OK, it's my 10th day with my Alfa and it's definitely the most special thing I have driven so far. But here's an "Alfa soul" thing I presume.
I searched the forum with "Selespeed odd gears" and "Selespeed even gears" but mostly found those problems in addition to dropping to neutral and/or not engaging at all. My problem is sporadic.
My 2003 156 Selespeed skips odd numbered gears when:
1. It's rained a lot at night
2. It's too humid in the morning
It will lose 1st, 3rd and 5th gears in the morning. Once it's driven a few kilometers, it goes back to normal. 2nd, 4th and reverse gears are OK at all times. So if this problem happens, it will try 1st gear a few times, fail, select 2nd gear and pull of with that; than after I pick up speed it will try 3rd, fail, then engage 4th. After a few kilometers on the motorway, it engages 5th alright. No problems until next morning.
It becomes too humid where I live, so I assumed it's a relay or contact problem. I thought humidity would interfere with relay contacts and when the engine compartment gets sufficiently hot, water would vaporize from contacts so it would return to normal. I removed the relays in front of the battery and thoroughly cleaned their contacts. No luck. Next humid morning, same problem again.
Pump priming after I open driver's door takes 15 seconds in the morning. I hear clicks from the right of the car (it's a LHD one) every second or third gear change, which I think indicate the pump coming on and off. The mechanic who checked the car the day I bought it tested and "reset" the Selespeed system and said Selespeed system was OK. The pump is not in its prime but I think it would fail to engage even gears and/or drop to neutral while driving etc. if it was the pump. It only fails with the odd gears.
1. Where are those Selespeed relays? The ones in front of the battery say they are about fan etc., is that correct?
2. There are 2 black and 2 red "micro" relays and a large 50Amps relay in front of the battery. Which is responsible for odd gears, if they are Selespeed relays?
3. Does anyone know how much amps the black ones are rated for? Red ones are rated 30Amps, the large one is 50Amps. I have a few 20 Amps 12V mini relays that will fit, I could try replacing them one by one if they are 20Amps.
4. Any other ideas?
Thanks in advance.