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1990 Lexus LS400 4.0L Poor Idle Quality, Hesitation, Stall, MIL Lamp on
Posted to Asian Driveability on 3/2/2012 11 Replies

The engine idle hunts, and after about 15 seconds it stalls. The engine lacks power. Looking at a wiring diagram the TPS, coolant temperature sensor and the air temperature sensor inside the mass air sensor ALL ground through the same pin on the ecu. I have is...

11 Replies Received (View Replies)

  Related Documents & Media  1990 Lexus LS400

 
Message Closed w/FIX

car Vehicle Data

1990 Lexus LS400

VIN JT8UF11EXL
Engine4.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsFederal
SymptomsPoor Idle Quality, Hesitation, Stall, MIL Lamp On
OccursAlways

Trouble Codes

22Coolant temperature sensor siganl abnormal shorted/open
24Intake air temperature sensor part of Mass Air Sensor
41TPS sigal abnormal
47TPS Shorted/open
Message Closed w/FIX

car Vehicle Data

1990 Lexus LS400

VIN JT8UF11EXL
Engine4.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsFederal
SymptomsPoor Idle Quality, Hesitation, Stall, MIL Lamp On
OccursAlways

Trouble Codes

22Coolant temperature sensor siganl abnormal shorted/open
24Intake air temperature sensor part of Mass Air Sensor
41TPS sigal abnormal
47TPS Shorted/open