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Diesel Bob is right. Heat it up first.

Eric, I apologize for not being clear. I was referring to the afterglow in my answer, not relay chatter or fast cycles. I should have specified this. It all depends on the voltage that the GP card monitor is seeing to determine afterglow cycle rate if its needed. Some vehicles may indeed have...

You have a good question. I have noticed the same situation with my three CUCV vehicles as well. Two have the resistor bypass and one was converted to 12 volts by the previous owner. When you modify the voltage source to the glow plugs (resistor bypass procedure) from the factory 24 volt...

Just a couple of friendly hints when servicing the GP module (card). When removing the card from the plastic housing/connector: 1. Do not use metal needle nose pliers or other metal tools to remove or insert the card. This can possibly damage components on the card. 2. Ensure that the card is...

I had the same issue that you are describing but on the passenger side. I finally discovered that the top bolt of the left front shock absorber was missing the metal spacer that the bolt goes thru. Installed a new spacer and the problem was solved. Karl

Welcome from Centre County. Karl

GP Sensor Attached is a graph of the WT3000 sensor resistance vs temperature. As you can see, if the temperature increases, the resistance decreases. So if you disconnect the temp sensor, the resistance is high to the glow plug card. This will cause the GP card to "think" that it's cold...

Leonards Fresh Paint Leonard received a fresh coat of CARC last weekend. Karl

Exactly why I have a fuse right next to the front battery to feed the rear bus bar. Karl

I use it to provide power to radio equipment, wiring the radio equipment directly to the rear bus bar. Each piece of equipment is individually fused for protection at the bus bar. Eventually I plan to install a 12VDC to 120VAC inverter. Once you have a good source of power to the rear, you...

http://www.steelsoldiers.com/showthread.php?95803-M1009-Rear-power-24v-to-12v-modification&highlight=bus

Best bet is a Motorola 2135 key. Almost all of the Motorola mobiles used this key. If it's an older radio, it might be a CH751. Maybe a 2553, but they were usually used on the base station cabinets. Your local Motorola shop should have them. Karl

Bill indeed touched the lives of many in a very positive way. His smile and kindness will always be remembered. He worked for a small company making antennas, I still have one of them in a box. When the day comes to install it, I will remember the great man that made it. Thanks Bill, Rest In...

I'm planning on coming down. Might be two of us. Karl

http://www.murcal.com/Catalog/Metal-DC-Contactor-Family/974-1215-011-09 These appear to be a good relay. Karl

Do you have a test light? Turn the key to the run position and see if you have voltage at the bottom side of the relay that connects to the glow plugs. Karl

Sounds like the front battery went or you lost a cable/connection between batteries. A total failure is usually easier to find the problem than an intermittent one. Your portable volt meter will be your best weapon to find the point of failure. Karl

Start by checking the battery voltage on the front and rear batteries. Load test each battery. Check and clean all battery connections as well. Between the batteries, the positive and negative bus bars on the fire wall and all ground connections to the vehicle. Report back with your results. Karl

I went through the same issues that you are experiencing. Long story short, the new fuel pump (from NAPA) was defective out of the box. Installed a different pump and it started right up. Karl

Good advice.