Question about 1995 Toyota Previa

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No power to glow plugs or plug relay

Hi i have no power to glow plugs or relay if i power relay i get power to the plugs and works fine can any one help to the have a fuse or timer relay ? please help

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

wesleygolden
  • 59 Answers

SOURCE: glow plug timer

check the temp sensor or low resistance in the glow plugs first

Posted on Jul 11, 2008

  • 1 Answer

SOURCE: No glow plug light, car turns over but won't start, no CEL or codes

Very common problem in our shop.  I bet you it is the main power relay located under the dash on the driver's side.  That relay failure is consistent with your symptoms.

Posted on Aug 17, 2008

  • 1 Answer

SOURCE: my 1997 F-350 powerstroke keeps blowing a 30 amp maxi fuse

I changed the glow plug controller selinoid haven't any problems since Thank You!

Posted on Mar 26, 2009

  • 43 Answers

SOURCE: where is glow plug relay on a 2007 f350 6.0

I can solve this problem for you but I need the right information. They have your truck listed as a 2003 F-350. Then it is also listed as a 2007 and want to know where the glow plug relay is. I need the correct year and model with the proper engine displacement.

Posted on Apr 14, 2009

steve_e_uk
  • 1675 Answers

SOURCE: How do i replace my VW SHARAN 02 glow plug relay.

the glow plug relay is a little black box normally located in the fues box, the relay regulates power to the glow plugs, if the relay is not functioning correctly the plugs will not heat enough or, you will have to allow a longer time to let them heat up, it acts like a switch as such, when you turn on your ignition it switches over to make a contact inside, which inturn starts the heating prosess of the glow plugs when they are at the correct tempreture or the onbored computer detects they are it then switches back , without it , say just using a fuse instead, your glowplugs will just get hotter and hotter till they melted, and no you dont have to change the glow plugs hope this helps, ime not good at explaining stuff in writing lol

Posted on Jan 30, 2010

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2 Answers

Glow plugs does not work.


check that the relay is working as the plug indicator gets the power after the relay . It may be a fuse . If the relay is ok then pull the Glo-plugs and have them check

Nov 21, 2013 | 2006 Tata Indica LXi

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Getting a P1391 error code on my 01 Caravan, Changed PCM Sensors, wires, plugs, EGR, Whats Next? Please


P1391 Glow Plug Circuit Low Input (Bank #1)
  • DTC P1391 or P1393 will set when the monitor indicates that all four glow plugs are not being powered on that bank. An open in the glow plug circuits, glow plug relay, glow plugs or monitoring circuit could be the possible causes.

    Both DTCs P1391 and P1393 together will set when the monitor indicates that all eight glow plugs are not being powered. An open in all glow plug circuits, the glow plug relay, glow plugs, fusible links or all three monitoring circuits could be the possible causes.
  • Possible causes:
    • glow plug relay
    • glow plug shunt
    • open in glow plug circuit(s) or monitoring circuit(s)
    • glow plugs
    • PCM
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May 19, 2011 | Dodge Grand Caravan Cars & Trucks

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Toyota hilux 3ltr diesel,i put new glow plugs in about 3 weeks ago & it fixed the starting problem going fine.now it just started not starting when it is cold checked wiring has power to glow plugs...


Double check your fuel filter and replace as necessary. Also replace your coolant temp sensor. I would also pull out each glow plug and bench test with heavy cables and make sure they do glow red. It very well could be a couple of the glow plugs have failed due to quality. Let me know what you find.

Apr 19, 2010 | 1999 Toyota 4Runner

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1992 F250 7.3 idi diesel glow plug relay has power to two large posts and one small post and the second small post pulses when activated. I checked ground to engine and seems to be gounded fine. Any ideas...


Have you checked the glow-plugs? On that system if one glow-plug is burnt up than it will not let the main relay in the controller to kick in.
Check all the glow-plugs make sure they are working.
The easiest way to check them is with a regular 12v test light.
Hook up the negitive end (aligator clip end ) to the battery + terminal and than with the other end of the test light ( pointed end ) touch each glow- plug connector tip ( with the glow-plugs harness connector removed ) and see if the test light lights up.
If the test light up--- glow-plug is good. If not than the glow-plug is bad--burnt out .

Feb 13, 2010 | 1992 Ford F250

1 Answer

Glow plugs flashing when engine is running


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)

Jan 06, 2010 | Ford Focus Cars & Trucks

1 Answer

1997 f250 powerstroke has power but wont start. has power from batteries all connections are fine but when turning the key over i got nothin.


Items to check are

alarm/starter disable relay

neutral safety switch (automatic trans)
try to start on N.

clutch on safety switch (stick)

main fuse
glow plug fuse
glow plug relay
glow plugs

Nov 05, 2009 | 1985 Ford F 250

1 Answer

My ECM is not comunicating with my glow plug relay. I replaced ecm and still get no power to my glow plugs. I tried an ecm from another 02 F-350 PS and it works fine but the programs in the two ecm's are...


As I understand these systems the ECM is not what powers the glow plug relay. Any kind of engine controls happen after the engine starts.

There should be a power relay which feeds the juice to the glow plug relay. When you turn the keyswitch to start and the light for the glow plugs goes out you should hear a clicking as the glow plug timer cycles juice to the glow plugs.

The glow plug side is a separate system from the fuel management side. Someone should check the glow plugs to see if each is good. The diesel system used to be simple and it sounds like you are complicating what should be a simple repair. I could be wrong, but it does not sound like the Dealer is selling you the parts you need.

A diesel needs a heated combustion chamber to initially fire and then it runs by compression. Perhaps if you change the power relay from the vehicle you removed the ECM from and tried it in your truck it would work with your old ECM.

Jul 10, 2017 | 2002 Ford F350 Super Duty DRW Reg. Cab

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Glow plug system does not seem to work


Likely, I would check the glow plug relay.

Mar 24, 2009 | 1996 Ford F350 Crew Cab

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