Question about 1998 Dodge Ram 1500 4WD

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98 dodge no start no turn over nada

I have changed the asd relay new battery connections fuel pump stays running but will not turn over or start

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  • Brandon rodgers Dec 01, 2012

    it allso had an alarm i pulled it out and fixed all wiring still nothing and the fuel pump stays on

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Had same problem with mine, pump was running but no start. It happend to be the little house inside the pump came undone. Put a better clamp on it raised tank and problem solved.

Posted on Dec 22, 2012

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Posted on Jan 02, 2017

emissionwiz
  • 75197 Answers

SOURCE: ASD

What part are you calling the ASD? Yes there is a fuel pump cut off switch.

Posted on Oct 14, 2008

  • 14 Answers

SOURCE: My 1998 dodge ram 2500 will not start. I believe

pound on gas tank an see if it runs if so replace fuel pump

Posted on Mar 06, 2009

MNfisherman
  • 11896 Answers

SOURCE: 1992 Dodge Grand Caravan engine failure

There is not fuse for pump but a relay in the relay block. I do suggest jumping to see if pump turns on. Test voltage from ECM if needed. If voltage is to pump, then pump is shot. If not voltage, relay may be bad

Posted on Sep 11, 2009

  • 226 Answers

SOURCE: 2000 dodge caravan,auto shutdown relay acting sporadically

Check your timing belt. Lee (really I'm serious) if you are not getting the crank/cam position signals it will have this effect. Lee

Posted on Oct 04, 2009

  • 715 Answers

SOURCE: 1993 dodge dakota v6 not staring. Fuel pump is

no spark check elec

Posted on Oct 10, 2009

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1 Answer

Auto shut down fuse blows when I start the truck?


This information is straight out of the 1997 Breeze/Stratus/Cirrus Factory Service Manual (Yes I paid the $90 for it years ago)

__________________________________________________ _______________

Automatic Shutdown (ASD) sense - PCM Input

The ASD sense circuit informs the PCM when the ASD relay energizes. A 12 volt signal at this input indicated to the PCM that the ASD has been activated. This input is used only to sense that the ASD relay is energized.
When energized, the ASD relay supplies battery voltage to the fuel injectors, ignition coils, and the heating element in each oxygen sensor. If the PCM does not receive 12 volts from this input after grounding the ASD reley, it sets a Diagnostic Trouble Code (DTC).

Automatic Shutdown Relay - PCM Output

The PCM operates the Automatic Shutdown (ASD) relay and fuel pump relay through one ground path. The PCM operates them by switching the ground path for the solenoid side of the realys on and off. Both realys turn on and off at the same time.
The ASD relay connects battery voltage to the fuel injectors and ignition coil. The fuel pump relay connects battery voltage to the fuel pump.
A buss bar in the power distribution center (PDC) supplies voltage to the solenoid side and contact side of the relay. The ASD relay power circuit contains a 20 amp fuse between the buss bar in the PDC and teh relay. The fuse also protects the power circuit for the fuel pump relay and pump. The fuse is located in teh PDC.
The PCM controls the relay by switching the ground path for the solenoid side of the relay on and off. The PCM turns the ground path off when the ignition switch is in the Off position. When the ignition switch is in the On or Crank position, the PCM monitors the crankshaft position sensor and the camshaft position sensor signals to determine engine speed and ignition timing (coil dwell). If the PCM does not receive the crankshaft position sensor and camshaft position when the ignition switch is in teh Run position, it will de-energize teh ASD relay.
The ASD relay and fuel pump relay are located in the PDC near the battery. The inside top of the PCD cover has a label showing relay and fuse location.

ASD and Fuel Pump Relays

The following description of operation and tests apply only to the Automatic Shutdown (ASD) and fuel pump relays. The terminals on the bottom of each relay are numbered.

