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98 dodge ram 1500: spark..the coil crank sensor & pickup coil

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I have a 98 dodge...
I have a 98 dodge ram 1500 no spark changed the coil crank sensor & pickup coil could it be the comptuer
Submitted: 7 years ago.Category: Dodge
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Answered in 1 minute by:
1/11/2011
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
brownjeff
brownjeff, ASE Certified Technician
Category: Dodge
Satisfied Customers: 13,886
Experience: 17 years experience, ASE certified, dealership certified, Service Manager for 15 years,
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Hello and Welcome to JustAnswer,

My name is XXXXX XXXXX I am here to try and assist your with your question. Yes it could be the computer. Do you have a volt meter to do a couple tests with?
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Customer reply replied 7 years ago
yes
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
Do you get voltage to the coil when cranking the engine?
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Customer reply replied 7 years ago
no
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
OK....then remove the asd relay and with the key on tell me which terminals have voltage to them
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Customer reply replied 7 years ago
what is asd relay where and what it looks like
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
ASD= Auto Shut Down

It is located under the hood in the fuse box.

graphic
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Customer reply replied 7 years ago
looking at it from the side the bottom and top right have power
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
Can you tell me the number from this picture? I just want to make sure.

graphic
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Customer reply replied 7 years ago
30 & 86
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
OK.....try switching another relay in the fuse box that looks like the asd relay with it and see if the vehicle will start.
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Customer reply replied 7 years ago
all ready did no start
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
Try jumping from terminal 30 to terminal 87 and see if the vehicle will start
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Customer reply replied 7 years ago
with relay in or out
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
With it out
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Customer reply replied 7 years ago
still nothing
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
OK.....Now I need to know with the key on if getting voltage to the crank sensor and the pick up coil
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Customer reply replied 7 years ago
with a test light no but with a voltage tester seems to be low
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
What voltage reading are you getting?
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Customer reply replied 7 years ago
i dont know my meter is a piece of shit
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
But you do get a reading at both sensors?
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Customer reply replied 7 years ago
yes and on the crank sensor when i touch one termial with the test light the one that has low voltage the realy clicks and the fuel pump starts
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
OK......now I need to know if getting voltage out of the sensors when cranking. You will need to use a paper clip or something small to push into the back of the connector to get a reading. The signal wire is the wire on the other end of the connector. there should be three wires the power wire then the center wire then the signal wore and you need to be on the signal wire. I need to know if you get voltage out when cranking and if the voltage changes
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Customer reply replied 7 years ago
can i get back to you later this evning i need to get a better meter and someone to help
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
ok....that is fine
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Customer reply replied 7 years ago
its craig with that 98 ram no spark I have 5 volts on both sensors I checked for power on the sensors while cranking nothing
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
The connectors were hooked to the sensors while doing the test correct?
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Customer reply replied 7 years ago
yes
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
Not to be dumb but the rotor does turn on the distributor when cranking the engine correct?
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Customer reply replied 7 years ago
yes it does
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
Check the center wire to the sensor to make sure it is a good ground
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Customer reply replied 7 years ago
yes good grd on both
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
If no voltage out either the sensor are bad or your not getting a good reading
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Customer reply replied 7 years ago
is there a test for the crank sensor
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
You just did it and it failed if you have voltage in and none out
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Customer reply replied 7 years ago
well what are the odds both new sensors are bad
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
I know! That is why I was wondering if you got the paper clip in far enough?
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Customer reply replied 7 years ago
i striped part of the wire
Dodge Mechanic: brownjeff, ASE Certified Technician replied 7 years ago
Then the sensor is bad. If you have voltage in and none out and there is a good ground it has to be the sensor
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Customer reply replied 7 years ago
Relist: Incomplete answer.
The answers that were given to me i already had tried prior. i need another possible diagnosis.
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brownjeff
brownjeff
brownjeff, ASE Certified Technician
Category: Dodge
Satisfied Customers: 13,886
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Experience: 17 years experience, ASE certified, dealership certified, Service Manager for 15 years,

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