Milo's Astra Coupe Supercharged Build
- Thread starter milo
- Start date
Dave Gilbert
Senior Member
Im going 302s on the front soon. N vented on the rear 
vented rears are so 2 year agoIm going 302s on the front soon. N vented on the rear
Dave Gilbert
Senior Member
Just putting z20net brakes on for now. Hope to get some 314s for the front at some point
milo
Senior Member
Right New problem need some help on plz.
vocky evocarlos dewismotorsport corsaZ22se
I'm getting light on with code p1221 secondary fuel circuit voltage low, car goes into limp mode. I've been under the car and checked the plug under car above the rear axle. All seems fine no wires bare or snapped and gave it clean and pluged it back together. Checked the connection on the plug under the rear seat same all fine. When the error on I've lifted the rear seat and I can clearly hear the the pump is working fine. Is they any where else I need to check? Throttle body plug got anything to with it? Or what does cause the error? I was thinking lose/bad connection but can't find one
vocky evocarlos dewismotorsport corsaZ22se
I'm getting light on with code p1221 secondary fuel circuit voltage low, car goes into limp mode. I've been under the car and checked the plug under car above the rear axle. All seems fine no wires bare or snapped and gave it clean and pluged it back together. Checked the connection on the plug under the rear seat same all fine. When the error on I've lifted the rear seat and I can clearly hear the the pump is working fine. Is they any where else I need to check? Throttle body plug got anything to with it? Or what does cause the error? I was thinking lose/bad connection but can't find one
KevinH
Senior Member
Hi Milo, it could be worth checking the two purple relays which sit in the rectangular fuse/relay box located on top of the ABS unit. One of them is for fuel and the other engine management (not sure which one is which). Remove them one at a time, they can be rather stiff, and smear some vaseline on the terminals and replace.
Not saying this is your problem but they're worth checking.
Not saying this is your problem but they're worth checking.
milo
Senior Member
Hi Milo, it could be worth checking the two purple relays which sit in the rectangular fuse/relay box located on top of the ABS unit. One of them is for fuel and the other engine management (not sure which one is which). Remove them one at a time, they can be rather stiff, and smear some vaseline on the terminals and replace.
Not saying this is your problem but they're worth checking.
Hey Kev
I put 2 brand new ones in last year when I had an issue the car cutting when extra power was drawn from the battery. I'll give them a check again and put some vasaline on them, plus I know they a b*****d to get out lol
KevinH
Senior Member
Have a look here regarding error code P1516:
http://www.vx220.org.uk/forums/topic/113992-p1516-loosing-will-to-live/?p=1370411
http://www.vx220.org.uk/forums/topic/113992-p1516-loosing-will-to-live/?p=1370411
dewismotorsport
Senior Member
As above really, also worth checking earth's are clean
corsaZ22se
Senior Member
I also have the code p1516. but only if I let it go through bulb check before starting.
strange thing is that even with the code live/active it can be cleared and doesn't come back until next time you go through bulb check. swapped many parts, checked all the plugs, earths ect. and all I can put it down to is to much resistance in the wiring in the corsa, the fault has been there since I fitted the z22se. didn't have the fault in the Vectra before.
seen similar faults on machines before and adding a second power supply to the controller and better earths helped so this will be my next step when I get around to it.
too much power being drawn through 1 circuit can lead to a drop in voltage enough to trigger the fault codes we have.
strange thing is that even with the code live/active it can be cleared and doesn't come back until next time you go through bulb check. swapped many parts, checked all the plugs, earths ect. and all I can put it down to is to much resistance in the wiring in the corsa, the fault has been there since I fitted the z22se. didn't have the fault in the Vectra before.
seen similar faults on machines before and adding a second power supply to the controller and better earths helped so this will be my next step when I get around to it.
too much power being drawn through 1 circuit can lead to a drop in voltage enough to trigger the fault codes we have.
milo
Senior Member
If u could bud that would be great help and saves paying over the odds
Same here if I clear the code it runs great till it happens again. It never does it in the dry only when wet and I had this issue around this time last year but it fixed it self
. Ive contacted jeff from the states to get a price on a tb and I'll get a new map sensor when Carl can find the part number to order it from the states.I'm planning on taking the charger off tomorrow to measure the coolant hoses on the intake manifold as I want make sure I got the right bends on the new silicone hoses for it. So I'll give the tb plug and pins in the tb a good look over and apply a healthy smear of vasaline and see if that makes any difference in the wet.