'------------------'
' __85 ___________'
' __87A '87 '30 ___' Sorry for the crudeness of this. This is supposed to
' __86 ___________' be the relay terminals!
'------------------'

OPERATION
- Terminal number 30 is connected to battery voltage. For both the ASD and fuel pump relays, terminal 30 is connected to battery voltage at all times.
- The PCM grounds the coil side of the relay through terminal number 85.
- Terminal number 86 supplies voltage to the coil side of the relay.
- When the PCM de-energizes the ASD and fuel pump relays, terminal number 87A connects to terminal 30. This is the Off position. In the off position, voltage is not supplied to the rest of the circuit. Terminal 87A is the center terminal on the relay.
- When the PCM energizes the ASD and fuel pump relays, terminal 87 connects to terminal 30. This is the On position. Terminal 87 supplies voltage to the rest of the curcuit.

TESTING
The following procedure applies to the ASD and fuel pump relays.
(1) Remove relay from connector before testing.
(2) With the relay removed from the vehicle, use an ohmmeter to check the resistance between terminals 85 and 86. The resistance shoud be 75±5 ohms.
(3) Connect the ohmmeter between terminals 30 and 87A. The ohmmeter should show continuity between terminals 30 and 87A.
(4) Connect the ohmmeter between between terminals 87 and 30. The ohmmeter should not show continuity at this time.
(5) Connect one end of a jumper wire (16 guage or smaller) to relay terminal 85. Connect the other end of the jumper wire to the ground side of a 12 volt power source.
(6) Connect on end of another jumper wire (16 guage or smaller) to the power side of the 12 volt power source. Do not attach the other end of the jumper wire to the relay at this time.

WARNING: DO NOT ALLOW OHMMETER TO CONTACT TERMINALS 85 OR 86 DURING THIS TEST.

(7) Attach the other end of the jumper wire to relay terminal 86. This activates the relay. The ohmmeter should now show continuity between relay terminals 87 and 30. The ohmmeter should not show continuity between relay terminals 87A and 30.
(8) Disconnect jumper wires.
(9) Replace the relay if it did not pass the continuity and resistance tests. If the relay passed the tests, is operates properly. Check the remainder of the ASD and fuel pump curcuits.

__________________________________________________ _______________

I know you said you replaced the relay, and this is a test procedure for the relay, but I have bought bad parts in the past. The description before the test procedure at least gives you an idea of what components are wired through and controlled by the relay. One of those may be faulty. Email me if you want or need wiring diagrams and I should be able to scan them and email them to you.

Jul 15, 2015 | 1992 Dodge Dakota

1 Answer

2001 Dodge Grand Caravan alternator went bad. We replaced it. Now won't start. Will turn over but not fire. Getting code 168.8. ASD relay doesn't read any voltage at the socket. We have replaced ASD relay....


Hello,

Have you tried to jump the battery with another car?
The alternator keeps the vehicle running does not start the vehicle.
I hope this helps.

Oct 21, 2013 | Cars & Trucks

1 Answer

Had front-end collision damage fixed and drove the 1997 grand caravan home; turned it off; and later it wouldn't start. Turns over ok, but not getting gas. I think it is the fuel pump relaty. There...


There is a relay for the fuel pump its controled by thhe ASD relay sure you plug a new relay or even swap it out with other relay in the distribution area but you need to make sure why you are not getting fuel check thhe fuel pump fuse is it open if it is replace it and does it blow easy now turn the key and cycle the switch you should hear the fuel pump humming if it doesnt go ahead find the relay take thhe relay cover out and expose the switch are and put it back in its socket key on or off if you collapse the realy to close thhe switch you should hear the fuel pump running if it doesnt you either have a failed fuel pump a bad connection or something not allowing the ASD to engage

Aug 21, 2011 | 2000 Dodge Caravan

1 Answer

91 dodge ram 150 starts and quit some time starts and runs fine until i try to start it again dont matter cold or hot replaced fuel pump


There is a box under the hood next to the battery with fuses and relays.
there is a fuel pump relay and or Auto shut down relay that could be bad.
It shuts down the entire system ignition and or fuel pump.
ASD Relay.

