jase_93tt Posted December 9, 2006 Share Posted December 9, 2006 houston we have a problem Im getting the warning and engine lights permanently on (although they are not flashing). Stuck in the diagnostic equipment and Im getting error codes 31 and 13, which are Intake Air pressure sensor/vaccum sensor - abnormal signal and No RPM signal to ecu when engine speed is over 1000rpm, respectively. If I turn on the ignition and keep the revs above 1000rpm, both lights do not light up, but as soon as the revs drop down below 1000rpm, they come on. When the cams where first installed, the idling was crap, so the pulleys have been adjusted accordingly to improve idling. Not sure whether both lights came on as soon as the cams where installed, or after the pulleys had been adjusted. Had a greddy cam belt and aluminium pulleys installed at same time. Anyone any ideas on what could be causing the error codes ? Car drives beautifully, regardless Ta Jase Link to comment Share on other sites More sharing options...
TLicense Posted December 9, 2006 Share Posted December 9, 2006 You got them in the right way around yeah? There is a lug that the cam position sensor picks up on the inlet cam (Can't think if it's possible to get them in the wrong way) Just thinking if it's possible to put the exhaust cam in the inlet side and vice versa, then the ecu won't see it, but may well be able to run off of the crank sensor? Not sure why that would flag up a pressure sensor issue? Link to comment Share on other sites More sharing options...
Lucifer Posted December 9, 2006 Share Posted December 9, 2006 You got them in the right way around yeah? There is a lug that the cam position sensor picks up on the inlet cam (Can't think if it's possible to get them in the wrong way) Just thinking if it's possible to put the exhaust cam in the inlet side and vice versa, then the ecu won't see it, but may well be able to run off of the crank sensor? Not sure why that would flag up a pressure sensor issue? Yup that Link to comment Share on other sites More sharing options...
SimonB Posted December 9, 2006 Share Posted December 9, 2006 You can't get them the wrong way round. You can accidentaly put the intake one in the exhaust side but not the other way round as the front bearing is wider on the exhaust cam. Link to comment Share on other sites More sharing options...
jase_93tt Posted December 9, 2006 Author Share Posted December 9, 2006 Im pretty certain the cams are the right way round I wonder if the problem Im experiencing is a common one ? Probably best to put the timing back to stock and see if the lights go out and take it from there. Cant think of anything else that could be causing the warning lights to come on, at the moment. Link to comment Share on other sites More sharing options...
TLicense Posted December 10, 2006 Share Posted December 10, 2006 OK so you need to check the outputs from the camshaft position sensors and the crank sensor. I'm sure it's going to be one of these two.... I've not got my service manual with me, but if no-one has posted how to check these two sensors by the morning, then I'll post up how to check them. Link to comment Share on other sites More sharing options...
TLicense Posted December 10, 2006 Share Posted December 10, 2006 Actually, just remembered I had this:- CAMSHAFT POSITION SENSOR 1) Disconnect electrical connector from camshaft position sensors, located on side of cylinder head, near intake manifold. See Fig. 3. Using ohmmeter, check resistance between electrical terminals on each camshaft position sensor. 2) Replace camshaft position sensor if resistance is not within specification. See CAMSHAFT POSITION SENSOR RESISTANCE table. Reinstall electrical connectors on camshaft position sensors. CAMSHAFT POSITION SENSOR RESISTANCE TABLE Application Ohms Aisan Sensor Cold (1) ........................................... 985-1600 Hot (2) ........................................... 1265-1890 Nippondenso Sensor Cold (1) ........................................... 835-1400 Hot (2) ........................................... 1060-1645 (1) - Cold is with temperature of 14-122 F (-10-50 C). (2) - Hot is with temperature of 122-212 F (50-100 C). Link to comment Share on other sites More sharing options...
jase_93tt Posted December 10, 2006 Author Share Posted December 10, 2006 Thanks Tony. I will check the sensors shortly. Link to comment Share on other sites More sharing options...
jase_93tt Posted December 16, 2006 Author Share Posted December 16, 2006 Sorted the cams out today. Was just a case of adjusting the intake cam pulley every so slightly so that the lights have gone out Link to comment Share on other sites More sharing options...
Guest crowbar Posted December 18, 2006 Share Posted December 18, 2006 I have 264 cams fitted to my 2jz-gte and adjustable cam geras and have exactly the same problem. it was like it when i purchased the car. which way did you have to adjust the intake cam? Link to comment Share on other sites More sharing options...
jase_93tt Posted December 18, 2006 Author Share Posted December 18, 2006 U got mail Link to comment Share on other sites More sharing options...
Wez Posted December 18, 2006 Share Posted December 18, 2006 Can someone explain whats happening here then, why does the gear need moving and what tool are you using to make sure its in the correct place? Link to comment Share on other sites More sharing options...
Lucifer Posted December 18, 2006 Share Posted December 18, 2006 Can someone explain whats happening here then, why does the gear need moving and what tool are you using to make sure its in the correct place? You need to have them Dialled in properly by Someone who knows what they are doing. You cant simply put a set of verniers on and they will give you benifit. Link to comment Share on other sites More sharing options...
Wez Posted December 18, 2006 Share Posted December 18, 2006 Thats my point, sounds like there was an error light on so they adjusted the gears until it went out. Doesnt sounds right to me. Link to comment Share on other sites More sharing options...
jase_93tt Posted December 20, 2006 Author Share Posted December 20, 2006 The stock ecu dosnt like it when the cam timing has been adjusted too far in advance (or maybe retarded also). So if the timing is past that certain point, it throws up an error. Just a case of altering the timing back towards the stock timing position, bit by bit, until the lights go out. Link to comment Share on other sites More sharing options...
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