Another 'lectric problem!

cbrr3 · Sep 22, 2010

Just failed an MOT!!!

Literally overnight, the left indicators have started to flash very quickly so Mr MOT gave me a red piece of paper

I got home and checked all three lamps, cleaned the contacts but still the same problem. The right indicators operate fine and when I put on the hazard lights, both sides operate fine.

I've done a search and can't find anything similar to this problem.

Any pointers to this problem?

Cheers
Rob

wickford90 · Sep 22, 2010

cbrr3 said:
Just failed an MOT!!!

Literally overnight, the left indicators have started to flash very quickly so Mr MOT gave me a red piece of paper

I got home and checked all three lamps, cleaned the contacts but still the same problem. The right indicators operate fine and when I put on the hazard lights, both sides operate fine.

I've done a search and can't find anything similar to this problem.

Any pointers to this problem?

Cheers
Rob

might be your relay

cbrr3 · Sep 22, 2010

Relay or flasher unit? I'm understood to believe that left/right/hazards use the same so ruled that out.

Cheers
Rob

Mr Noisy · Sep 22, 2010

yeah its just a switch that swaps the circuit, its the same flasher circuit.

must be a bad connection.

when it starts flashing fast, whip more bulbs out and see if it gets faster or makes no difference.

the one that makes no difference is your faulty circuit.

cheers

nrgserv · Sep 22, 2010

cbrr3 said:
Just failed an MOT!!!

Literally overnight, the left indicators have started to flash very quickly so Mr MOT gave me a red piece of paper

I got home and checked all three lamps, cleaned the contacts but still the same problem. The right indicators operate fine and when I put on the hazard lights, both sides operate fine.

I've done a search and can't find anything similar to this problem.

Any pointers to this problem?

Cheers
Rob

theres 4. sounds like ones duff.
front ,rear, repeater on wing, dash.

smarty1972 · Sep 22, 2010

nrgserv said:
theres 4. sounds like ones duff.
front ,rear, repeater on wing, dash.

Five on some, i back bumper,1 back light unit.1 front 1 side repeater 1 dash

nrgserv · Sep 23, 2010

smarty1972 said:
Five on some, i back bumper,1 back light unit.1 front 1 side repeater 1 dash

cheers. same as mine. doh.

cbrr3 · Sep 23, 2010

To be precise, there are five on mine -
Front
Side
Rear
Dash + trailer light.

When I remove any of them (front/side/rear) they still flash at the same rate - bloody quick!

alexdon · Sep 23, 2010

How many rear indicators do you have, 2 or 4? If I remember correctly (not easy at my age) someone had a problem with the upper light cluster because It had been changed from not having an indicator to having one, if you see what I mean. Not much help but.....

Mr Noisy · Sep 23, 2010

Gonna have to try a relay tbh. Can you borrow off a mate?

AndyPoole · Sep 23, 2010

Quick Tip

You could wire an additional bulb in to the system inside the car to produce an extra load and slow the indicator down

nrgserv · Sep 23, 2010

bad earth time if all appear to working.
put the bad side on, then check all other lights for signs of lighting up. (might have to stick yer eye right up to lens to see the quick glow of a lamp filament)

bad earths can be a twart to find and cause wierd symptoms.

CharlesY · Sep 23, 2010

Make SURE the rear lamp cluster is properly EARTHED.

Bad earth there is a classic cause of all sorts of problems.

CharlesY

Scruffyhippo · Sep 23, 2010

Usally bumper or tow bar connections, would check that first then relays if all working

tosh · Sep 23, 2010

It's just a thought and I'm probably very wrong but would a fault on a tow bar loom make the flashers faster, I was just thinking that if all the bulbs are working and all are bright then a bad earth wouldn't increase the resistance of which this points too.
Scruffy beat me to it.....WHAT HE SAID ^^^^^^^^^....

nrgserv · Sep 24, 2010

tosh said:
It's just a thought and I'm probably very wrong but would a fault on a tow bar loom make the flashers faster, I was just thinking that if all the bulbs are working and all are bright then a bad earth wouldn't increase the resistance of which this points too.
Scruffy beat me to it.....WHAT HE SAID ^^^^^^^^^....

it would if it current were travelling thru another light unit and down another earth path.
thats why i said look closely for other lamps glowing.

only way towing electric will make faster flashes is if theres a short.
(unless trailer boards plugged in, then theres even more possiblity of a bad earth!)(or short)

GRATCH · Sep 24, 2010

Check all the bulbs are of the correct wattage (not voltage) as this could fool the circuit into thinking a bulb has blown and flash fast.

nrgserv · Sep 24, 2010

GRATCH said:
Check all the bulbs are of the correct wattage (not voltage) as this could fool the circuit into thinking a bulb has blown and flash fast.

presumed they are as it seemed to work prior to mot.
worth a check tho.

mystery · Sep 24, 2010

Would check rear bumper indicators units usually fill with water condensation or bad seal causing short to ground or high resistance on the connection through corrosion (higher load hence rapid flashing)

nrgserv · Sep 24, 2010

mystery said:
(higher load hence rapid flashing)

so when a lamp pops, lessens the load, flashes faster

Another 'lectric problem!

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