‘74 1.8L L-Jetronic Cold Start Low Idle, Mystery solved! Options

[Van B]

Ok fellas, here’s the run down Aux Air Regulator (AAR) and Cold Start Valve (CSV)/injector both work fine. Many of you have also been keeping up with my high idle issue that we figured out.

But yet, when the car is cold, i.e. room temp, I don’t get the high idle I should on start-up. Instead she cranks a bit and then lumbers to life. Idle lopes around 700-800rpm and then smooths out as it warms.

In all other aspects of operation, the engine seems to be pretty happy.

Thoughts? Experience? (IMG:style_emoticons/default/confused24.gif)

-Van

See post #419 on page 14 for a synopsis of the outcome.

[Van B]

Found this on the YouTubes:

https://www.youtube.com/watch?v=FGEvf16nNQM


This is exactly what my car is like on cold start.

Continuing with the inference of my previous post, is there ANYONE with a 1.8L that actually gets a high idle from their car when starting from cold?
https://youtu.be/FGEvf16nNQM

[StarBear]

Found this on the YouTubes:

https://www.youtube.com/watch?v=FGEvf16nNQM


This is exactly what my car is like on cold start.

Continuing with the inference of my previous post, is there ANYONE with a 1.8L that actually gets a high idle from their car when starting from cold?
https://youtu.be/FGEvf16nNQM

Nope, but I like to set my idle a bit higher, at 950-1000 rpm so that might be masking it. Sealed up the connection downstream from the AAR to the air box as I couldn’t get a leak free seal. Two wraps of black electrical tape.
This is a much- needed thread. Destined to be a classic for 2-port 1.8L cars.