5.0 Help in a truck - Page 4

militarymustang88gt · 12-29-2008, 02:58 PM

i thought you were talking about the connector on the dis. that is your whole prob. if you look at the stock conector on the coil it has a whole bunch of plastic so it wont collapse the field. if it is just in the open it will colapse the magnetic field early and you may get 10,000 volts to the spark plug and look like you have spark but in reality you need 30,000 at least to run on these motors.

ps i suck on paint

StangChik · 12-29-2008, 03:01 PM

good deal....I'll try that, because this is the first thing we noticed when it quit, but didn't think it was serious. Pull a part, here i come.

waypastcrazy · 12-29-2008, 03:02 PM

pull number one plug bring #1 piston to top dead center of compression stroke pull dizzy cap and see where rotor button is sitting if its jump time it will be off from #1 terminal make sure 0 is lined with timing pointer on harmonic balancer if all is well check your vaccum line running to your map sensor. shot in the dark but had that happen on a friends bronco but it would crank just wouldnt stay running they worked on it for over a year.changed everything even the map.they finally gave up and came and got me and i lucked up and spotted the vac line had melted to back side of exhaust manifold. i am not familiar with your year model just figured i would throw something out there. good luck.

EHardy1971 · 12-29-2008, 03:20 PM

Quote:

Originally Posted by StangChik

its the connector on the coil not the dist. We have had 2 wires running to it, and they are brown and yellow i think.

What what worries me is the manual i have shows 3 wires.

Ok,on the coil,you should have 2 wires on the positive side,one is black that is supposed to go to the radio noise filter,the other is red/light green from the ignition switch. On the negative side it shows a dark green/yellow that goes to the ignition box. That brings up another possibility,being an '86,it has the duraspark ignition,and those things are notorious for going bad with no warning. If it has'nt jumped time,I'd take the duraspark box to the parts store to get it tested.

EHardy1971 · 01-07-2009, 01:09 PM

Well,any luck?

StangChik · 01-07-2009, 01:10 PM

haven't got back to it yet....haven't house trouble now

12-29-2008, 02:58 PM	#31
militarymustang88gt Senior Member Join Date: Jun 2007 Location: bham and auburn Posts: 337	i thought you were talking about the connector on the dis. that is your whole prob. if you look at the stock conector on the coil it has a whole bunch of plastic so it wont collapse the field. if it is just in the open it will colapse the magnetic field early and you may get 10,000 volts to the spark plug and look like you have spark but in reality you need 30,000 at least to run on these motors. ps i suck on paint __________________ finally got my avatar. it is the white one.

12-29-2008, 03:02 PM	#33
waypastcrazy ADDICTED TO SMALL BLOCKS Join Date: Jan 2007 Location: lookout mt Posts: 1,757	pull number one plug bring #1 piston to top dead center of compression stroke pull dizzy cap and see where rotor button is sitting if its jump time it will be off from #1 terminal make sure 0 is lined with timing pointer on harmonic balancer if all is well check your vaccum line running to your map sensor. shot in the dark but had that happen on a friends bronco but it would crank just wouldnt stay running they worked on it for over a year.changed everything even the map.they finally gave up and came and got me and i lucked up and spotted the vac line had melted to back side of exhaust manifold. i am not familiar with your year model just figured i would throw something out there. good luck. __________________ http://alabamaopencarry.com/forum/index.php One of StreetStangs class clowns! Status:slow as hell! NORTH EAST ALABAMA STANGS

01-07-2009, 01:09 PM	#35
EHardy1971 Trunk Monkey Join Date: Jun 2007 Location: Home Posts: 5,708	Well,any luck? __________________ Eric 89 LX Coupe-Juiced 01 Lightning-Boost 06 TBSS

12-29-2008, 03:01 PM	#32
StangChik Senior Member Join Date: Sep 2006 Posts: 194	good deal....I'll try that, because this is the first thing we noticed when it quit, but didn't think it was serious. Pull a part, here i come.

01-07-2009, 01:10 PM	#36
StangChik Senior Member Join Date: Sep 2006 Posts: 194	haven't got back to it yet....haven't house trouble now