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Glow plugs flashing when engine is running - Focus Ford Cars & Trucks

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HI. This is an indication of a failing glow plug. It will be necessary to test each plug to isolate the issue, or run a diagnostic scan on the CPU. During the scan, you should be issued a code that will isolate the actual glow plug that is malfunctioning. If you insist on testing each plug, use my procedure below to assist. You can find the resistance specs in your operators manual.


A test light can be used to determine if the glow plugs are working.


1. With the test-light grounded, insert the test light probe into a glow-plug wire to check for continuity.

2. If the light comes on, check the other cylinders in the same manner. If the test light failed to light, check for continuity at the glow-plug relay.

3. If no power is present, check the control circuit of the glow plug relay.

4. If the control circuit is working, the relay may be defective (FYI, manufacturers may have the system fused and fusible links may be located throughout the system).

5. If the glow-plug circuit is working, the glow plugs themselves may be defective.

Checking glow-plug resistance:(Remove the plug for this test)

1. With an ohmmeter, connect one lead to the terminal and the other lead to the body.

2. Read the resistance and compare to specifications.

3. A visual inspection may also be necessary to check for excessive carbon buildup and physical damage to the tip.

4. A glow plug that has excessive carbon deposits on its tip can give the correct ohmmeter reading but still not work. Clean the tip with carbon cleaner.(DO NOT USE A BRUSH TIP CLEANER)

Posted on Jan 06, 2010

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Posted on Jan 02, 2017

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Anonymous

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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

fusster

  • 65 Answers

SOURCE: I have a 2000 Golf

your car went in to limp mode...it sounds like you have got a intermitant fault with the throttle pedal.get the fault read to confirm.you can drive it but it may reoccur...you are doing no damage

Posted on Jan 22, 2009

emissionwiz

Marvin

  • 85219 Answers

SOURCE: The glow plug light flashes while the engine is

this means you most likely have a burnt out glow plug or glow plug timer control or both

Posted on Mar 18, 2009

ghost4548

Paul McGrath

  • 776 Answers

SOURCE: glow plug light flashes after can has been running

obviously there's a problem with the system... your best SOLUTION is take it in for proper DIAGNOSIS.. ya think?

Posted on May 26, 2009

bayyagg

Bayyagg

  • 1672 Answers

SOURCE: glow plug light keeps flashing

Hi,
That means ur glow plug timer relay need a check up and it might need to be replace! It is made of electronic and the inside are relays!
Check that first!

Posted on Jun 15, 2011

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