1987 Dodge Dakota Firing

Tiny
BROKENEGGS
  • MEMBER
  • 1987 DODGE DAKOTA
  • 3.9L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 2,000 MILES
Which Would Make This Truck Not Fire Timing Chain Or Coil?
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Thursday, March 20th, 2014 AT 3:37 PM

10 Replies

Tiny
HMAC300
  • EXPERT
See if the coil fires to the dist cap if it does check the rotor cap an dist cap. If not then check the crank sensor, connection and cam sensor. And fuses and auto shutdown relay
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Thursday, March 20th, 2014 AT 3:43 PM
Tiny
BROKENEGGS
  • MEMBER
Are You Sure This 1987 Model Would Have A Crank Shaft Sensor, Cam Sensor Or Shutdown Relay?
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Thursday, March 20th, 2014 AT 4:01 PM
Tiny
HMAC300
  • EXPERT
My mistake. Here 's how to check it.
Connect Diagnostic Read-Out Box (C-4805) to connector near left front shock tower. Set read/hold switch to "READ" position. Open carburetor switch by placing fast idle speed adjusting screw on highest step of fast idle cam.
Fig. 8: Diagnostic Read-Out Box
Turn ignition switch to "RUN" position and wait for "o" to appear on read-out box display. Move read/hold switch to "HOLD" position. Record all codes. If Codes 88-55 or 88-14-5 appear, there are NO fault codes. Proceed to NS6B.
If Codes 88-21-55 or 88-14-21-5 appear, fault is in distributor pick-up coil circuit. Proceed to NS6C (dual pick-up distributor) or NS6D (single pick-up distributor).
If Codes 88-21-26-28-55 or 88-14-21-26-28-5 appear, fault is in distributor/sensor ground circuit. Repair wire to terminal "9" of computer 10-pin connector for an open circuit.
If NO Code 88, proceed to NS6F.
Check pick up coil in distributor 150-900 ohms if no resistance replace it or if to high

Ensure 10-way computer connector and the distributor connector are disconnected. Connect ohmmeter between cavity No. 5 of the 10-way connector and cavity No. 3 of the distributor engine harness connector.
If ohmmeter shows continuity, Replace the computer.
Also check primary and secondary sides of coil.
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Thursday, March 20th, 2014 AT 4:12 PM
Tiny
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  • MEMBER
Sorry But This Vehicle Does Not Have A Computer
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Thursday, March 20th, 2014 AT 5:25 PM
Tiny
HMAC300
  • EXPERT
If it doesn't have a computer it's been modified to not have one. Doyou know what kind of system is in this?
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Friday, March 21st, 2014 AT 6:58 AM
Tiny
BROKENEGGS
  • MEMBER
Are We On The Same Page? Are We Both Referring To My 1987 Dodge Dakota L E 6 Cyl 3.9
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Friday, March 21st, 2014 AT 10:11 AM
Tiny
HMAC300
  • EXPERT
Yup that is what I looked at for causes when I sent the second reply
this is the article of how your truck starts if yo have a carb or fuel injection During cranking, an electrical signal from the distributor is fed into the computer. The computer determines spark timing based on this signal. Spark timing while in "start" mode does not vary as it is dependent upon distributor position.

If start mode fails, engine will not start or run.
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Friday, March 21st, 2014 AT 10:42 AM
Tiny
HMAC300
  • EXPERT
Here is more infor, check start pickup coil should be resistance already given that only works to start the vehicle then the run pickup coil takes over.
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Friday, March 21st, 2014 AT 10:50 AM
Tiny
BROKENEGGS
  • MEMBER
Once Again This Vehicle Does Not Have A Computer! It Does Not Have Fuel Injection, Just A Plain Old Fuel Pump That Requires The Rotation Of The Engine To Be Able To Operate. Just A Plain Old Coil That Was Always Used Before The Thought Of Using A Computer On A Vehicle Was Thought Of.
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Friday, March 21st, 2014 AT 12:57 PM
Tiny
HMAC300
  • EXPERT
Everything that I have sent is for a CARBURETED 1987 DODGE DAKOTA 3.9LV6 with either a one barrel or two barrel holley carb. The computer is at front of right fender if you do not have this system it has been modified or is not a 1987 model year. It will require you to find out what system you have on your vehicle.
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Friday, March 21st, 2014 AT 3:15 PM

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