May 21, 2011 | 1991 Dodge Ram 150

3 Answers

I have a 02 grand caravan, there is fuse call asd that keeps on blowing.


Well in a short term, you have a short circuit somewhere. Here is a detailed toturial for you. Please rate this post, thank you.

Automatic Shutdown (ASD) sense - PCM Input

The ASD sense circuit informs the PCM when the ASD relay energizes. A 12 volt signal at this input indicated to the PCM that the ASD has been activated. This input is used only to sense that the ASD relay is energized.
When energized, the ASD relay supplies battery voltage to the fuel injectors, ignition coils, and the heating element in each oxygen sensor. If the PCM does not receive 12 volts from this input after grounding the ASD reley, it sets a Diagnostic Trouble Code (DTC).

Automatic Shutdown Relay - PCM Output

The PCM operates the Automatic Shutdown (ASD) relay and fuel pump relay through one ground path. The PCM operates them by switching the ground path for the solenoid side of the realys on and off. Both realys turn on and off at the same time.
The ASD relay connects battery voltage to the fuel injectors and ignition coil. The fuel pump relay connects battery voltage to the fuel pump.
A buss bar in the power distribution center (PDC) supplies voltage to the solenoid side and contact side of the relay. The ASD relay power circuit contains a 20 amp fuse between the buss bar in the PDC and teh relay. The fuse also protects the power circuit for the fuel pump relay and pump. The fuse is located in teh PDC.
The PCM controls the relay by switching the ground path for the solenoid side of the relay on and off. The PCM turns the ground path off when the ignition switch is in the Off position. When the ignition switch is in the On or Crank position, the PCM monitors the crankshaft position sensor and the camshaft position sensor signals to determine engine speed and ignition timing (coil dwell). If the PCM does not receive the crankshaft position sensor and camshaft position when the ignition switch is in teh Run position, it will de-energize teh ASD relay.
The ASD relay and fuel pump relay are located in the PDC near the battery. The inside top of the PCD cover has a label showing relay and fuse location.

ASD and Fuel Pump Relays

The following description of operation and tests apply only to the Automatic Shutdown (ASD) and fuel pump relays. The terminals on the bottom of each relay are numbered.

'------------------'
' __85 ___________'
' __87A '87 '30 ___' Sorry for the crudeness of this. This is supposed to
' __86 ___________' be the relay terminals!
'------------------'

OPERATION
- Terminal number 30 is connected to battery voltage. For both the ASD and fuel pump relays, terminal 30 is connected to battery voltage at all times.
- The PCM grounds the coil side of the relay through terminal number 85.
- Terminal number 86 supplies voltage to the coil side of the relay.
- When the PCM de-energizes the ASD and fuel pump relays, terminal number 87A connects to terminal 30. This is the Off position. In the off position, voltage is not supplied to the rest of the circuit. Terminal 87A is the center terminal on the relay.
- When the PCM energizes the ASD and fuel pump relays, terminal 87 connects to terminal 30. This is the On position. Terminal 87 supplies voltage to the rest of the curcuit.

TESTING
The following procedure applies to the ASD and fuel pump relays.
(1) Remove relay from connector before testing.
(2) With the relay removed from the vehicle, use an ohmmeter to check the resistance between terminals 85 and 86. The resistance shoud be 75±5 ohms.
(3) Connect the ohmmeter between terminals 30 and 87A. The ohmmeter should show continuity between terminals 30 and 87A.
(4) Connect the ohmmeter between between terminals 87 and 30. The ohmmeter should not show continuity at this time.
(5) Connect one end of a jumper wire (16 guage or smaller) to relay terminal 85. Connect the other end of the jumper wire to the ground side of a 12 volt power source.
(6) Connect on end of another jumper wire (16 guage or smaller) to the power side of the 12 volt power source. Do not attach the other end of the jumper wire to the relay at this time.

WARNING: DO NOT ALLOW OHMMETER TO CONTACT TERMINALS 85 OR 86 DURING THIS TEST.

