Technical Car wont start, no light On noid test, wiring checks fine

[Larry Keck]

Hi, 1981 fiat spyder FI just about all new relays and sensors, test light for noid on FI not coming on, i did use fiat manual and wires test fine,
it says replace ECU..

 

[bugsymike]

Hi, 1981 fiat spyder FI just about all new relays and sensors, test light for noid on FI not coming on, i did use fiat manual and wires test fine,
it says replace ECU..

I don't know much , but at that age it has to be a fairly basic ECU system , possibly by Marelli, Femsa, Weber 1AW even Digiplex.
So if you give the details from the ECU maybe someone here will have the Pin Outs to test etc.
Are you saying there is no signal on one cylinder using noid lights on the injectors or something else?
A bit more detail may help some one on Forum to provide a suggestion.

 

[Larry Keck]

I don't know much , but at that age it has to be a fairly basic ECU system , possibly by Marelli, Femsa, Weber 1AW even Digiplex.
So if you give the details from the ECU maybe someone here will have the Pin Outs to test etc.
Are you saying there is no signal on one cylinder using noid lights on the injectors or something else?
A bit more detail may help some one on Forum to provide a suggestion.

Yes tested Number 1 cylinder, now without noid, and just turning on car ign there is power to the FI plug on both sides..

 

[Larry Keck]

Yes tested Number 1 cylinder, now without noid, and just turning on car ign there is power to the FI plug on both sides..

I have pin outs , Im going to do continuity test on the temp sensor.. past owner had some wires mixed up. ( he had number 1 wire from ecu on the ground lug on fender wall, where it was supposed to go on coil - side.. )