Hey everyone, I've been checking out this great forum for information since I have had my truck, and it has been a great resource.
A few weeks ago I noticed the problem whenever it had rained, no spark and no fuel pump. I got on here and found the issue of the notorious under fuse box splice corroding. I found the very red wire that goes from a 3:1 and corrodes. Mine was green with a single thread of wire connected. A bit of solder, heat shrink tubing, and some electrical tape and everything was great. Started her up and drove like a champ.
So, here I am about a week later and no spark. This time the fuel pump is kicking on and priming, so I am suspecting another problem. If you would recommend I check fuel pressure, I have a gauge but have never used it yet. I guess this could be a good first use for it.
1. I want to check my Crank sensor, so far I have only read to check resistance. It is a 3 wire plug as I understand it, so what pins do I test resistance through? Can someone give me a more detailed test pattern?
2. The other thing I would like to test is the Coil, I have only ever tested one other coil and it was a pack style that I could just test resistance between the different plugs. (Much like the 4cyl neons I believe) Is there some similar test for our Dakota coil?
Thanks in advance for your help, and please let me know if there are any other things you would recommend checking out. I will post a follow up as I make progress.
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Thanks for the fast response, I got a copy of the Service manual and see how to test these. I'll give that a go this evening and see what I discover. I do not have a CEL, I have an OBD-II reader, but I think on these 95's its OBD-I, I don't know anything about the scanners for OBD-I.
Will post results tonight, any other input is still greatly appreciated.
Thanks for the Info about OBDI, I will try the key sequence and let you know what I get.
As for the no spark, I tested coil, secondary resistance was a little bit high, like 14Kohms, so IDK. Primary resistance was fine around 1ohm
Cam Pos Sensor and Crank pos sensors were fine. I plug everything back in and it starts up. I'm glad it started on up, but feel like I didn't really accomplish anything either.
Irony. I am a little bit suspect to there having been some corrosion in the wires. While it was started up I went around under the hood and used the back of a screwdriver to kind of 'tap' on the connectors. I was not able to get it to stall or give any signs of a problem though. I'll see how it is after next rain.
Let me know what you guys think of the coil secondary resistance, it was a little higher then the service manual said it should have been, but I don't get the impression its bad if its running.