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I'll answer my own question just inn case anyoneever searches this.
the answer is YES
it looks to be a common problem of cps harness melting on exhaust.
The Confirmed fix is to replace harness and re wire
Test Details Hotline Archive # 350825
Confirmed Fix Vehicle Application: 2000 Chevrolet Venture 3.4L 2002 Chevrolet Impala 3.4L, Vin E
Customer Concern: Misfire, bucks, jerks, backfires, stalls while driving. Idles fine.
Tests/Procedures: 1. With the engine in park, rock the vehicle back and forth, watch the wire harnesses and see if it misses or stalls.
2. Inspect the 7X Crankshaft Position (CKP) harness for a rub through by the exhaust. A Purple and Yellow wire go to the sensor from the Ignition Control Module (ICM).
3. Wiggle the connector and see if the engine stalls.
Potential Causes: 7X Crankshaft Position (CKP) Sensor Harness
Wiring Connection
Diagnostic Codes: None
Author: Bill Siegmann
Average Reported Mileage: 109875
Confirmed Fix Summary
Confirmed Fix 4 - 7X Crankshaft Position (CKP) Sensor Harness
1 - Harmonic Balancer
Confirmed Fix Details
Tech Reported Fix Details Confirmed Fix
Steve Norman
April 24, 2009 2001 Pontiac Grand AM, 3.4L, Vin E, Eng Cfg V6 *
Repaired 7X Crankshaft Position (CKP) Sensor Harness
- Found wiring going from crankshaft sensor to ingition module to be touching egr tube. Wiring had melted and shorted out. At times the engine would back fire and stall. Re-routed wiring and installed new loom. 7X Crankshaft Position (CKP) Sensor Harness
Doug Shetron
July 02, 2009 2000 Chevrolet Venture, 3.4L *
Repaired 7X Crankshaft Position (CKP) Sensor Harness — The crank sensor wire was touching the Exhaust Gas Recirculation (EGR) valve tube.
94,500 miles 7X Crankshaft Position (CKP) Sensor Harness
Eric Lewis
July 31, 2009 2002 Chevrolet Impala, 3.4L, Vin E *
Repaired 7X Crankshaft Position (CKP) Sensor Harness
118,000 miles 7X Crankshaft Position (CKP) Sensor Harness
Allan Theimer
November 06, 2008 2000 Chevrolet Venture, 3.4L *
7X Crankshaft Position (CKP) Sensor Harness
106,000 miles 7X Crankshaft Position (CKP) Sensor Harness
Luis Ortega
March 04, 2009 2000 Chevrolet Venture, 3.4L *
Replaced Harmonic Balancer
121,000 miles Harmonic Balancer
- Confirmed Fix - Exact Vehicle Match - Confirmed Fix - Similar Vehicle Match *- Indicates a Similar Vehicle - Not an exact match to the vehicle selected
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