Replaced fuel pump and relay still doesn't start. checked power all good. power to relay and power. still doesn't start.
Dec 27, 2020 at 1:45 AM
Does not start
1995 DODGE DAKOTA
DAKOTA 1995
- MEMBER
- 1 POST
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Can you please be more specific as to where you have voltage or what other tests you performed? Can I assume you have a crank/no-start condition? If so, have you checked for spark? Only about three percent of crank/no-starts occur due to loss of fuel pressure. Perhaps two percent are due to loss of spark alone. Easily 95 percent are caused by a loss of both spark and fuel, but the loss of fuel is misleading because the fuel pump will still run for one second when the ignition switch is turned on. That is enough to keep fuel pressure up to near normal, but you also won't be getting any injector pulses to bleed any fuel pressure off.
It may be hard to hear, but can you hear the hum of the fuel pump for that first one second when you turn the ignition switch on? Have you checked the diagnostic fault codes? You can do that yourself without a scanner. Chrysler made doing that much easier than any other manufacturer. Cycle the ignition switch from "off" to "run" three times within five seconds without cranking the engine. Leave it in "run", then count the flashes of the Check Engine light. On most models, if you think you miscounted, turn the ignition switch off, then back to "run" one time and the code sequence will repeat. The first group of flashes is for the first digit, then there's a short pause, then the second digit flashes out the same way. Additional codes will flash in numerical order after a longer pause between them. The last code will be # 55. That just means it's done.
You can go here:
https://www.2carpros.com/articles/retrieve-trouble-codes-for-chrysler-dodge-plymouth-odb1-1995-and-earlier-car-mini-van-and-light-trucks
to see the definitions, or I can interpret them for you. Be aware the codes relevant to this problem often do not set just from cranking the engine. Those defects need more time to be detected, as in when a stalled engine is coasting to a stop. For that reason, it would be nice to know the history that led up to the current problem. Also, do not disconnect the battery as that will erase any fault codes, then that valuable information will be lost.
It may be hard to hear, but can you hear the hum of the fuel pump for that first one second when you turn the ignition switch on? Have you checked the diagnostic fault codes? You can do that yourself without a scanner. Chrysler made doing that much easier than any other manufacturer. Cycle the ignition switch from "off" to "run" three times within five seconds without cranking the engine. Leave it in "run", then count the flashes of the Check Engine light. On most models, if you think you miscounted, turn the ignition switch off, then back to "run" one time and the code sequence will repeat. The first group of flashes is for the first digit, then there's a short pause, then the second digit flashes out the same way. Additional codes will flash in numerical order after a longer pause between them. The last code will be # 55. That just means it's done.
You can go here:
https://www.2carpros.com/articles/retrieve-trouble-codes-for-chrysler-dodge-plymouth-odb1-1995-and-earlier-car-mini-van-and-light-trucks
to see the definitions, or I can interpret them for you. Be aware the codes relevant to this problem often do not set just from cranking the engine. Those defects need more time to be detected, as in when a stalled engine is coasting to a stop. For that reason, it would be nice to know the history that led up to the current problem. Also, do not disconnect the battery as that will erase any fault codes, then that valuable information will be lost.
Dec 27, 2020 at 3:56 AM
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