lost all spark on my 1994 ram b250
#1
07-11-2010, 05:27 PM
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lost all spark on my 1994 ram b250
I was driving home from work yesterday and it just died while driving.......it seems to have lost all spark................I hac=ve tested for spark and guess what i have none......but I have no spark from the coil to the dist............and the wires that power the coil....i cant get a reading of power from them to the coil...with the key on
HELP ME PLEASE
HELP ME PLEASE
#3
07-11-2010, 07:54 PM
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hey alloro
You have helped me before with this thing.........all links look good and have no idea where the ASD relay is.......i will tell you I have ...in the very near past repalced the a/c clutch relay..(didnt fix the problem).......and the trans relay.......I can only locate 2 relays on the fire wall the 2 i have replaced
..........this is my van........
..........this is my van........
#4
07-11-2010, 09:24 PM
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#5
07-12-2010, 02:18 AM
You're correct, those are the ASD and FP relays. To test them check for power on the red wires. The red wires should have power whether the key is on or off. Now with the key on, the two Dark Green wires should have power, but with the key off they should be dead.
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07-12-2010, 12:20 PM
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#7
07-12-2010, 12:59 PM
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#8
07-12-2010, 03:58 PM
The relays need to be plugged in.
Okay, so it does sound like all of power is getting to the relays but the relays are not turning on. I also assume that if you hold your finger on the relays you aren't feeling a click when someone turns the key on and off? If that's the case then, 9 out of 10 times this means either a fuse feeding the PCM is blown or the PCM is no good. There's also a small chance your ignition switch died, but that is rare.
Okay, so it does sound like all of power is getting to the relays but the relays are not turning on. I also assume that if you hold your finger on the relays you aren't feeling a click when someone turns the key on and off? If that's the case then, 9 out of 10 times this means either a fuse feeding the PCM is blown or the PCM is no good. There's also a small chance your ignition switch died, but that is rare.
#9
07-12-2010, 05:19 PM
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The relays need to be plugged in.
Okay, so it does sound like all of power is getting to the relays but the relays are not turning on. I also assume that if you hold your finger on the relays you aren't feeling a click when someone turns the key on and off? If that's the case then, 9 out of 10 times this means either a fuse feeding the PCM is blown or the PCM is no good. There's also a small chance your ignition switch died, but that is rare.
Okay, so it does sound like all of power is getting to the relays but the relays are not turning on. I also assume that if you hold your finger on the relays you aren't feeling a click when someone turns the key on and off? If that's the case then, 9 out of 10 times this means either a fuse feeding the PCM is blown or the PCM is no good. There's also a small chance your ignition switch died, but that is rare.
PCM?
Sorry not a mechanic
#10
07-12-2010, 06:32 PM
