D, you are loosing it!!!! The 4.0L came out in the Ranger in 1990, and HAS NEVER had a distributor, it had DIS when it came out!! The 2.8L, 2.9L, and 3.0L had distributors in 1990!!

Besides that, if it did have a distributor (which it doesn't) it wouldn't be in the front of the block, it would be in the back, where the camshaft position sensor is!!

How about you take a picture of it with your Canon!!!!!!

Check out this URL, showing coils for a 1990 Ranger with a 4.0L, they are ALL for a DIS!!!

http://www.rockauto.com/catalog/rafr...?a=G-autoparts



And for your information the "X" VIN code is for the OHV 4.0L from 1990-2000!! The "E" code came out with the SOHC 4.0L

 

what are you talking about the ohc motors came in those years wth

 

Typo, sorry OHC should have been OHV

 

Problem found. Green wire in the harness had pulled loose from it's connector under an electrical tape wrap. I found it by being touchy feely through the tape.... I may get to 2nd base with it nex time... or is that 3rd base...

Thanks for reading all.

 

hey glad you could figure it out.

 

Well, went for a drive in it this evening and smelling cooking Tach Adapter in a matter of minutes. Something has went wrong with this outfit. I bought the truck to drive and enjoy but not sure I'm going to keep it. At the present I don't have the resources or knowledge to replace the ignition system considering it's seems to be needing a slave cylinder and possibly a steering box. I have a Borgeson shaft that came with the truck but not sure that's the whole story....

oh well... depressing rant over with for now..hehe

 

Now I am really split over buying a sceamin demon coil pack.

 

Sorry you are still having trouble......as previously posted, throw the MSD stuff in the trash and go back to the OEM ignition, and you won't have any more trouble.

 

Send me the money you would spend on it, you will get the same performance increase, and your truck will be more reliable!

 

If you read Bob, he stated it was with the tach, not the ignition.


Since you have NO experience with the Screamin Demon Bob, please don't post comments like that.

 

Here we go again......he is having trouble with the MSD-8912.........


Again, Performance Distributors DOES NO RELIABILITY TESTING, as I have previously posted!!!

If you aren't getting misfires, explain how the screamin demon will give you any more power???? ANY coil will produce the same voltage for a given spark plug gap, period! The voltage will be clamped at the point the spark is produced!!!


What happened with the 4.0L with the distributor you and D claimed?

 

Again unless you have experience with the Screamin' Demon, which you obviously don't, please don't mislead people. You have no way to back up what you are claiming.

A hotter coil pack with a larger gapped spark plug will increase the efficiecy of the fuel burn during the combustion stroke.

 

According to MSD the problem is a weak ground from the violet wire from the ECU. I've no idea if that is the problem until I try. Keep in mind that the truck set for awhile and was only driven occasionally and short trips. There is every possibility that something has been wired wrong for a long time since it took a 4 hour drive to melt the tach/fuel adapters. I would however, put a factory ignition back in place for simplicity and ease of troubleshooting. As I mentioned before I'm not a mechanic by any stretch and can't offer any opinion on aftermarket vs stock because this is the first aftermarket ignition I've ran. From what I have realized from reading the troubleshooting boards is many people tend to wire things wrong but not following the instructions and / or using/not using a extra part.

I discovered last night that all the Pro Comp gauges,dash lights, park lights and visor lights great if you don't pull the headlight switch out all the way. If you do then only the headlights come on. I'm guessing Chris had a set of driving lights on the front that came on with the other lights at one time. I'm thinkign the 2 Hella Rallye 1000's i was going to mound on the grill guard may be a little rough on other people's eyes.

 

Total BS!! When a plug fires, if combustion takes place (there is no misfire),
you won't get any more efficiency if you make the plug gap twice as wide!


You will either have combustion, or no combustion(misfire). Lets see if you can understand this analogy: Combustion / no combustion is the same as
pregnant / not pregnant .......there is no such thing as a little bit pregnant!!!!


I say Performance Distributors and MSD do NO RELIABILITY TESTING to SAE standards as I have previously posted! I'll leave it up to you to prove that
they do!!!!

You were wrong about the 4.0L with a distributor, and your wrong about after market ignitions!!!

 

Thanks for tuning into another exciting episode of "Sticks and Stoned Ranger"......

On a random crazy idea I went home on my lunch break and unplugged the tach/fuel adapters and the truck runs without them ? ................ so far there seems to be no reason to have them. I had thought beforehand that they were needed for the signal from the tach for proper injector timing...

I let it warm up and then drove it to work.

This thing isn't a truck... it's more like a roller coaster.

 

lol nice so it runs alot better sounds like my truck with the maf unplugged runs so much better lol

 

I am no ignition expert but from my logic I would think that a bigger spark would ignite the fuel faster closer to TDC. Taking pregnancy out of this picture, black powder rifles take a while to ignite, now wouldnt you think that a larger spark in the chamber would ignite all the powder faster resulting in greater velocities given a short barrel?

 

The octane of the gasoline will determine the flame front speed in the combustion chamber. The higher the octane, the slower the flame front will travel. The plug gap has nothing to do with it. However, the longer the spark, the higher probability of coming in contact with gasoline molecules.
But if misfire isn't happening with the recommended plug gap, there will
be no advantage to increasing the gap. The main disadvantage of the increased gap is the higher voltages will break the insulation down sooner on the plug wires.