it de pends on what is is doing i had some wat of the same set up most rebild starters from autoparts crank fine at first than they start dying for some reason i did have a problem with the cheap aluminum wires from factory is an old car and im sure never replaced .. so i would try that cuz that did bhelp the situation and i used 2 gauge wire and if its not much trouble a few more grounds attached from the chassis or firewall to engine are not bad investment .. so i guess check connection and if anything try to go to a junk yard and find a few of them that could be potentionally worht buying try them.. u should have a difference .. also make sure battery is extremely good.. rotary are known to start right away on good compresison but ones miles are on them compression is fine but a bit low not like factory and they tend to take a few more turns to start up .. i could go on but ill bored u... lmk if u eed any help hope that helped u