5.0 died?

[WANIAC]

I have a 1995 5.0 that just died at W.O.T. Got pulled back in . The problem is I have 12volts at coil and fire from coil but none to plugs . Replaced dist. cap and rotor ,sensor wheel. Any suggestions ? Leanining to sensor in dist. But I have the thunderbolt IV ign . Should start up right? I always assumed the sensor was for timming advance? Thanks to all In advance.

 

[Bondo]

Re: 5.0 died?

The problem is I have 12volts at coil and fire from coil but none to plugs .

The Only things between the secondary terminal of the Coil,+ the Sparkplug electrodes,..........

Is the Wires, Dist. Cap, Rotor,+ the Sparkplugs themselves...........

You Changed the Dist. Cap,+ Rotor..........
That leaves the Wires,+ the Sparkplugs..............

If the Coil is Firing,....... Why change that Expensive Sensor,..??..??.....It's Working.......

 

[wire2]

Re: 5.0 died?

If you remove the HV center wire from distributor and hold it ?" from ground, you get a good blue spark while cranking?
If not, test the HV wires. Radio suppression wire is typically ~1000 ohms per inch. If yours are a lot higher, replace them.

 

[Redneck Yacht Club]

Re: 5.0 died?

Those sensors fail all the time. If its the original one, it lasted a long time.
They have an coating on the bottom them, basicaly an heat sink. When they get hot, they stop working or starting cutting out. They do very strange things, I had one that ran for exallactly 20mins and lost spark, wait 2mins and spark.
The new ones have an extar ground wire and a colored heat sink. When it changes color, its gotten to hot and will fail. FFYI+ Good luck getting the screws out of the sensor, if ya break one, use machine screws and nuts.

 

[WANIAC]

Re: 5.0 died?

Thanks to all the replys. I found my problem to be the coil. Had 12 volt from + to a ground . Go figure a brand new coil and it just failed . Took back out and ran for 2 hours . Like a new boat again. Thanks again This fourm has helped me out alot. By the way it was an high out put accel coil.

 

[xltier]

Re: 5.0 died?

but didnt you say that you had fire from the coil??

 

[WANIAC]

Re: 5.0 died?

yes I did . But I guess it wasn't enough. That is where it threw me for A loop. I originaly replaced the coil due to it being A 1996 model. And thought 11 years of service was long enough. So I had the old coil still in the boat so I just wanted to see if it would fire up and low and behold it fired right up.

 

[MikDee]

Re: 5.0 died?

I have not been impressed with Accel products over the years, but do like Borg Warner, Mallory, MSP, and Hi-Standard Blue streak.

 

[Don S]

Re: 5.0 died?

Why don't you just troubleshoot the ignition system instead of throwing parts at it.
Here is something I found in an OEM service manual, bet it will help you too.

 

[WANIAC]

Re: 5.0 died?

Thanks don I sure could of used that diagram about 8 hours ago. But I will print it out and keep it . Thanks again.