Search found 34 matches

by pgmm
Sat Mar 30, 2013 11:02 pm
Forum: Engine (20)
Topic: Engine Control Systems - Potentiometer
Replies: 11
Views: 2317

Re: Engine Control Systems - Potentiometer

I would assume, since Volvo specifies 1%, that 1% is admissible at the MOT. If you know anyone with a CO meter, you could take a few resistors (say one of each 390, 680, 1500,3300 Ohms) with you to the test, connect each of the resistors in turn and establish CO percentage. Then you know which value...
by pgmm
Fri Mar 22, 2013 8:25 pm
Forum: Engine (20)
Topic: Drive belt !
Replies: 8
Views: 2037

Re: Drive belt !

I just replaced both belts (and the timing belt) on my B18FTM engine with airco (not yet working) - the long 6-track belt is 1555mm long (Volvo part 3473198) and the small 3 track belt (Volvo part 3450074, driving the alternator from the airco compressor) is 600mm. I got mine from eBay, look for 6PK...
by pgmm
Fri Mar 22, 2013 8:11 pm
Forum: Electrical system (30)
Topic: Testing Electronic Speedo
Replies: 12
Views: 3468

Re: Testing Electronic Speedo

The 220 KHz signal (about 0.5V top-top) is only present when the sensor is connected to the (active) speedo electronics. It will be difficult to access the signal in the car, but maybe the connector under the air cleaner box is accessible. The flywheel sensor has a resistance of 220 Ohms (+/- 60) an...
by pgmm
Fri Mar 22, 2013 4:50 pm
Forum: Engine (20)
Topic: Engine Control Systems - Potentiometer
Replies: 11
Views: 2317

Re: Engine Control Systems - Potentiometer

Indeed, a potentiometer is an adjustable resistor, nothing more. A resistor is not specified for voltage but for wattage (the amount of heat it can handle without being reduced to smoke). In this case any 390 Ohms resistor will do, because the value is an input to the ECU and the ECU-input has some ...
by pgmm
Wed Mar 20, 2013 9:21 pm
Forum: Electrical system (30)
Topic: Another 'What's this?'
Replies: 3
Views: 816

Re: Another 'What's this?'

The voltmeter will work properly but the oil pressure gauge requires a sensor to be installed and connected.
by pgmm
Wed Mar 20, 2013 5:49 pm
Forum: Electrical system (30)
Topic: new alternator fitted
Replies: 4
Views: 967

Re: new alternator fitted

You alternator is clearly not charging the battery... Does your charge-light in the instrument panel come on before starting and extinguish as it should with the engine running? Is the (thick red) wire between alternator and battery properly connected (resistance lower than 0,1 Ohms)? Is the earth-c...
by pgmm
Wed Mar 20, 2013 5:43 pm
Forum: Electrical system (30)
Topic: speedo fault... just the 'mileomiter'
Replies: 6
Views: 1228

Re: speedo fault... just the 'mileomiter'

If the speedo indicates (more or less) correct speed and the info centre shows mpg and avg speed, the most likely problem is the small plastic gear that transfers the stepper motor's motion to the milage counters. Remove the instrument cluster from the car, open it and take the speedo unit out. You ...
by pgmm
Wed Mar 06, 2013 9:51 pm
Forum: Electrical system (30)
Topic: Change Speedometer for S40?
Replies: 1
Views: 607

Re: Change Speedometer for S40?

Forget the S40 stuff, use 480 stuff! If it is just about the info center, get one, rather than the complete instruments cluster. The speedos typically fail first, so there must be plenty of info centers lying around. If you currently have analogue gauges for temp and tank, you will need to acquire a...
by pgmm
Wed Mar 06, 2013 9:40 pm
Forum: Electrical system (30)
Topic: Testing Electronic Speedo
Replies: 12
Views: 3468

Re: Testing Electronic Speedo

Speedos come in two versions: early 4 pins throught the printed circuit board and later 5 pin small blue connector. I test my speedos using a spare speed sensor (I'm not sure the flywheel sensor is identical) connected to on yellow/blue connectors yellow6 and blue2 on yellow/red yellow6 and red3 on ...
by pgmm
Sat Feb 23, 2013 1:50 pm
Forum: Electrical system (30)
Topic: Mileometer change - winding it on ?
Replies: 5
Views: 1157

Re: Mileometer change - winding it on ?

