wow you are fast mover like me 50 years ago.
P0123 - Throttle Position Sensor/Switch A Circuit High Input -- Need to adjust yes,
P0102 - Mass Air Flow MAF Circuit Low - Start by cleaning it , sure
P1500 - Engine Starter Signal Circuit Malfunction - Probably because of the external switch and (yes)
P0340 - Camshaft Position Sensor Circuit Malfunction - Probably out of adjustment, bad or OUCH - the PCM
P0505 - IAC Malfunction - Probably gummed up, try to clean
yes 340 is not good, cmp
cmp sensor is in the is on the cam left.
ckp is behind flywheel where no man can get. lucky you ! not bad!
so CMP is far more easy.
many this old leak oil inside and go funky puck kinds is optical too... (partly) and fails easy.
is your CMP on left cam hockey puck " only ?
timing on CMP is here
http://fixkick.com/IGN_timing/18L/all-IG...ven18L.jpg
same with plastic sensor mounted to it (easy fix)
http://www.fixkick.com/IGN_timing/Hall-o...S-CAS.html
http://www.fixkick.com/IGN_timing/Hall-o...der%20.JPG
before touching that left cam CMP sensor match mark it first, so timing is not lost.
if it has the plugin sensor on the puck, only that needs to be cleaned first, all the metal fuzz off the end. may do that.
the one with a plastic pull off lid one guy opened that, and found a bad O-ring and the leak cause failure. he found seals and posted them here somewhere. $150 sensor up.
the timing freeze jumper works on this car, and set to 5degree BTDC #1 spark plug. (tricky COPS need spark plug extender to set timing, inductive timing light)
P0123 - Throttle Position Sensor/Switch A Circuit High Input -- Need to adjust yes,
P0102 - Mass Air Flow MAF Circuit Low - Start by cleaning it , sure
P1500 - Engine Starter Signal Circuit Malfunction - Probably because of the external switch and (yes)
P0340 - Camshaft Position Sensor Circuit Malfunction - Probably out of adjustment, bad or OUCH - the PCM
P0505 - IAC Malfunction - Probably gummed up, try to clean
yes 340 is not good, cmp
cmp sensor is in the is on the cam left.
ckp is behind flywheel where no man can get. lucky you ! not bad!
so CMP is far more easy.
many this old leak oil inside and go funky puck kinds is optical too... (partly) and fails easy.
is your CMP on left cam hockey puck " only ?
timing on CMP is here
http://fixkick.com/IGN_timing/18L/all-IG...ven18L.jpg
same with plastic sensor mounted to it (easy fix)
http://www.fixkick.com/IGN_timing/Hall-o...S-CAS.html
http://www.fixkick.com/IGN_timing/Hall-o...der%20.JPG
before touching that left cam CMP sensor match mark it first, so timing is not lost.
if it has the plugin sensor on the puck, only that needs to be cleaned first, all the metal fuzz off the end. may do that.
the one with a plastic pull off lid one guy opened that, and found a bad O-ring and the leak cause failure. he found seals and posted them here somewhere. $150 sensor up.
the timing freeze jumper works on this car, and set to 5degree BTDC #1 spark plug. (tricky COPS need spark plug extender to set timing, inductive timing light)
http://www.fixkick.com