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bmerguy · 12-07-2009, 09:30 PM

I have an 86' L7 with speedo problem. I had it rebuilt by good source. I have replaced transmission sending unit on differtial..no change. I am thinging circuit board ob tranny indicator behind cluster.

**Blackice** · 12-10-2009, 12:58 AM

Could be a few things, like the plug that is attached to the sensor @ the diff. That is what was wrong with mine. Looked fine, but the wires were broken. Where the plastic ends.

Do you have an meter ?

bmerguy · 12-10-2009, 11:48 AM

Hi Blackice,

I changed the sending unit on differential, but I am going to check to see if it's sending a signal. No oscope, but was told the signal should show on a basic test light tool. I should get some power indication. I bought a used sending unit, so it may be bad too.

I will check the wires and connection too. If it is good, where should I go from here?

Appreciate your help Blackice.

Thanks.

Bmerguy

12-07-2009, 09:30 PM	#1 (permalink)
bmerguy newbie Name: norman Joined: Dec 2009 From: PHoenix, az Posts: 3 iTrader: 0 Thanks: 0 0 Times in 0 Posts	Needs some help..speedo prob! I have an 86' L7 with speedo problem. I had it rebuilt by good source. I have replaced transmission sending unit on differtial..no change. I am thinging circuit board ob tranny indicator behind cluster.

12-10-2009, 11:48 AM	#3 (permalink)
bmerguy newbie Name: norman Joined: Dec 2009 From: PHoenix, az Posts: 3 iTrader: 0 Thanks: 0 0 Times in 0 Posts	speedo issue... Hi Blackice, I changed the sending unit on differential, but I am going to check to see if it's sending a signal. No oscope, but was told the signal should show on a basic test light tool. I should get some power indication. I bought a used sending unit, so it may be bad too. I will check the wires and connection too. If it is good, where should I go from here? Appreciate your help Blackice. Thanks. Bmerguy

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12-10-2009, 12:58 AM	#2 (permalink)
Blackice Moderator Name: Dave Joined: Oct 2007 From: North Vancouver Posts: 1,088 iTrader: 0 Thanks: 43 47 Times in 46 Posts Blackice's pictures '91 BMW 318i '91 BMW 318IS	Could be a few things, like the plug that is attached to the sensor @ the diff. That is what was wrong with mine. Looked fine, but the wires were broken. Where the plastic ends. Do you have an meter ?

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Needs some help..speedo prob!