stumbling start and accelleration hesitation
Hello everyone. My 90 Topaz for years has stumbled and bumbled when I start it cold. If it sits overnight, it seems to have this problem. I have ruled out fuel pump problems as I turn the ignition on and allow the fuel pump to run for 1.5-2 seconds before starting. Once it is started and stumbles for about 4-5 seconds, its idles just fine. As of late, it requires a little throttle to "clean" it out when starting. Might this be caused by a bad air charge sensor?
Second question might be related to the first. When the engine hasn't fully warmed up, there is a hesistation just off idle when accellerating. Once it warms up, it doesn't seem to be there or be as bad. Any ideas?