Alain - The Red Scorpion
True Classic
Thx. Found it and it's OKThe fuse is in an inline fuse holder on 80-84 cars. It is in the newer fuse box for IAI Bertone cars..
Thx. Found it and it's OKThe fuse is in an inline fuse holder on 80-84 cars. It is in the newer fuse box for IAI Bertone cars..
Yes, movingA really stupid question. Have you verified the timing belt is actually moving?
Not that I would have any experience on this
Get the FI trouble shooting document, I believe its available on this web site. It will run through a complete testing of the FI systems to pin point the problem. Its the best way to start getting answers on the FI. If you want the PDF file and can't find it I can send it to you.Further testing -
Ignition: there is spark
Fuel pump and filter: both OK
Injection system ground wire on valve cover: yes, connected
Injector plugs: battery voltage at both connectors with ignition ON.
Injector testing with test light (and voltage meter): there is no flicker when I crank the engine. Does this mean the injectors are not getting signal from the ECU and that the ECU is bad? Could it me something else? How do you test the ECU?
The pulses are rather short, so you might not be able to see any flicker with an incandescent test light. I would suggest getting a noid light for this.Further testing -
Ignition: there is spark
Fuel pump and filter: both OK
Injection system ground wire on valve cover: yes, connected
Injector plugs: battery voltage at both connectors with ignition ON.
Injector testing with test light (and voltage meter): there is no flicker when I crank the engine. Does this mean the injectors are not getting signal from the ECU and that the ECU is bad? Could it me something else? How do you test the ECU?
Yes it may be possible as it can make it run rich. This is a very common 124 FI issue, they run like crap if the sensor or its wiring goes bad. I can’t say I have heard of it causing the engine to suddenly shut down.I am also told that the Bosch Coolant Temperature Sensor (photo) could cause the problem. If defective, can this sensor shut down a running engine?
I tested resistance as indicated in FI Guide. I get 2900 ohms which means that the sensor is OK. Also tested Air Flow sensor, as per Guide:Yes it may be possible as it can make it run rich. This is a very common 124 FI issue, they run like crap if the sensor or its wiring goes bad. I can’t say I have heard of it causing the engine to suddenly shut down.
These PDFs cover what it does. Not really a debugger but knowing what it is supposed to do helps figure out what it is not doing.I tested resistance as indicated in FI Guide. I get 2900 ohms which means that the sensor is OK. Also tested Air Flow sensor, as per Guide:
Terminal 6 to 8: 330 ohms.
Terminal 7 to 8: 265 ohms.
Terminal 8 to 9 193 ohms.
Guide says: Terminal 6 to 8: not more than 600 ohms. Terminal 7 to 8: not more than 1200 ohms. Terminal 8 to 9 350 ohms. So I guess, I'm OK?
Next, how do I test the Dual Relay?
I was happy to see the overall problem was found and resolved. Unusual to have one jump.No-start problem solved. The timing belt had jumped 4 teeth... Changed the belt, aligned crank and camshaft and distributor. After some cranking the engine started and is running smoothly. Why did it jump? Don't know, but I'll keep a close eye and will re-ajust tension in a few days. Thank you all for your input.