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Old 09-16-2020, 08:05 PM   #1
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Default 1989 V6 Died and Won't Start

I was driving down the road yesterday, and my hardbody suddenly lost power and shut down. As it was failing, I was holding the gas pedal, and I noticed that I would get power intermittently. I would have power for 1 second and then none at all, then power for 1 more second, and none again. This happened in a matter of ~5 seconds before the truck finally shut off completely. I rolled it safely into a nearby parking lot. When I attempted to start it back up, it cranked continuously but never caught. Since then, I have checked some basic functions of the fuel and spark systems.

A healthy amount of fuel is coming out of the fuel filter when unplugged.
The coil is delivering spark to the distributor.
The distributor rotor is spinning as the engine cranks.

That is as much as I could diagnose with the tools I had on me.

I will be checking for spark from the plugs when I return with a plug socket. I also want to see if the injectors are spraying fuel, but I am having trouble locating them (I made another thread about this issue).

Does anyone have any insight before I continue? I figured someone must have experienced something like this.
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Old 09-16-2020, 09:02 PM   #2
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You're on the right track. If you're getting fuel, air, and spark, you may want to check compression.


If it's the injectors they are pretty difficult to find unfortunately.
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Old 09-16-2020, 10:20 PM   #3
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Sounds like it has jumped time. Time to verify the cam timing marks versus the rotor position. The top timing belt cover can be removed. Take the AC belt tensioner bracket off and you can get the top cover unbolted.
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Old 09-16-2020, 10:44 PM   #4
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Okay, i was afraid of that but I will check the timing. When you say compare the cams to the rotor what do you mean? Is there some sort of mark on the rotor? Or should it be facing the #1 wire when the cams are lined up?
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Old 09-17-2020, 12:08 AM   #5
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Line up the cams.and.make.sure the rotor points to the right spot. I believe at #1 TDC it should point to #1.
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Old 09-17-2020, 12:46 AM   #6
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You might also want to check for codes, again a link to that is in my signature below. It could be a bad distributor.
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Old 09-17-2020, 01:37 AM   #7
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I have had a code 13 (coolant temperature sensor) for a while now. That wouldn't suddenly cause this issue would it?
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Old 09-17-2020, 01:45 AM   #8
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Quote:
Originally Posted by alpacaox View Post
I have had a code 13 (coolant temperature sensor) for a while now. That wouldn't suddenly cause this issue would it?
Coolant temperature sensor would make the engine run rough because the ECU is trying to set the Air/Fuel Ratio based on the coolant temperature.
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Old 09-17-2020, 02:47 AM   #9
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Id be more inclined that the coolant sensor would actually be the cylinder head temp sensor and make the engine run rich causing poor fuel mileage.
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Old 09-17-2020, 10:50 AM   #10
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Quote:
Originally Posted by alpacaox View Post
I was driving down the road yesterday, and my hardbody suddenly lost power and shut down. As it was failing, I was holding the gas pedal, and I noticed that I would get power intermittently. I would have power for 1 second and then none at all, then power for 1 more second, and none again. This happened in a matter of ~5 seconds before the truck finally shut off completely. I rolled it safely into a nearby parking lot. When I attempted to start it back up, it cranked continuously but never caught. Since then, I have checked some basic functions of the fuel and spark systems.
That description really sounds like you ran out of gas.

Is the fuel tank low? You might have water in the gas tank. That would make it look like the injectors were still squirting fuel, but instead, they would be squirting water.
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