Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[zirk]

From underneath theres 2 small clips either side holding the cover on, get a small blade / knife in either side and cover should come off.

Do it to relay that you have just been measuring.

[Agemo]

OK, cover off. The contacts are lovely. This is the one that is off the car, I will change it over & look at the other one

[zirk]

Did you measure each GP resistance to neg, 1 to 2 ohms each.

Sound like its dropping from 12 to 3.2 v through the relay to me, does the relay measure open / short when you press the contacts together.

[Agemo]

OK, I have put the cover back on the relay, and refitted it. It still reads 3.5 volts, IGN on or off. Not measured ohms at GPs yet.

[Agemo]

Readings have been identical with both relays. You will have to talk me through the "does the relay measure open / short when you press the contacts together."
I assume I fit the relay, then test while closing the points at the same time? (Like rubbing head & patting belly) 

[zirk]

We are measuring the right pins here, as you pull the top plug off theres 6 thick pins that are all connected to together?

[Agemo]

OK, I have the relay fitted, meter between earth and the six pins to the GPs, it is reading 3.5 volts. When I close the points, it goes up to 13 volts.
On turning the IGN on, something goes clunk in the triangular box.

[zirk]

OK, I have the relay fitted, meter between earth and the six pins to the GPs, it is reading 3.5 volts. When I close the points, it goes up to 13 volts.

Its the 3.5 V bit thats throwing me now, been a couple of years since I played with these TD's, in theory from memory it goes battery connects directly to relay (via small red cable and 8mm nut, so 12 volts all the time on one side of the relay contact, which simply switches the GP's on off. not convinced where the 3.5v is coming from on the GP side (assuming the relay contacts are not arced or stuck together.

[zirk]

Whilst you where doing tests, was the inlet manifold warm or hot?

[Agemo]

Your memory seems spot on. Red wire looks like it feeds 12v, the contacts gives or stops current to the GPs. The contacts are like new. Not sure how I get 3.5 volts either.
This is the original relay, the one I tested & stripped, it worked perfectly this morning.

[Agemo]

Whilst you where doing tests, was the inlet manifold warm or hot?

Cold, engine not been run for seven hours.

[zirk]

Diss the plug again, measure each GP (+volts) and ground all should be 0v.

Did you manage to measure each GP resistance yet (1 to 2 Ohms).

[Agemo]

Diss the plug again, measure each GP (+volts) and ground all should be 0v.

Didn't quite understand your banter there, sorry, do you mean measure at the six pins?

Did you manage to measure each GP resistance yet (1 to 2 Ohms).

No, not yet, will do it now.

[zirk]

Diss the plug again, measure each GP (+volts) and ground all should be 0v.

Didn't quite understand your banter there, sorry, do you mean measure at the six pins?

Did you manage to measure each GP resistance yet (1 to 2 Ohms).

No, not yet, will do it now.

No sorry, probably me thinking out loud, measure each lead that connects to each GP, trying to work out if theres any stray voltage floating around somewhere.

[Agemo]

OK mate, just trying to keep up with you. I have checked the lead, at two of the GPs, zero volts. This was with contacts open of course.