Fault Code 93

[Markd89]

Engine Control Module (ECM), MIL/RPM/Fuel consumption signals - circuit malfunction

I have a fault code of 93, autodata has given me a few tests to try on the ecu, was wondering if anybody has had this code before and what they did ?

I have a slight missfire, idle is abit up and down and bogs out when i hit the throttle

Engine is C16se MK3 Astra

[pie]

93 = Quad drive module (in ECU)

http://www.topbuzz.co.uk/info/fault_codes/fault_codes.htm#gm

hope this helps :thumb:

[swedge]

93 Quad drive module (in ECU)

[swedge]

93 = Quad drive module (in ECU)

http://www.topbuzz.co.uk/info/fault_codes/fault_codes.htm#gm

hope this helps :thumb:

grrrrr

[swedge]

http://i10.photobucket.com/albums/a102/muckingfuppet/eadd8f98.png

[Markd89]

Haha + rep to both, according to the web - :

Coil pack
Bad earth

[swedge]

im seeing it as being something inside the ecu that controlls the idle motor and various other things

most people are saying check the ecu earths

[dc1984]

I had this problem mate, spent ages trying to find the fault.

Turned out to be my coilpack had a bad earth after I got the coilpack bracket powdercoated, didn't know it used the bracket as an earth:thumb:

Possibly worth taking it off and sanding it down mate;)

David.

[Markd89]

i'll check the resistance on the ecu earths and see if theres any current going through them, it stutters on idle so what you say make sense

[Markd89]

I had this problem mate, spent ages trying to find the fault.

Turned out to be my coilpack had a bad earth after I got the coilpack bracket powdercoated, didn't know it used the bracket as an earth:thumb:

Possibly worth taking it off and sanding it down mate;)

David.

Spot on mate will try this first as my cylinder head / coil bracket was sprayed in heat temperature paint, didnt realise it acted as an earth

[dc1984]

I actually replaced my coil pack twice incase I had got a dodgy one aswell.
Start with the cheap options;)

David

[Markd89]

cheers for the help, managed to get the code 93 out of the way, cleaned all the earths and it dissapeared, just need to sort the missfire / backfire out

[dc1984]

Nice one mate:thumb:

David.

[dc1984]

How's it getting on now matey?

Did you get the misfire sorted out?

David.

[Markd89]

Hi david, managed to get it up and running, no fault codes but has a slight missifre but nothing im bothered about, it could just be the exhaust, check out my project build all the recent pictures are in there.

[dc1984]

Good stuff mate, I will have a look just now;)