ok this is the problem, i jsut swapped the head on my a6 with a z6 vtec. timed the engine but still using the pm6 ecu from the a6 engine, only because i havent bought the ecu wiring adapter for obd0 to obd1 yet, i do have the p28. wont the engine still run with the pm6 ecu, just no vtec.im just tryin to see if it will start to make sure i have it together right. the problem im having is it will kinda start/sputter but wont idle i have fuel and spark, i made my own distributor adapter from a post i found on here. so i have spark but wont stay running. main relay is workin, it does prime and everything. no ecu codes. anyone have an idea whats wrong???

 

Maybe you DO need obd1 ecu since timing, sensors, etc on those two are different.

 

idk, i swapped all sensors over for the a6 manifold, the only thing different is the head and distributor and i have fuel and fire, its stumping me... and i put my hand over throttle body, its sukin air, but when i did that it kinda choked it, and it ran an extra sec.lol if ur timing belt is off 1 knotch could it do this also?

 

timing is probably off you are using an obd0 dizzy right if not the obd1 wont work with the ecu

 

yea i made the dizzy adapter for the obd1 i have on there now, but i have spark but it still wont work with the pm6? its the distributor for the z6, another thing i had to do when i switched the head, i had to switch the timing belt cause the a6 belt was too long, so that means the a6 ecu, timing is different too right, cause the belts are different, like it could be sparking and the wrong time caus eits still the pm6 ecu thinkin it has that longer belt, does that make sense?


Modified by bigwill_2004 at 12:16 PM 11/7/2006

 

bump

 

you are using an obd1 dizzy with an obd0 ecu that WILL not work

 

ok, thanks man, i got 1 last question, whats the compression suppose to be with a z6 head on a a6 block?anyone? mine was 165,135,165,115.. i know thats not good either


Modified by bigwill_2004 at 2:38 PM 11/7/2006


Modified by bigwill_2004 at 2:39 PM 11/7/2006

 

Well the compression ratio is supposed to be 10.x:1 depending on the condition of the block and the head mating surfaces, carbon buildup, etc.

 

do u have a map sensor i had to put 1 on mine and u can hook up ur Vtec with a rpm swith so u can keep all ur stock stuff i run mid 15's with a bad tranny and a few other things ........................peace

 

dood i ran a 15.0 at 92mph i got a gutted 88 hf with an a6 and a 4spd. dx tranny so i hope puttin the vtec on here makes it faster and not a waste of time...yes i have a map everything is the same jsut switched the head and dizzy, changed all my intake sensors over the the z6 manifold, anyone have a ecu adapter for sale for a obd0-obd1 conversion?