Question1984 Spider, Bosch L-Jetronic. I just got my cold-start problem fixed and now it starts IMMEDIATELY upon turning the key, hot or cold. Beautiful!
Problem is, it wants to stall right after it starts, just a second or two later. When I turned the key, after it sat out in the cold all night, it started instantly, then ALMOST died, sputtered, and recovered to a slow idle. It doesn't seem to be a very fast idle, considering it's cold, but it's pretty smooth after a couple seconds of sputtering. From that point on, it runs great.
After it sat all day in the sun, I turned the key and it started immedaitely, then died immediately, like after one second. Did that same thing three time before I held the throttle open a little to keep it alive when it started.
Once it gets past that point, the car runs PERFECTLY.
I know the usual suspects - coolant temperature sensor and auxilliary air valve. What are some easy troubleshooting tests?
Could it just be my engine idle simply needs to be adjusted upward? Or my mixture is too lean upon startup?
This car didn't used to behave this way. It's been like this ever since I got it back from the repair shop where they fixed the cold start problem, which was due to a broken wire to the CSV.
Pretty sure fuel pressure is good.
RECENT NEW PARTS:
Ignition Coil
Battery and terminals
Fuel Pressure Regulator
Plugs
Wires
Distributor Cap, Rotor
Fuel pump (both in-tank and main)
Fuel Filter
AnswerFully warm the idle should be 1000rpm. With the lead to the O2 sensor disconnected attach a digital volt meter the the lead from the O2 sensor and ground and adjust the screw under the plug on the airflow meter to 0.7 to 0.8 volts reattach lead and readjust idle to 1000rpm.
Remove the auxiliary air valve and stick it in the freezer compartment of a refrigerator. See how much it opens then give it 120 degrees F and see if it closes completely.
If the air valve is ok you should have about 800 to 1000 rpm cold after the preceding adjustment.
