starionhk Posted September 11, 2014 Report Share Posted September 11, 2014 At a cold start, the engine doesn't idle any faster as it just remains at steady 8-900rpm. When AC is switched on rather than increasing rpm, it decreases . Please kindly suggest. Many thanks. Link to comment Share on other sites More sharing options...
Shelby Posted September 11, 2014 Report Share Posted September 11, 2014 ok for starters do a sensor operational test , not perform a tps adjustment procedure but make sure they are performing , then test connectors , this is very important is also including the wiring tothe plugs a sensor with poor wireing to it will never work once you prove all the sensors are all working this includes , the tps , mps ,coolant temp sensor, isc motor , 02 sensor , air mass sensor and all the wiring , now make sure all engine mechanical is perfict , including ign timing and ALL vacuum hoses are free of any leaks .. you can finealy do the tps , mps , and idle rpm adjusting procedure always follow the instructions to the letter Link to comment Share on other sites More sharing options...
hunter85 Posted September 11, 2014 Report Share Posted September 11, 2014 +1 ISC is where I would start if It goes click click click and doesnt zip and stop likes its supposed to it bad lol you can also do a voltage test on it not sure of the spec good luck finding one it takes a while unless your sitting on some Link to comment Share on other sites More sharing options...
starionhk Posted September 11, 2014 Author Report Share Posted September 11, 2014 Thanks for replies gentlemen Link to comment Share on other sites More sharing options...
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