nobangmycar Posted April 27, 2016 Share Posted April 27, 2016 I have an A32 Cefiro S-Touring as my DD and it has an intermittent issue that is a real pain, especially when I have the caravan on! Car has always been maintained perfectly and belonged to ex-service manager at local Nissan Dealer before me, perfect inside and out, VQ20DE, 170km. When I lift off down hills (I live in Dunedin, so all the freakin' time) and then pull it down a cog it runs fine, but then when you stop at the bottom it stalls out when it returns to idle. It only does this when you have held it back with reasonable revs on and no throttle in high vacuum situations. Gives you a fright when you hit the intersection at the bottom and all of a sudden you have no power steering! If you leave it in top and fry the brakes it doesn't cut out. I notice that it has had a second hand AFM fitted in the past also, but it hasn't fixed it/problem reoccurring. When it stalls it starts again every time but does smoke a little on start up and takes a few extra cranks (injectors confused?)... Ideas on where to start? Quote Link to comment Share on other sites More sharing options...
chris r Posted April 27, 2016 Share Posted April 27, 2016 Replace coolant temp sensor. I've replaced countless ones on taxis for similar issues. Give afm a clean too Quote Link to comment Share on other sites More sharing options...
nobangmycar Posted April 28, 2016 Author Share Posted April 28, 2016 Replace coolant temp sensor. I've replaced countless ones on taxis for similar issues. Give afm a clean too Just the sort of answer I was looking for! Will try that and see how I go. Why the coolant temp sensor? ECU thinks engine temp too cold and dumps in too much fuel or something? Also, where might I find said sensor Chris? Quote Link to comment Share on other sites More sharing options...
kyteler Posted April 28, 2016 Share Posted April 28, 2016 It'll generally be near the thermostat area. It should be 22630 on this diagram so look in that basic area of yours; 2 Quote Link to comment Share on other sites More sharing options...
kyteler Posted April 28, 2016 Share Posted April 28, 2016 It likely looks something like this; So basically just something that has a two pin plug on it that's positioned in the flow of the coolant 1 Quote Link to comment Share on other sites More sharing options...
nobangmycar Posted April 28, 2016 Author Share Posted April 28, 2016 It'll generally be near the thermostat area. It should be 22630 on this diagram so look in that basic area of yours; Man you guys are seriously awesome! I ask one question and get an exploded view diagram and a picture of the replacement sensor! I really appreciate your help and the effort you have gone to for a simple task. Cheers! Quote Link to comment Share on other sites More sharing options...
chris r Posted April 28, 2016 Share Posted April 28, 2016 Just the sort of answer I was looking for! Will try that and see how I go. Why the coolant temp sensor? ECU thinks engine temp too cold and dumps in too much fuel or something? Also, where might I find said sensor Chris? Pretty much. most of the time they will go silly and ecu wont bring up a code as its "within limits" so if engine is warm and sensor says its cole it'll try richen it up wetc Quote Link to comment Share on other sites More sharing options...
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