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2001 Lexus LS430 4.3L Hesitation, Surge, Cuts out, Misfire
At first idle was fine and fuel trims were stable, but would only misfire under load and fuel would trim lean sometimes up to 18+ with no codes at all. Then as time went on it would misfire at idle and fuel trims would be all over the place, but still no c...
FIX posted 3/28/2026
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Message Closed w/FIX
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Related Documents & Media | VIN | JTHBN30F31 |
| Engine | 4.3 L / 8 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Hesitation, Surge, Cuts Out, Misfire |
| Occurs | Cold, Hot, Under Load, Idle, Intermittently |
Trouble Codes
| P0300 | Multiple Misfire Detected |
Message Closed w/FIX
Vehicle Data
2001 Lexus LS430
| VIN | JTHBN30F31 |
| Engine | 4.3 L / 8 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Hesitation, Surge, Cuts Out, Misfire |
| Occurs | Cold, Hot, Under Load, Idle, Intermittently |
Trouble Codes
| P0300 | Multiple Misfire Detected |
Video