‘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]

I’m an Air Force transplant here since 2019. My actual citizenship belongs to the Republic of Texas. (IMG:style_emoticons/default/shades.gif)
Not much of a car culture around here… mostly a demolition derby.
There is a silver lining though, people who do love cars appreciate seeing cool cars much more because they are so far and few between.

It’s interesting about the old Porsche Audi dealer combo that existed back when these cars were new. There are only 2 Porsche dealers and 2 Audi dealers around DC these days, and I bet they don’t go back far enough to be the same dealership.

It would be cool to know where the old dealer was. I could do a recon for you one day and see what the place looks like now!

On our actual topic, I’ve got a URO replacement temp sensor II en route. I’ll plug it in and see what happens!