I would check the values of CTS. If its giving you more than 3 volts in the morning before cranking the engine, then the CTS is faulty, its flooding the engine.

Also, does your engine have cold start injector?

Ikenna.

Thanks Ikenna for ur response.
What do you mean by CTS? Do you mean coolant temperature sensor or Engine Coolant Temperature(ECT) as my car uses the 2. The former is located @ the lower radiator chamber.

Also,by my understanding,5s Engine in which 1996 Camry uses is not Equiped with Cold Start Injector . It uses ISC valve which I learnt has Manufacturer defect.
Am wondering weda I can use that of a later year say 1997-1999 Camry?

issy1500: Thanks Ikenna for ur response.
What do you mean by CTS valve?

By my understanding,5s Engine in which 1996 Camry uses is not Equiped with Cold Start Injector . It uses ISC valve which I learnt has Manufacturer defect.
Am wondering weda I can use that of a later year say 1997-1999 Camry?

CTS: Coolant Temperature Sensor.

Its usually located around Thermostat housing. It should have 2-wire connector.

Ikenna.

Thanks Ikenna,
I doubt weda the CTS on my car is working right from when I bought the car as a tokunbo 2 years ago oh cos both my ac and radiator fan runs non stop right from when I put on my ignition.
I had even swaped a diff CTS from a colleague about a year ago to know weda my was faulty, still no diff as the my fan still run non stop as against the way it should be (I.e CTS controlling fan operation)
I will check the volt like u av said sha oh

But could a faulty CTS make my car to be having random cylinder misfiring at early morning start up interchangeabilly switching from one cylinder to another from time to time at start up and immediately the car reaches operating temperature all will be well again?

issy1500: But could a faulty CTS make my car to be having random cylinder misfiring at early morning start up interchangeabilly switching from one cylinder to another from time to time at start up and immediately the car reaches operating temperature all will be well again?

Misfiring is usually symptom of an ignition issue.

A faulty CTS would cause engine flooding, hard starting and hesitation at cold start. Am not sure about misfiring.

Ikenna.

I fixed a new fairly used complete distributor and cap that i got and the Cold weather starting difficulty / Multiple cylinder misfiring @ cold start up is now a thing of the past.

@ Ikenna, Thanks for your support. It was quite helpful

THANKS FOR THIS REPLY. it helped me. the only challenge i have now is that when it starts early in the morning it misfires for few minutes but after that,the engine works perfectly well. the car i was working on had the same symptoms like what u described here and it's a 95camry

Ikenna351:


Misfiring is usually symptom of an ignition issue.

I believe you. but do not leave the fuel rail pressure out of your check list