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1997 Dodge Ram 1500
Question: problem with my truck
i have a 1997 dodge ram 1500 hundred its always been a great truck but every once in a while it would just go dead and i would have to restart it the other day i drove it home and was gonna drive it to work the next morning and it wouldnt start i took the gas take off and checked fuel pump its working i replaced the coil i ts still not firing i even held the coil with my hand while trying to crank it didnt even shock me and info would be helpful....thanks Bobby
Answer #1mastertech6371 May 29, 2011, 18:28Master
you need 3 things to run. fuel pressure, spark and compression. you need to check the fuel pressure. it has to be around 40 lbs. holding the coil for a shock is not a smart way of checking for spark. if you remove the spark plug wire from the distributor, that is the coil wire, crank the motor and see if there is spark to something metal, not your body, it hurts.
check these and get back to me for more info.
Replybobbyjordan, May 29, 2011, 19:02Rookie
there is no spark to anything metal nothings firing as far as i can see....thanks oh yeah thats what i got mad and held the stud on top of the new coil nothings firing
Replymastertech6371, May 29, 2011, 19:17Master
ok. you may have a bad crank sensor but you need something to read rpm readings while cranking. that will turn the coil on and off.
if you have a test light, turn on the key and there should be a light on the positive side of the coil. at this point, the negative will light the light as well as it has no ground yet. have someone crank the motor and keep the light on the negative side of the coil. it should pulsate or flicker which means the module is turning the coil on and off. if that is the case, you have a bad coil. if the light does not flicker, the first thing i would look at is the crank sensor. get back to me.