My 96 Ram 1500 318 4wd auto wont fire. It cranks and does one fire, then just cranks. I hear the fuel pump coming on and smell gas when it tries to fire. I'll check for spark next, but I want to eliminate the crank position sensor if I do have spark.
So my question is, On a 96, does the tach show something when you are cranking the engine over, I know the later models do. My is showing nothing on the tach.
Does this mean it will fire up and stall? Did you try keeping your foot on the gas?
Quote
So my question is, On a 96, does the tach show something when you are cranking the engine over,
No, Tach moved when starting was with the can buss dash which was in 97 or 98.
Quote
The key on, off, on thing doesn't work well after about the 92- 93 model year.
Actually the "key dance" started back in the 80's and continued till past 2000. There are different procedures but this will work on a 96. Even if you don't have any codes you will see a 55 code.
At this point I would start with checking if there is voltage coming into the throttle position switch, and power to the cam sensor on the back of the head on the right side. The power source for both is supplied by the key on power, and if the wiring fails, it doesn't usually set off a code.
I have not heard of issues with the wiring on the full sized trucks, but there sure was an issue with that era Dakota with a factory wire splice near the battery that supplies the power for both sensors, and there have been other issues with factory wiring connections on a lot of this era Mopars. I might be such a thing as the wiring issues have caught up with the full sized trucks as time passes.
Does this mean it will fire up and stall? Did you try keeping your foot on the gas?
It doesn't fire but sounds like it wants to. I never put my foot on the gas with any injection vehicles. I heard it was a big nono. I can try it though.
Quote
So my question is, On a 96, does the tach show something when you are cranking the engine over,
No, Tach moved when starting was with the can buss dash which was in 97 or 98.
Ok, that eliminates that "problem" good info to know in the future. Thank you.
Quote
The key on, off, on thing doesn't work well after about the 92- 93 model year.
Actually the "key dance" started back in the 80's and continued till past 2000. There are different procedures but this will work on a 96. Even if you don't have any codes you will see a 55 code.
I saw 12, then 55. I believe 12 is battery disconnected, or low battery voltage in my case since the battery was low from sitting for a month.
At this point I would start with checking if there is voltage coming into the throttle position switch, and power to the cam sensor on the back of the head on the right side. The power source for both is supplied by the key on power, and if the wiring fails, it doesn't usually set off a code.
I have not heard of issues with the wiring on the full sized trucks, but there sure was an issue with that era Dakota with a factory wire splice near the battery that supplies the power for both sensors, and there have been other issues with factory wiring connections on a lot of this era Mopars. I might be such a thing as the wiring issues have caught up with the full sized trucks as time passes.
I see the TPS on my scanner, and it detects the pedal when I press it.
