1982 308 GTSi No Start - But runs great when it does.

My 1982 308 GTSi (USA Model) will not start.
But when I'm able to get it started it runs great.

Before you blast me for not using the search function, I did.
I've read a ton of threads but I'm still at a loss.
I'm not a great diagnostician nor a great mechanic.
So please constructively help.

Here's what I've done so far:
1) I checked the fuse for the fuel pump. It's good. (BTW, the fuse blocks have been upgraded to the units sold by Cowboy Motors, LLC)
2) Confirmed that both relay "H" (Relay for Fuel Pump) and relay "P" (Relay for start injector) both trigger when the key is turned but not started. However, the fuel pump does NOT turn on.
3) With the key on but not started, I pulled the plug on the "airflow sensor safety switch". Again, the fuel pump does not come on.
4) I put a jumper on the connector for the "airflow sensor safety switch" wire. The fuel pump does not come on.

Last night when I was doing all of this, I disconnected the "airflow sensor safety switch" and turned the key. She fired up immediately. I let her run for a while, shut her off, then tried to restart her......Nothing!

I got the most information from this thread:
https://www.ferrarichat.com/forum/threads/82-308-gtsi-fuel-pump-runs-when-key-turned-to-position-2.448599/

So I'm guessing that the "airflow sensor safety switch" is bad or intermittently failing.

Is what I have circled the entire "airflow sensor safety switch"?

If so does anyone have a part number?

Is there anything else I should check?

If the car is hot or cold makes no difference.

Thanks in advance!!
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@Steve Magnusson
Ok I'll "borrow" a relay from the headlight position.
Will advise.
Thanks

 

@Steve Magnusson
You nailed it!!!!
Swapped the same relay from the one of the headlight motors into position "P".
Tapped the key and she fired right up!
Thank you!!!

What pisses me off a little is that I paid my mechanic to figure out why this was happening and he charged me $350 for his time and a relay for position "H", and the problem was back a couple days later.

Follow up question......
Except for the one my mechanic replaced all the relays look original.
Would you recommend replacing them all with modern units?

I'm hoping there is a chart somewhere in the forum that shows me the Bosch numbers for modern relays.
My mechanic put a Bosch 0 986 AH0 251 in position "H" so I'm assuming that is a modern replacement for the "113" relay.

 

@Steve Magnusson
How about I buy you a few beers next time you are in Philly?

I may replace the fan relays as well, just to be safe......

 

These relay part numbers are driving me crazy.
The owners manual does not show what relay is needed for the Fuel Pump and the Start Injector.
The one I have in the Fuel Pump (the one the mechanic installed) is 0 986 AH0 251 and that works.
The one that was in the Start Injector was 0 332 204 101 and is now as I swapped it from the Headlight Lifting Motor and it works.
My research shows: 0 332 014 113 = 0 332 019 151 = 0 986 AH0 251 --------- BUT I'm not sure.

Ferrari Relays Bosch Current # Bosch New # Newer # ??? Function
A ITALMEC 062 ? Direction Light Intermittence
B 0 332 014 113 0 332 019 151 0 986 AH0 251 Radiator Left Fan
C 0 332 014 113 0 332 019 151 0 986 AH0 251 Right Radiator Fan
D 0 332 014 113 0 332 019 151 0 986 AH0 251 Right Radiator Fan w/AC
E 0 332 015 006 0 332 015 006 ? External Lights
F 0 332 014 113 0 332 019 151 0 986 AH0 251 Brake Warning Lights
G 0 332 014 113 0 332 019 151 0 986 AH0 251 Unfastened Safety Belts
H ? 0 986 AH0 251 ? Fuel Pump
I 0 332 014 113 0 332 019 151 0 986 AH0 251 Windows Motor
L 0 332 014 113 0 332 019 151 0 986 AH0 251 Horn
M 0 332 204 101 0 332 209 151 ? Headlight Lifting Motor
N 0 332 204 101 0 332 209 151 ? Left Headlight Lifting Motor
O 0 332 204 101 0 332 209 151 ? Right Headlight Lifting Motor
P 0 332 204 101 0 332 209 151 ? Start Injector

Can someone:
Check my work?
Fill in the "?" ?

 

My chart got mangled in my post.
Here's a screenshot of the spreadsheet.

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Image Unavailable, Please Login Never mind.....
I just got off the phone with Bosch.
These are 100% correct.

 

@Imatk - No problem.
@Steve Magnusson - Thanks for all your help.
If the admins want me to send that spreadsheet, please reach out.

 

Just to close this out.....
The relay on the start injector was the culprit.
Replaced it and it fires up on the first tap of the key.
I also replaced all the rest of the relays.
Everything works great!
Thanks for the advice!

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