155 won't start. No signal to fuel pump relay
Hi everybody. I've had some issues with my 155 lately. It has been stored in a warm garage for about 5 months. Just had a full repaint job and didn't want to use it in the winter with all the salt here in Norway.
Car: Alfa Romeo 155 1,7TS Skinny 95MY with immobiliser.
Anyway. I parked the car, and when I was trying to start it again, the startermotor was working, but it didn't want to start. So, after 3 attempts, I found out that the fuel pump isn't running. Checked cables on pump = ground on both.
Found the fuel pump relay right next to the battery, checked all relays. Everything is fine. Cheched that there's supposed to be a ground- signal from the ECU to the relay to make the pump kick in. Hotwired this relay and the pump is working like a charm and engine fired right up.
So, since I'm missing the signal from the ECU I checked the contact on the ECU. The wire from the connetor on the ECU to the fuel pump relay is not broken.
Checked the inertia switch under the seat. A bit high resistance on both cables 5 ohm and 8 ohm, so I hotwired in on the ECU contact directly with no luck.
Does anybody have ANY clue on this one? I can make the car work, but I'm a bit worried since my hotwiring on the relay makes the pump go all the time when the keys are in the MAR position. Normally it starts up and stops after 5 seconds or so. I don't want to drive that car. Because, in a crash the pump would just keep pumping fuel... The hotwiring I have done overrides both the ECU and the inertia switch.
Sorry for my bad english and explenation.