If you take the speedometer / milage counter unit apart, you'll see something like this (unit removed from a 1986 480ES) http://www.maathuis.info/images/kmteller.jpg The stepper motor (brown) on the printed circuit board to the left drives the counters. I once used a small drill (dremel tool) with a...
by pgmm
Sat Feb 16, 2013 9:39 am
Forum: Engine (20)
Topic: B18 FT INJECTOR TYPES
Replies: 1
Views: 1035

Re: B18 FT INJECTOR TYPES

The B18FT engine uses Bosch 0 280 150 741 (brown) injectors, 192 cc/min, 16 Ohms resistance
by pgmm
Sat Feb 16, 2013 8:56 am
Forum: Engine (20)
Topic: Engine Control Systems - Potentiometer
Replies: 11
Views: 2317

Re: Engine Control Systems - Potentiometer

The CO-potentiometer has a resistance range from 300-10000 Ohms and tells the ECU to produce 0,5 - 2% CO. Volvo specifies 1% CO for optimal performance of the B18E engine. In my B18E engine the potentiometer is set at about 400 Ohms to produce 1% of CO and if I would need the potentiometer and could...
by pgmm
Sat Feb 16, 2013 8:13 am
Forum: Howto manuals
Topic: Cambelt change
Replies: 13
Views: 12499

Re: Cambelt change

I do not see any pictures (anymore?) - have these been deleted or do I have a problem in my pc?
by pgmm
Tue Apr 03, 2012 9:03 pm
Forum: Electrical system (30)
Topic: Are CEM1 & CEM2 interchangeable?
Replies: 2
Views: 734

Re: Are CEM1 & CEM2 interchangeable?

The short answer is NO - they're not interchangeable as they have some differences in the connections. I don't think the functions differ though and with a few changes in the wiring you might be able to use CEM2 where CEM1 was and vice versa. CEM3 has major differences in the connectors (and functio...
by pgmm
Wed Mar 21, 2012 9:59 pm
Forum: Electrical system (30)
Topic: 86/87 ES Electrical Schemes
Replies: 5
Views: 1287

Re: 86/87 ES Electrical Schemes

Hi Thanks for the link. The ones in there are for 1991 or 1992 - 1994 cars. I believe that 86/87 are different, because the plugs of the instrument panel are not equal, and the instrument panel are not interchangeable. Checkout the bottom document called "Wiring Diagrams" - it has the schemes calle...
by pgmm
Wed Mar 07, 2012 11:39 am
Forum: Electrical system (30)
Topic: 86/87 ES Electrical Schemes
Replies: 5
Views: 1287

Re: 86/87 ES Electrical Schemes

Checkout http://www.k-jet.org/documents/greenbooks/400-series
or send me PM with your mailaddress and I'll send you the pdf - I am using these all the time :D
by pgmm
Wed Feb 15, 2012 2:53 pm
Forum: Electrical system (30)
Topic: 480 ES won't start - instrument panel goes crazy
Replies: 22
Views: 3943

Re: 480 ES won't start - instrument panel goes crazy

Which is exactly where the ECU gets its earth connection from...
by pgmm
Mon Feb 13, 2012 5:56 pm
Forum: Parts, Accessories & Brochures
Topic: Restored rear clusters!!
Replies: 5
Views: 711

Re: Restored rear clusters!!

Hi Rachel,

If your deal with stu6465 doesn't work out, I'd gladly be second in line :D

Cheers
by pgmm
Sun Feb 12, 2012 10:49 am
Forum: Electrical system (30)
Topic: Headlights problem
Replies: 9
Views: 2181

Re: Headlights problem

I also have a problem with my blue 480: both headlights pop up as expected but the left headlight never goes down again. I had to understand the workings to solve the problem. In my car it turned out the "go down"-signal is only connected to the right hand motor and not to the left hand motor. As th...
by pgmm
Fri Feb 10, 2012 11:03 pm
Forum: Electrical system (30)
Topic: Infocenter/speedometer/tachometer all is black
Replies: 17
Views: 4076

Re: Infocenter/speedometer/tachometer all is black

The May 1991 wiring diagrams (Section 3 (39) of the Workshop Manual) suggests there is NO relay 4.35 anymore. All dashboard lights are always on via the rheostat, whenever ignition is switched on (via the light switch and fuse 10). Given your observation that the instrument lighting works shortly be...