| Author | Topic |
|---|
I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
|
|
Injectors permanently switched on
|
Mon, 17 January 2005 23:36
|
 |
Ok, I have finished the Crown. I had this thing running months ago but had a vast range of things that needed doing.
The other day I plug in the ECUs. Crank her over and petrol comes out of the exhaust manifolds. That's bad on the Dave good <--> bad continuum. After eliminating the CSI as the source, I became a little more worried. I put a test light across the injector plugs which revealed that all injectors are permanently switched on (hence the flooding).
What might be doing this?
The ECU has never received a reverse polarity. ECUs are sitting on carpet. All grounds are connected.
|
|
|
Location:
Brisbane
Registered:
May 2002
|
|
Re: Injectors permanently switched on
|
Tue, 18 January 2005 00:10
|
|
The injectors have constant 12v and are ground switched, so your test-light does not necessarily reveal the injectors are permanently on.
Having said that, petrol coming out of the exhaust is never a good thing. So you're certain you have spark? And it's not firing at all?
|
|
|
I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
|
|
|
Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
|
|
Re: Injectors permanently switched on
|
Tue, 18 January 2005 00:36
|
|
good luck 
if a cylinder locks due to being filled with petrol, don't be tempted to crank it with the spark plug out... as one MSer found out it leads to "Very Bad Consequences", such as 5ft fireballs by the side of the road and a visit by the local fire brigade 
|
|
|
I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
|
|
Re: Injectors permanently switched on
|
Tue, 18 January 2005 01:46
|
|
"very bad consequences" I love that
would this "certain MSer" be you?
|
|
|
Location:
Cabramatta, NSW
Registered:
May 2002
|
|
Re: Injectors permanently switched on
|
Tue, 18 January 2005 02:54
|
|
|
PICSORBAN!!
|
|
|
I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
|
|
Re: Injectors permanently switched on
|
Tue, 18 January 2005 03:27
|
|
Well, my brilliance continues to amaze me. 
So I checked the wiring. As it turns out the ECT ECU has 2 plugs 26P and 16P, whilst the engine ECU has 4 plugs (8P, 22P, 26P and 16P). As it turned out, I hooked up the 26 and 16P ECT plugs to the engine ECU and vice versa. Interestingly the plugs have exactly same slots so they will just plug into the wrong place (ie not Dave proof). I suppose in a Crown they are separated by a foot of loom and a shitload of plastic.
After expunging all the petrol from petrol locked motor, shooting a bit of oil into the bores, swapping ECU plugs and waiting till all the petrol fumes had dissipated, the stupid thing fired first crank.
|
|
|
Location:
Brisbane
Registered:
May 2002
|
|
Re: Injectors permanently switched on
|
Tue, 18 January 2005 03:30
|
|
LOL
joo = teh suck.
|
|
|
Location:
Cabramatta, NSW
Registered:
May 2002
|
|
Re: Injectors permanently switched on
|
Tue, 18 January 2005 03:35
|
|
| gianttomato wrote on Tue, 18 January 2005 14:27 |
So I checked the wiring. As it turns out the ECT ECU has 2 plugs 26P and 16P, whilst the engine ECU has 4 plugs (8P, 22P, 26P and 16P). As it turned out, I hooked up the 26 and 16P ECT plugs to the engine ECU and vice versa. Interestingly the plugs have exactly same slots so they will just plug into the wrong place (ie not Dave proof). I suppose in a Crown they are separated by a foot of loom and a shitload of plastic.
|
I must say, that's pretty impressive! 
At least you didn't kill the engine (like my effort with the sump pickup bolts).
|
|
|
I supported Toymods
Location:
Australia
Registered:
November 2003
|
|
|
Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
|
|
Re: Injectors permanently switched on
|
Tue, 18 January 2005 04:37
|
|
| draven wrote on Tue, 18 January 2005 12:46 |
"very bad consequences" I love that
would this "certain MSer" be you?
|
LOL, no  i think it was a guy called Wing (he named the Wing Diode int he MS tach trigger circuit )... so he had "gas" shooting "feet", ie US
woohoo!! nice one GT 
gotta love happy (and non-fiery) endings
|
|
|
I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
|
|
Re: Injectors permanently switched on
|
Tue, 18 January 2005 06:45
|
|
|
Plugs are labelled and color coded now, and it's a UZS131 loom. So pleased I didn't blow the ECUs.
|
|
|
I supported Toymods
Location:
Australia
Registered:
November 2003
|
|
Re: Injectors permanently switched on
|
Tue, 18 January 2005 06:47
|
|
| gianttomato wrote on Tue, 18 January 2005 14:45 |
Plugs are labelled and color coded now, and it's a UZS131 loom. So pleased I didn't blow the ECUs.
|
Cool, I know who I'm calling when I get stuck.
|
|
|
I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
|
|
Re: Injectors permanently switched on
|
Tue, 18 January 2005 07:56
|
|
If you use Kdog's diagrams on Lextreme, you will piss it in.
If you plan on keeping the auto, read that thread with Grant's explanation. I will let you know tomorrow if the 5MGE single pulse doover works as a short cut. I suspect it will still need a 4 pulse per revolution doover to get the right shift patterns. Also beware that the Kdog diagrams for the ECT are almost perfect except for what he calls SS, SS1 and SS2 speed sensors - they are in fact steering sensors and can be turfed. Using Cambelt's intact halfcut and a multimeter, we deduced that the purple/white wire sees 1 pulse per revolution, whilst the black/orange probably sees 4 (I'll be testing that next week).
I can also offer you some other stuff where I traced out (almost) all the wires in the loom which end up in the fuse box.
|
|
|
I supported Toymods
Location:
Australia
Registered:
November 2003
|
|
Re: Injectors permanently switched on
|
Tue, 18 January 2005 08:04
|
|
Yeah, I've been keeping an eye on that thread, and its locked away for safe keeping.
Will PM you.
|
|
|
