86 Alfa Spider Veloce Ignition Computer (Behind Driver and Passenger Seats) - Page 2 - Alfa Romeo Bulletin Board & Forums
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post #16 of 39 (permalink) Old 05-11-2017, 02:19 PM Thread Starter
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Ok. I'm sorry. Just getting frustrated about it. Just a lot of confusion.
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post #17 of 39 (permalink) Old 05-11-2017, 02:24 PM
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Ok. I'm sorry. Just getting frustrated about it. Just a lot of confusion.
Understood. The L-Jet system can be very frustrating because when one piece stops working, the whole thing stops working. And that makes it difficult to figure out which piece stopped working first.

Rich

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'17 Giulia Ti Sport
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post #18 of 39 (permalink) Old 05-11-2017, 03:44 PM
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Some cars have OBD1, some cars have OBD2, the L-jet spider is OBDnone! Where are you located?

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post #19 of 39 (permalink) Old 05-11-2017, 03:51 PM
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One more thought, if the car doesn't crank (the starter doesn't turn) when hot, it could be the starter and or ignition switch, but the most prudent option is to install a relay between the ignition switch and the starter in the engine compartment. You can find kits for $20 on ebay for BMW 1600-2 / 2002 that work just fine.

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post #20 of 39 (permalink) Old 05-11-2017, 03:56 PM Thread Starter
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starter does turn. I am located in Oakland, CA area.
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post #21 of 39 (permalink) Old 05-11-2017, 03:58 PM Thread Starter
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What are OBD1, OBD2 and OBDnone. Are they fuel computer#'s
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post #22 of 39 (permalink) Old 05-11-2017, 04:15 PM
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Forget about the OBD stuff, He was just being funny...You dont have it.. The Fuel Computer is sitting down Flat,Black most times, The Ignition one is on its side.Silver looking.

If possible next time , See if you have Spark when it happens, you can use a spare plug in one of the ignition wires and crank the car, you SHOULD see a spark from that plug.. If you do its not the ECU(computer). If there is no spark you have a ignition issue. If you have spark then you have a Fuel problem MAYBE.. but it will eliminate the Ignition Computer or ECU..
Find a mechanic who understands older cars and will talk to you in regular terms so you can explain what he said...
Good luck...

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Rob S,Cur,84 Spider,,91 164l,Prev 01 XK8,77 spider,87 Milano,91 164L ,81 Spider,81 380SL,63 BJ8 Healey, 76 Spider,79 Spider,90 quad spider.348 Ferrari spider.Harleys
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post #23 of 39 (permalink) Old 05-11-2017, 04:28 PM
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If the wrong computer was installed I'd think the problem would show up right away, not months later.
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- - Eric
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~ 1984 Spider Veloce ~
- -~ 1981 GTV-6 ~
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post #24 of 39 (permalink) Old 05-11-2017, 04:31 PM
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Find a mechanic who understands older cars and will talk to you in regular terms so you can explain what he said...
And who rationally diagnoses a problem, not what it 'feels' like.
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post #25 of 39 (permalink) Old 05-11-2017, 04:41 PM
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Forget about it being one of the computers. If the car always starts and idles fine when cold, but does not when hot, it's most likely a sensor or one of the cold/warm devices.
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post #26 of 39 (permalink) Old 05-11-2017, 05:11 PM
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Since you are in the Bay area other members should be able recommend a local Alfa specialist who has experience with L-jet.

OBD stands for On Board Diagnostics, became a mandated requirement with the 1991 model year (CA)

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post #27 of 39 (permalink) Old 08-01-2017, 01:36 PM Thread Starter
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Hello Guy's

Thanks for the messages. where I am today. Both ECU'S were replaced and the car cranked right up and I let it run for 15 minutes to reach temperature. I then turned it off waited about a half hr. Repeated the process (car ran again) but this morning and up to now the car does not crank and there's no spark. Could you tell me the problem?
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post #28 of 39 (permalink) Old 08-01-2017, 01:52 PM
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Again, to be sure we understand, what does & does not happen when you say 'the car does not crank'?

If you mean you turn the key to the 'start' position but nothing happens (the starter does not activate & the crankshaft does not turn) then I'd start looking at adding a relay for the starting circuit. When it gets old the Alfa ignition switch cannot carry the current required to activate the starter solenoid - turn the key to 'start' and sometimes it works and sometimes it doesn't. And the doesn't gets more & more frequent. Adding a relay means the switch only has to carry a tiny amount of current to activate the relay which can easily carry the load.

If you turn the key to 'start' and there is a single click but no action then it is likely the starter motor &/or solenoid has failed. Sometimes it'll work when cold but not when hot. But eventually it'll not work at all. One easy test is to switch on the headlights and watch them when you turn the key to start. If they stay bright then no electrons are getting to the starter. If they go very dim - nearly off - then electrons are getting to the starter but it is not working properly.

Before you spend any time or money on the above step one is to remove, clean & secure all the connections in the battery to starter circuit. Sometimes an iffy connection will work when cold but not when hot. Don't assume they are good by looking & wiggling - remove, clean & secure. Including the ground cable's connection to the body - sort of out of sight behind the battery.

- - Eric
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~ 1984 Spider Veloce ~
- -~ 1981 GTV-6 ~
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post #29 of 39 (permalink) Old 08-01-2017, 02:07 PM Thread Starter
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I turn the key and it starts. The cars is ready to be put in gear and ready to roll! is what I mean. The car is running!
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post #30 of 39 (permalink) Old 08-01-2017, 02:09 PM Thread Starter
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The starter activated and crankshaft turned.
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