Why are the glow plugs on my BT50 not working?
Measure the voltage being applied to the glow plugs. It should be around 10 volts or so. If the voltage doesn’t drop when the glow plugs are on, the relay is probably the culprit. If it does drop, then something else is causing the problem, but you can probably stop looking at the glow plugs.
Why does the glow plug light on my Ford Ranger not work?
1 more thing, the glow plug circuit gets no power until the glow plug light comes on. The same model Ford Ranger has problems with the Ign switch, especialy if you have several keys on the same key ring. Result non functioning Ign switch, Fords answer too mutch weight on key barrel.
Why does my VW go into limp mode?
You may be in limp mode for some reason. If you turn off the engine for 10-20 seconds, limp mode goes away, but as you drive again, it happens again. There must be a code about why limp mode is being triggered. The VW dealers have a much more thorough computer to obtain the codes. I have had 3-4 times this odd sensation of loosing boost power.
What should I do if my glow plug is bad?
If no voltage the relay is bad, Pin A battery voltage, key in run position, all the time ( this is feed by the 20 amp fuse ). Pin B 12 volts from the ECM when glow heat is called for. Pin C direct continutiy to engine ground. pinsD&E are not used. IF there is no voltage at pin B check the ECM fuses or the ECM could be bad.
What should the voltage of the glow plug be?
The single heavy red wire term should be 12v all the time. The double heavy red wire term is to the glow plugs should be hot 12v when you hear the relay click on. If no voltage the relay is bad, Pin A battery voltage, key in run position, all the time ( this is feed by the 20 amp fuse ).
Why does the glow plug light on the dash quit lighting?
On the water manifold/ t/stat housing is a temp sender this is for the ECM it could be bad and it is telling the ECM the engine is hot and does not need the glow heat. Easy test unplug it and try starting it, unpluged the ECM thinks it is stone cold and it will glow for a long time.