Volvo Community Forum. The Forums of the Volvo Owners Club

Forum Rules Volvo Owners Club About VOC Volvo Gallery Links Volvo History Volvo Press
Go Back   Volvo Owners Club Forum > "Technical Topics" > PV, 120 (Amazon), 1800 General

Notices

PV, 120 (Amazon), 1800 General Forum for the Volvo PV, 120 and 1800 cars

Information
  • VOC Members: There is no login facility using your VOC membership number or the details from page 3 of the club magazine. You need to register in the normal way
  • AOL Customers: Make sure you check the 'Remember me' check box otherwise the AOL system may log you out during the session. This is a known issue with AOL.
  • AOL, Yahoo and Plus.net users. Forum owners such as us are finding that AOL, Yahoo and Plus.net are blocking a lot of email generated from forums. This may mean your registration activation and other emails will not get to you, or they may appear in your spam mailbox

Thread Informations

P1800 Rev Counter not working

Views : 4800

Replies : 4

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old Dec 6th, 2007, 00:18   #1
Unsaintly
New Member
 

Last Online: Nov 15th, 2016 21:52
Join Date: Nov 2007
Location: Aylesbury
Default P1800 Rev Counter not working

Hello
I am the proud owner of a 1963 P1800. See below
It's dark blue with a red interior, but it has a rev counter that does not rev!
I took it to a Automobile Electrical Specialist today to see if they could sort it out or give me some guidance on sorting it out.
They had a look at the wiring diagram and the car and told me they couldn't find the tachometer sender that the distributor is connected to before it connects to the tachometer.
Does anyone know where this tachometer sender is located and what it might look like?
I suppose I can get a new or second hand one from somewhere?

The wiring diagram just says "P1800 models" so I suppose there could be alternative layouts for such things.

Any advice or suggestions warmly welcomed.
Many thanks
Charlie
Attached Images
File Type: jpg UPR in Park2.jpg (223.6 KB, 23 views)
Unsaintly is offline   Reply With Quote
Old Dec 6th, 2007, 01:50   #2
Ron Kwas
Premier Member
 
Ron Kwas's Avatar
 

Last Online: Today 01:38
Join Date: Jul 2007
Location: Connecticut, USA
Default

Charlie;

Welcome to the Forum!


P1800s had two versions of tachs, differentiated in that the earlier ones had a seperate sensor module, usually located in front of the radiator. I have little experience with the earlier one. If this is the type you have, others will have to help.

Later ones had the sensor internal...sensing was done without a direct electrical connection...the points wire strictly makes two loops through a bracket secured by a nut on the backside of the tach, which allows inductive coupling to transfer IGN pulses to the circuit. The circuits are known for quiting as the calibration potentiometer inside opens due to poor connection from age. I have writen this up before...see: http://www.sw-em.com/service%20notes.htm#Gauges ....but I suggest urge you first assure everything external to the tach is as it should be, before molesting the tach to gain access to its insides. Internal circuits are easily found with a search.

Good Hunting! Greetings from new England!
Ron Kwas is offline   Reply With Quote
Old Dec 6th, 2007, 19:43   #3
mike gilbert
Master Member
 

Last Online: Today 09:36
Join Date: Dec 2003
Location: Peterborough
Default

Your car should have the earlier more complicated system. Best bet if you can find one is to fit a later rev counter if yours is playing up.
mike gilbert is online now   Reply With Quote
Old Jan 28th, 2008, 18:29   #4
wolfie
Junior Member
 

Last Online: May 7th, 2010 12:41
Join Date: Dec 2004
Location: Steelpoort
Default

I took on the task of oppening. Canabalised a VDO unit from a BMW E30 and modified it to fit. Internals almost a 100% fit. Still a massive and delicate task. Can not see that it is modified, works of the distributer now,,,,,,,,,,100%
wolfie is offline   Reply With Quote
Old Jan 29th, 2008, 11:26   #5
mountain
Member
 

Last Online: Aug 25th, 2019 12:51
Join Date: Dec 2004
Location: clonakilty, west cork
Default

Hi,

I sent mine to rob at amazoncars to have it rebuilt, takes about 8 weeks however, and costs about 120stg. Give rob or emma a call anyhow, very nice people to know when you have an 1800. 0044 1379 388400

Michael Courtney
mountain is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 10:15.


Powered by vBulletin
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.