‘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.

[wonkipop]

the master has arrived ( @ClayPerrine ). good.


@Van B .
re AAV.
porsche used the AAV on 1.8s all the way through to the first series 944.
in the 914 PET it has a 944 PN (944 606 103 00). i guess its a supersede part.

i did a bit of searching - 944 AAV problems.

this thread is good.
someone figured out how to really clean them out.
seafoam? got more gunk out of it than carb cleaner.
he further shows how it might be possible to adjust it?

https://rennlist.com/forums/924-931-944-951...tibility-2.html

[StarBear]

the master has arrived ( @ClayPerrine ). good.


@Van B .
re AAV.
porsche used the AAV on 1.8s all the way through to the first series 944.
in the 914 PET it has a 944 PN (944 606 103 00). i guess its a supersede part.

i did a bit of searching - 944 AAV problems.

this thread is good.
someone figured out how to really clean them out.
seafoam? got more gunk out of it than carb cleaner.
he further shows how it might be possible to adjust it?

https://rennlist.com/forums/924-931-944-951...tibility-2.html

Tried it; reminded me of how much I dislike that site - WAY too many pop up ads and crap that only freezes up my computer. Never was able to check out the cleaning comment. (IMG:style_emoticons/default/confused24.gif)