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The Mitsubishi Pajero Owners ClubŪ The Mitsubishi Pajero, Shogun, Montero, Challenger, Raider and EVO 4x4 Owner's Club
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ptsg *
Age: 30 Zodiac: Joined: 31 Jan 2018 Posts: 35 Location: Portugal
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Posted: Sat Dec 29, 2018 20:19 Post subject: Glow plug control unit odd issues |
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Hey there.
I have a 94 Pajero 2.8 that have been running with just one glow plug (NGK) since I bought it in January.
I decided to buy a set of those cheap glow plugs for the time being to see how long it will last. It started perfectly the first 2/3 times (I just let the engine run a minute or so), then I took it for a spin and the next day I found the glow plugs were already burned out.
I though the problem was the glow plugs, so I contacted the seller which shipped another new set and the same happen. At this point, I went further on my investigation and found that the glow plug relay stays on with the engine running causing the glow plugs to burn. (Fun fact: The NGK plug have been constantly on for at least one year.)
Anyway, the glow plug relay is working just fine. What I found, and this is the odd part of this issue, is that if I just turn the ignition on, the glow plugs will cycle exactly as it should. They stay on for a couple seconds, then the relay turns off. However, if I cycle the glow plugs and actually start the engine, the glow plugs will stay on and won't turn off. The relay coil wire will stay energized until I pull the wire of the relay.
So I'm thinking I have some sort of issue with the glow plug control unit. Has anyone ever had this happening? I don't really want to bypass the control unit with a manual push button.
I opened the control unit but it seems all good, at least visually. |
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Posted: Sat Dec 29, 2018 20:19 Post subject: Google Ads keep the POCUK free to join! |
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kenthepipe LifeTime Member
Joined: 11 Mar 2005 Posts: 4366 Location: North-East
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Luke2000 *
Age: 61 Zodiac: Joined: 14 Aug 2021 Posts: 26 Location: Leitrim
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Posted: Sun Jan 23, 2022 20:15 Post subject: |
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[quote="kenthepipe"]Here's a good how-to regarding the ECU, hope it helps somewhat ?
Old I know but does anybody know which diodes they are? Mine burned so can't read them.
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