i need some help with my 90 corrado
Idle is up and down and wen it does that my screen in the insides goes 0's ( u kno the one that gives u the time and oil pressure) and there's a clicking in or by the fuse box, I just rebuilt my engine and it wasn't doing that... At times the car runs super smooth but then if I turn in off for a wile or for the next day it starts but the idle jumping up and down or it stays at 2000 for I bit then ill come down again.
you probably forgot to reconnect the ground on the driver side of the head. it grounds your
ECU along multiple other things... make sure that's put back, cleaned and with a clean surface on the head... if it is then you may want to consider regrounding that plate with an extra wire from it to the head, a valve cover nut worked fine on my 91 years ago
ECU, Coil and uhh... one other thing ground to this little bracket and then the bracket bolts to the back side of the head. if you dont have 3 grounds here then that is your problem. your ECU is not getting a proper ground causing the piss poor fueling and the loss of signal to the gauges.
cant help you with picks as i no longer own a G60. if you have a Bentley i would star digging for diagrams around the cylinder head sections
The ECU grounds from pin 13 straight to the battery negative post. The car won't even start if that's disconnected. You have four B/W ground wires going to the coolant flange on the head. Hall sensor, idle switch, CTS, and CO Pot.
Idle issues on a G60 are so common, there's a half a billion threads out there covering it. If your idle is jumping up and down, that's usually the ISV or unmetered air getting in somehow.
So I looked and looked and I kno it's not a ground issue and I changed the ISV so it's not, the car stays stable but at times it drops from 2000 to 1000 wile driving but it goes back to normal... Today I was driving it, it was good but as soon as I was on a red light the idle would start jumping up and down from 1000 to 1800 and back to normal...
How exactly have you determined it is not a ground issue?
Check the ground wire(s) that should be going to the side coolant flange on the head (not the ground straps on the hood and valve cover). Check this first, put on a new connector, clean up the wires, and spray some kind of cleaner/ protector on it.
TEST and adjust your ISV, don't just replace it and assume it works.
Blue coolant temp sensor (or wiring)
o2 sensor (or wiring)
Fuel pump(s) (or wiring)
Fuel pump relay
Clean injectors and inspect/ replace injector wiring loom
ECU vacuum line
Vacuum leak (test vacuum per the Bentley for leak)
Super terrible boost leak (use DIY boost leak test from VWvortex)
Black 1990 1.9L Stage 5 G60 - keeper
Corrados decay in a way that can only be measured using quantum physics
Bentley Service Manual: http://wrdusa.com/mm5/merchant.mvc?S...radog60manuals
Will make your life a lot easier
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Is the clock going blank and then coming back on? It gets it's power from circuit 30, Y3 connector, straight from the battery. There's a few other things on that track, as well. Cigarette lighter, pretty much all the switch lighting. Are those things acting stupid, too?