after removing the a/c// just re adjust the idle screw under the rubber grommet on the top of the throttle body.. as for management light coming on.. do a self diagnostic, it will tell you exactly why the light came on and may source the actual problem

[Ollieh17]

Tried to do the self-diagnostics and had no luck, was following a guide on TGT. But was in a rush. Did notice it only happens after i put my foot down and reach full boost. Driving slow it never happens

[micky boy]

Fuel cut?

[Ollieh17]

nope not fuel cut, it'll boost fine then when i cruise again the revs will keep dropping. Without doing the diagnostics, im guessing its something to do with the spark plugs/ignition they look old and 'crusty'. But i don't get why if i drive slow with no boost its fine. Starts up in the morning fine too

[micky boy]

When boosting it sends more volts through the leads then not boosting so if your leads are braking down you will get a slight judder/misfire on boost!

I would still try and do diagnostics test to be sure

[Ollieh17]

Its fine when boosting thats the strange thing, but then off boost it starts misfiring/juddering. Did try a diagnostic:

>let the car get to temp

>turned off

>bridged connection with paperclip e1 to te1 or whatever it is

>turned ignition to on

light just stays on and doesn't flash

[jimmymac101]

this is what mike from TD sent me when I was having problems mate :

Check your earths and maybe add a couple of extras to help things.

ECU codes, in the diagnostic port under the bonnet, bridge TE1 and E1 with a paperclip, then put your ignition to the on position, count the flashes from the ECU light and let me know what the codes are.

It'll give you two numbers for each code, with a pause between them, ie:

Flash... Flash... Flash........................... Flash

That would be code 31

Cheers

Mike @ TD

As far as I'm aware there's not a need to warm her up first if there's a fault the ecu would have stored it until the battery is disconnected for 5-10mins / ecu disconnected

Hope that helps abit

James

[micky boy]

Hmm

You must not have the clip sat in write on e1 to te1

[Ollieh17]

forget to check the earths!! need to try when i have more time

[jimmymac101]

The test is something you can do in a 15min tea break lol so simple

[Ollieh17]

it's the simple things that get me haha, i'll give it another go after work

[jimmymac101]

Hahah I know That feeling mate, 10min job turns into 1hr job 8/10 times lol

James

[Ollieh17]

Did it!!! Fault code 14 ignition/amplifier

[corofin12345]

start at igniter and work you way to dizzy and look for breaks etc etc.. may be worth trying another igniter

[Ollieh17]

So unlikely to be HT leads or spark plugs?