An important thing to consider is whether or not the engine is running in open or closed loop mode. When the engine is cold, the ECM sends a pre-programmed amount of fuel to the injectors. Once the engine is warmed up, it switches to closed loop mode and begins monitoring the O2 sensors to set the mixture. First step is to get the codes out of your computer. After having pulled two injectors though, you may have to clear the codes first and then get to misbehave to get a good read on them.
I think John and Dave are both onto something. If the temp sensor is faulty and the ECU thinks the engine is cold, it will always run rich. Typically, you should be able to test the temp sensor with a DVM. When the engine is cold, you would get one ohm range reading and when the engine is hot, the sensor will read a different range of ohms. If you are getting the same readings hot or cold, you have a bad sensor.
many thanks for your help chaps! as the radio i have in the car discharges the battery i disconect it so i guess i have lost any codes. i am now going to run it up till it faults again and try for codes.
i have a 92 and its doin the same thing. it ran great after tune up and then it all went to hell. its now just pouring full throttle at start and bogs the motor out. it barely runs. i pulled the tbi off and cleaned it that should do it. has the car been sittin??
hey! she is sorted. runs best she ever has and i have the service light off now to. i guess the sensor was faulty all the time i have had the car. thanks for the help guys! poasted the same things on a uk forum and not a single message back. THANKS!
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