1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
Joined
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17,294 Posts
Welcome to Allpar. What refrigerant is in the A/C? I have had compressors drag down and stall engines from over-oiling and compressor seizure. Does the inner A/C clutch pulley hub turn somewhat freely?
Use of OEM O2, MAP, TPS and PCV might be an important consideration here. I have had issues with some aftermarket sensors and valves.
Does this car have an EGR valve? I have had those leak exhaust into the intake at idle, even with the vacuum hose off. The pintle was burnt off the stem causing full EGR all the time.
The TBI fuel injectors were known to have spray pattern issues. Does it drip while idling? It should have a hollow cone shape that can be seen with an advance timing light used as a strobe. Dial it in until the cone is visible.
Timing is checked with the 2-wire coolant sensor disconnected. It will be way retarded if it is left on while checking timing. Disconnecting it will turn on the 'ck eng' (Power Loss) light, but that can be cleared adter the procedure.
While setting timing with an advance timing light, check the cam sprocket timing mark at 0º. The mark should be centered in the belt cover window.
This is OBD1 with the Chrysler diagnostic connector in the engine compartment. It would be interesting to see a health check of the target idle, O2 sensor switching and injector pulsewidth if you have or know someone who has this tool.
Use of OEM O2, MAP, TPS and PCV might be an important consideration here. I have had issues with some aftermarket sensors and valves.
Does this car have an EGR valve? I have had those leak exhaust into the intake at idle, even with the vacuum hose off. The pintle was burnt off the stem causing full EGR all the time.
The TBI fuel injectors were known to have spray pattern issues. Does it drip while idling? It should have a hollow cone shape that can be seen with an advance timing light used as a strobe. Dial it in until the cone is visible.
Timing is checked with the 2-wire coolant sensor disconnected. It will be way retarded if it is left on while checking timing. Disconnecting it will turn on the 'ck eng' (Power Loss) light, but that can be cleared adter the procedure.
While setting timing with an advance timing light, check the cam sprocket timing mark at 0º. The mark should be centered in the belt cover window.
This is OBD1 with the Chrysler diagnostic connector in the engine compartment. It would be interesting to see a health check of the target idle, O2 sensor switching and injector pulsewidth if you have or know someone who has this tool.