(7) Attach the other end of the jumper wire to relay terminal 86. This activates the relay. The ohmmeter should now show continuity between relay terminals 87 and 30. The ohmmeter should not show continuity between relay terminals 87A and 30.
(8) Disconnect jumper wires.
(9) Replace the relay if it did not pass the continuity and resistance tests. If the relay passed the tests, is operates properly. Check the remainder of the ASD and fuel pump curcuits.

__________________________________________________ _______________

I know you said you replaced the relay, and this is a test procedure for the relay, but I have bought bad parts in the past. The description before the test procedure at least gives you an idea of what components are wired through and controlled by the relay. One of those may be faulty. Email me if you want or need wiring diagrams and I should be able to scan them and email them to you.

I hope this helps.

Please rate this post, thank you

Apr 07, 2011 | Dodge Grand Caravan Cars & Trucks

2 Answers

1999 dodge caravan 3.0 liter. fuel pump relay not getting voltage


Have you checked the ASD (Automatic Shut Down) Relay? Check to see if that is getting power. Then check to see if the ASD Relay itself is good. You do not have to use any special tools/knowledge to check this. You can change this Relay out with another Relay that is the same shape and type on a function that is known working. For example: Check to see if your Front Windshield Wipers are working. Change out the ASD Relay with this Front Windshield On/Off Relay. Check the Wipers again. If it does not work, then the ASD Relay is bad. With the Front Wiper Relay in the ASD now check for power to the Fuel Pump Relay.
One additional fact: IF the Crankshaft Position Sensor is bad the Engine will not operate at all, meaning there will be no power sent to anything including the fuel pump relay!

Nov 25, 2009 | 1999 Dodge Caravan

3 Answers

It want start


Double check your connections and replace the fuse. That sound usually indicates there is a short.

Aug 27, 2009 | 2000 Jeep Grand Cherokee

1 Answer

Engine shuts down right after starting


Have you checked your fuel pump pressure since you changed your fuel pump? And I guess you changed your fuel pump relay since you said you changed every relay. What about your ASD relay (Auto shutdown Relay)? Your fuel pump pressure at idle no load should be 35-45 if it stays running that long. That is for a 5.9 engine, not sure what you have. Here are some of the suggestions:
STARTS BUT STALLS:
Check coolant temperature sensor
Check crankshaft position sensor
Check TPS and connector (if applicable)
Check ignition and sensor wires for proper connection
Check fuel injectors


Aug 04, 2009 | 1994 Dodge Ram

1 Answer

My 98 dakota wont fire


Check your Automatic Shutdown Relay in your fuse and relay box under the hood by the battery. The power supplied to the fuel pump, ignition coil, fuel injectors,  and parts of the power module is controlled by the logic module through the Automatic Shutdown Relay (ASD); the idea is to shut off fuel pressure and the ignition systems when the key is turned off to prevent fires, dieseling, and other problems.
The ASD relay is closed (allowing power to flow through it) when the ignition is first turned on. If the signal from the ignition reference is lost while the engine is running, the logic module cuts power to the ASD, which in turn removes power from the fuel pump, ignition coil, injectors and those parts of the power module.  This causes the engine to shut down.

The logic module monitors the relay driver.  If it senses that the relay driver is not responding correctly it will trigger a code. If the logic module does not sense an absence of current when the circuit is open, or 12 volts DC when the circuit is closed, it knows that the circuit is open or shorted, and triggers code 42. Failure of the automatic shutdown relay is often shown as inexplicable stalling or refusal to start. Good luck and hope this helps lead you in the right direction. Hint: The ASD can be triggered by a broken wire or short in another place, e.g. the fuel pump. 

Jul 04, 2009 | 1998 Dodge Dakota

3 Answers

1998 Dodge Ram will not start -


check the asd relay in fuse box under hood look very close at contacts if replacing fuse does not fix wires in box may be burnt under neath

Dec 26, 2008 | 1998 Dodge Ram 1500 4WD

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