1997 Dodge Intrepid P0137

Tiny
VROCRIDER
  • MEMBER
  • 1997 DODGE INTREPID
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
Previous post on this site indicated replacing capacitor in wiring harness ahead of ignition coil pack solved his problem. Where do you find this under the hood? Have replaced O2 sensor & cleaned injectors but no success in eliminating code. Thanks.
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Saturday, December 22nd, 2007 AT 11:23 AM

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Tiny
OLDTECH2
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Capacitor is located about 6" up the harness toward the firewall from the coil. It's shrink wrapped into the harness and is rectangular in shape.

I replaced it with a condenser from an old point type Chevy. My car has run fine since.
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Sunday, December 23rd, 2007 AT 11:18 AM
Tiny
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Thanks. Did replacing this solve the code PO137 issue? Thanks again.
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Sunday, December 23rd, 2007 AT 12:01 PM
Tiny
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Cleared the code and it has not come back.

Good Luck!
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Sunday, December 23rd, 2007 AT 1:54 PM
Tiny
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Thanks. So the capac. Is in the wiring that connects to the coil pack, correct? How did you determine the caqpac. Was bad? Thanks.
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Sunday, December 23rd, 2007 AT 6:16 PM
Tiny
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The capacitor is, in fact, built into the wiring harness. The Dodge dlr told me that the harness had to be replaced to fix the problem.

To verify the cap as bad, I took the car out and got it warmed up. I then got the car in the garage, and took a hair drier and concentrated heat on the cap with the engine idling. As the cap got hot, the engine misfired and eventually died and would not restart. I cooled the cap off with compressed air and the engine restarted and ran smoothly. Just to be sure, I repeated it. Then I had to figure out what to do about it since I wasn't about to replace the engine harness.

I tried to get a matching cap from the local electronics suppliers. None had one with matching specs. Then I thought about a condenser from a point ign. A condenser is nothing but a capacitor under another name. Spent the $3 to get one, soldered it in and problem is solved.
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Sunday, December 23rd, 2007 AT 8:34 PM
Tiny
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Thanks again.
My car does not die just have the 137 CIL issue. Did your issue start with the light and eventually lead to car dieing? Does 137 affect gas mileage?
Can't find the capac. Went to a junk yard & looked at cars with wiring exposed on some cars & still couldn't find it. Focused on wire that connects to coil pack. Correct? Any suggestions? Thanks.
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Monday, December 24th, 2007 AT 7:26 AM
Tiny
OLDTECH2
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The 137 code is a drop in primary voltage to the coil under "full dwell." This means that the primary wire from the pcm has a drop in voltage under acceleration.

My car started with a hiccup under acceleration, then gradually worsened until it shut down under accelearation, then just shut down period when I heated the cap.

Follow the green hot wire from the coil pack. It will lead you right to the cap.
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Monday, December 24th, 2007 AT 4:32 PM

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