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| Solution Number: 23446
Solution Summary: Engine Surges Above 1500 Rpm's
Publication Date: Jan 16 2003
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**Paper copies of solutions may not be the most current solutions**
Symptom:
Engine surges when above 1500 rpm and runs normal under 1500 rpm. Will happen after first start of day and won't repeat.
Pressing the code button on the side console will display code ECU 034 or ECU 041 or PCU 040.
Problem:
On early tractors the ECU controller is sensitive to key switch contact bounce.
Solution:
Tractors below serial numbers listed below require an additional harness RE71260. Install RE161437 relay in additional harness.
Serial number range:
8100 ( -002801) 8200 ( -002215) 8100T ( - ) 8200T ( - )
8300 ( -003400) 8400 ( -002531) 8300T ( - ) 8400T ( - )
Instructions for installing RE71260 K13 relay wire harness:
1. Install circuit 002 (eyelet terminal) to red junction block inside right hand console.
2. Mount relay connector inside right hand console near load center.
3. Remove fuse 12 from Load Center.
4. Remove circuit 022B from Load Center fuse 12 position cavity A, cut end off and splice to circuit 022 of harness.
5. Remove circuit 322 from Load Center fuse 12 position cavity B, cut end off and splice to circuit 322 of harness.
6. Install circuit 002 (Pack-Con Autofuse Terminal) into fuse 12 position cavity A of Load Center.
7. Install circuit 202B (Pack-Con Autofuse Terminal) into fuse 12 position cavity B of Load Center.
8. Install circuit 011 (280-series terminal) into relay position DB1 cavity 3 of Load Center
9. Reinstall 20A fuse in Load Center position 12.
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8400T, 8100, 8300T, 8200, 8200T, 8300, 8100T, 8400
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START, LOSS, COLD, POWER, SPEED, MASK, CODE, SURGE, RPM, HESITATE, ERRATIC, LOW, FUEL, INJECTION, SPEC, CONTROL, PTS, RE71260 RE161437, ENG, F1808, F0400, F0413
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JD 8100 code diagnoses
