Question about Cars & Trucks
Posted by Anonymous on
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Posted on Jan 02, 2017
the best way i have found to test glow plugs is to disconnect the wire to the plug and get you 12volt test light and put your negitive lead of the test light on the positive battery cable so when you touch the test light to any ground the light will light. so now go check your glow plugs and if you have one that doesnt light the light its burned out.
Posted on Oct 27, 2008
I would check that you are getting a live feed to your glow plugs terminals first, on cold starting, with a 12v test light.
Expensive to renew them, and then find it was the fuse or relay !
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Posted on Jan 20, 2009
SOURCE: 2005 Ford F-250 6.0 PSD No Start
Seems like a low injector control pressure situation. You may see plenty of oil pressure on the gauge but the high pressure oil that opens the injectors is probably passing through a blown STC fitting at the back of the high pressure pump or something of that nature. Check for smoke out the tail pipe, if there's smoke, I could be wrong. If you checked the glow plugs (make sure you have 12 comming and going through the relay, just because it clicks does not mean it's working) than you more than likely have compression, the last thing you need is fuel. To get fuel you need high pressure oil. Your truck should have an ICP sensor on the right valve cover toward the front. You can back probe or make a breakout harness to pins... ok I don't know what two pins but there is only three. Anyway backprobe the sensor and see if you have more than .82V while cranking. If you do not, go to the IPR (injection pressure regulator) which is behind and below the turbo. It is a round solenoid valve sticking out of the high pressure oil pump. This valve will have the connector pointing down and toward the back of the motor in it's "weather protecting" position. You can rotate this valve by hand so the connector is easier to get to but don't force it and break it. You will then need to apply 12V and a ground to this valve. Do not supply the voltage for more than 120 seconds though or you could burn the valve up. with 12V to the valve see if it will start. If it will you may have a power supply problem to the valve. If none of this helps let me know, the rest of the troubleshooting is pretty involved.
Posted on Apr 16, 2009
SOURCE: Jaguar glow plug problem
The Glow plug coming on, and the car going into limp home mode, is a default safety feature that occurs when the engine management system picks up any kind error message from the many sensors now used on the car.
I've found the glow plug light problem with my Jag, it was the air filter. Apparently Jaguar servicing change it every 3rd service (not a good idea). I changed mine, it is a new car. I had the EPR valve cleaned and a major diagnostic carried out by a local garage (who had the Jag diagnostic software). It turns out I also need a new Turbo; the actuator is sticking (£759.00 plus 3 hours labour). But hey, the main limp home mode problem is fixed and I can drive my Jag confident it will accelerate when press the gas.
Posted on Jul 01, 2009
Hi, glow plugs does not need changing unless the vehicle struggles to start in the morning or when cold. When testing the glow plugs, they should not take longer then about 5 seconds to become red hot.
Posted on Nov 24, 2009
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