Weird Wires

V480t · Post by **V480t** » Mon Mar 08, 2004 5:36 pm

I have some doubts about some wires and i would like that someone could explain me this:
-my 89 turbo has 3 loose wires on the plug of the ecu(the one on the passenger side/left drive).these wires are yellow/red and yellow/? and the 3rd wire is brown i think...
The 2 yellow wires have a male plug and the brown has a female plug.
My question is what r they for????
My next doubt was in another post but noone answered

and goes like this:
My airmass meter has 6 pins on the connector but i have 7 wires and found that one is disconnected.this wire is ground connected and on the connector i have 2 ground wires.Should i connect this loose wire to one of the 2 ground wires on the connector?If so wich one?

PS:whats suppost to happen when u disconnect the airmeter plug?
I think mine is broken but the resistance values r good.Is there another way to check it?

I would be most grateful if someone could help me...

dragon · Post by **dragon** » Mon Mar 08, 2004 5:47 pm

V480t wrote:
PS:whats suppost to happen when u disconnect the airmeter plug?

When you unplug the electrical connection, the car should stutter, as if it was going to stall, but then recover, but then run a little rougher.

With the connection in place, undo the air hose behind the meter (i.e. the side closest to the cabin, not the airbox side) - with the electreical connection in place, the car should stall as soon as you open the air pipe. With the connection removed, you should be able to open the air pipe without a stall - this might help your diagnosis.

king_j · Post by **king_j** » Mon Mar 08, 2004 6:32 pm

is this the engine ecu or the cem?

V480t · Post by **V480t** » Mon Mar 08, 2004 8:00 pm

I think it is the ecu.My 89 turbo is left driven and the plug that i talk about is on the passenger side footwell.
I hope this helps because i canÂ´t explain it better.
Thanx!!!

bbf · Post by **bbf** » Mon Mar 08, 2004 10:11 pm

those 3 wires are for diagnisys. ther are left open.

V480t · Post by **V480t** » Mon Mar 08, 2004 11:20 pm

But, what kind of diagnosys?
Can i use them myself or are they to be used with special equipment?

bbf · Post by **bbf** » Tue Mar 09, 2004 9:13 am

the one you can't do it your self, like in S or ES

V480t · Post by **V480t** » Tue Mar 09, 2004 9:27 am

Oh pity!!Ok thanks guys!

V480t · Post by **V480t** » Thu Mar 11, 2004 10:00 am

Its being difficult to find an used airmass meter.Are there any other cars that use the same airmass meter(apart from 440/460)?
New ones at Volvo are really very expensive

And the problem is that iÂ´m not even sure if thatÂ´s the problem.Yet.
ItÂ´s all about the cold start and loss of power running on petrol.If i drive lpg the cold start is the only problem(i have to wait until the engine is warm with my foot on the pedal).
What if i buy that part at Bosch?Are they cheaper there?Or do they even sell it?
I want my car to get painted but i wonÂ´t until itÂ´s all mechanically perfect.

4nimal · Post by **4nimal** » Mon Mar 22, 2004 7:08 am

I've heard that, the air flow meter can wear out. After a time it becomes bad.
Despite of it's being expensive, I would NOT prefer buying a second-hand one...

Mark 480s · Post by **Mark 480s** » Mon Mar 22, 2004 12:44 pm

The Air mass meter on the Turbo looks very similar to the one in my Volvo 940 Turbo. If you have got a part number I will check if its the same

Regards

Mark

Volvo 480 Club Europe

Weird Wires

Weird Wires

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