Dash lights on

[DBA]

Spent 5 hours on Sunday refurbishing my power steering pump (89 S2), mind you 2 hours of that was spent trying to get the pump off. When I had put it back together took it for a test drive - and my headlights would not come up, had to manually raise them, then they stayed up.
Thought nothing of this, and planned to look at the fuses/connections today.
When I looked at the car today the battery was totally (ie zero volts) flat.
Put battery on charge (disconnected negative) for 6 hours and returned.
On connecting the battery the dash lit up like it does when you initially turn the key - but this was with the key in my pocket.
I was able to start the car, and it ran OK
When I switched the ignition off it overran for about 5 secs, and all lights came on
Did not have time/light to investigate further. I cannot see any logical link with the power steering pump removal - there are no connectors in that area.
I am currently thinking it could be an ignition switch issue or perhaps DME relay. I have also read that in a 964 this could be a symptom of Ignition coil/lead issues.
I will look at this at the weekend, if anyone can offer any ideas before I splash out on dme relay or ignition leads I would appreciate it

Anthony

 

[robwright]

Could just be a random coincidence mate. My first thoughts would be the ignition switch. The switch does effect the headlights as I am sure they will not pop up if the ignition is off. I would also check all our your earths. Electrickery can behave in funny ways when earths are not right. Weird one mate don't envy you [8|]

 

[Mike_Pollock]

Hi Anthony
With Rob, prob simple fix but a b##@#@ to find, certainly dont envy you with it.
Would check for trapped / damaged wires around the steering pump / lifter motor area as this is the recently worked area, could have disturbed something.
Good luck
Mike

 

[zcacogp]

Initial thought would be an earth has been dislodged. Are there any around that part of the engine bay?


Oli.

 

[DBA]

Thanks all for the advice. To update on progress:-
I have spent yesterday and most of today trying to track down the problem.
There are no earth points near the power steering pump, and only a couple of electrical connections, so I think it is a coincidence.
So far I have found that if Fuse 2 (headlight motor power) is in place the ignition 15 relay is activated, which lights up the dash, and drains the battery. If I remove fuse 2 everything is OK, apart from the headlight motor.
It looks like fuse 16 had blown (this is for the raise headlight switch), and I raised the headlights manually which in some way has caused the issue now evident. I did not realise that before raising the headlights manually you shoud remove the fuses.
My working hypothesis is that raising the headlights has fed back to somthing. I plan to chack the hazard switch, headlight switch and possibly the ignition switch.

Anthony

 

[Porka944s]

That sounds suspiciously similar to my problem, i just spoke to RPM and Oli said sounds like the ignition switch. Im getting them to look at it next week, as ill mess it up more than likely.