Hard Start Coolish Mornings

[conotech]

Last spring a problem suddenly developed on my 89 Volvo 245 (B230F).

The first start of the day on cool dry mornings is uneventful.

As the car warms up (temperature gauge needle moves into normal mid-range), if I turn off the car engine, then attempt to restart, the engine is difficult to start. If I nurse the accelerator pedal, I can get the engine to start but it misses a lot and seems barely to run. Within a minute of this, it resumes normal operation.

A similar scenario occurs after the initial start when coming to a stop (stopping at an intersection for instance). When I attempt to accelerate, the engine stumbles and sometimes simply quits.

In all cases, all subsequent starts are normal until the engine completely cools again.

During the warm part of the summer, this problem stopped happening. Now that the weather is cooling off (low 60's), the problem has resumed.

The problem is reliably consistent on cool mornings, dry or wet. No engine service lights are displayed.

Any ideas what might be causing this?

Thank you

[93Regina]

Clean off your AMM

Bad MAF Sensor? Overview, Symptoms, & Troubleshooting

[RickHaleParker]

Try this: Turn key on, wait 5 seconds, then start.

[conotech]

93Regina and RickHaleParker: I'll follow up accordingly over the next few days. Thank you.

[93Regina]

Turn key on, wait 5 seconds, then start.

How about, listen for fuel pump to engage?