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1991 Volvo 740 2.3L Poor Idle Quality, Hesitation, MIL Lamp on
Posted to European Driveability on 5/21/2015 12 Replies

we replaced transmission and now all these problems are occuring. the vehicle has a rough idle and hesitation when accelerationg. the code 321 ( cold start valve ) is in the computer. Fuel pressure is 51 psi at idle and 55 psi when accelerating....... vehicle ...

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  Related Documents & Media  1991 Volvo 740

 
Message Closed w/FIX

car Vehicle Data

1991 Volvo 740

VIN YV1FA8844M
Engine2.3 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / 51psi at idle.....55psi acc
Emissionsus fed
SymptomsPoor Idle Quality, Hesitation, MIL Lamp On
OccursAlways, on Accel, Idle

Trouble Codes

321cold start valve
Message Closed w/FIX

car Vehicle Data

1991 Volvo 740

VIN YV1FA8844M
Engine2.3 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / 51psi at idle.....55psi acc
Emissionsus fed
SymptomsPoor Idle Quality, Hesitation, MIL Lamp On
OccursAlways, on Accel, Idle

Trouble Codes

321cold start valve