‘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]

Wonki, I will pay you money for that manual! Give me that manual lol!

Also, thanks by the way. I’ll chop up a socket and see if I can make that tool.

IMO all these basic sensor are eligible for the modern day remove/replace strategy. They’ve served their time and have earned a retirement. I’ll test it after I take it out and if it’s still good, it earns a place in the spares box!

[wonkipop]

Wonki, I will pay you money for that manual! Give me that manual lol!

Also, thanks by the way. I’ll chop up a socket and see if I can make that tool.

IMO all these basic sensor are eligible for the modern day remove/replace strategy. They’ve served their time and have earned a retirement. I’ll test it after I take it out and if it’s still good, it earns a place in the spares box!

yeah, somehow, as a result of misfortune more than anything else i have ended up still having a car that is very intact.

a pathetic 76 hp L jet 1.8 with star steelies and original paint (with wrinkles and scars like me). my program at this point is to preserve it on as a running artefact and only get rid of any bits i find that are clinically dead. the rest of it can use a walking stick or painkillers to keep going like the owner. the nice thing about the 1.8 though is most or nearly all of them came with the sway bars so are pretty sweet in the suspension/chassis department.

i'll definitely be paying attention to what you discover digging around in yours and any good substitute items.


don't know if you have had prior experience with type 4 engines @Van B, but there are a few dumb little traps in there for the unwary.
check the torque settings for the oil drain screen plug when you do an oil change.
that one caught a few folks out back in the day who were used to type 1 or type3 engines. you don't want to over tighten that one.

another handy little book that fits in your pocket is called technical specifications.
you probably know about it?
its easier sometimes to get torque settings for bolts etc in that than digging through the hundreds of pages in the manual.