cold start problem with no codes.
I would look at the temperature sensor signal with a durametric or better yet an oscilloscope and someone who is good at reading them. could be a lazy signal from the temp sensor.
I was going to say do the same with the MAF sensor but I see you changed it out.
These are just guesses on my part. But given it is a cold start problem with no codes it is where I would start.
just thought of this.
Very first thing I would do is a vacuum test both dead cold. (see if you can get someone to hold the RPM at a steady level). And warmed up. try to take vacuum readings at lowest RPM the car will run at cold.
You could have a vacuum leak this seals up once the engine is warm.
Last edited by blue62; 05-30-2019 at 07:11 PM.
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