engine cranks no start

1999 PLYMOUTH VOYAGER

189,623 MILES • 3.3L • 6 CYL • 2WD • AUTOMATIC

PANCHO G

MEMBER
1 POST

I shut the van off and went to start it and it would crank over but not start. I checked for spark and no spark. I replaced the crankshaft sensor and coil assembly and still no spark but cranks fine. I tried hooking up a scanner but it says there is no communication with the scanner. Please help.

May 7, 2022 at 2:01 PM

JACOBANDNICKOLAS

✓ASE Certified Mechanic
110,194 POSTS

Hi,

The first thing that comes to mind is the ASD relay (auto shut down). It is located in the under-hood fuse box. See pic 1 for location.

Switch that relay with a different one having the same part number to see if it makes a difference. If there isn't one, here is a link that explains how to test it:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

If that checks good, go to the data link connector and check pin 16 for 12v battery power. Also, confirm pins 4 and 5 have continuity to ground. (See pic 2)

Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-wiring

Let me know what you find.

Take care,

Joe

See pics below.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
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May 7, 2022 at 10:36 PM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.