ZR-1 Net Registry Forums - View Single Post - Slow start & alarm issues

Tom · 10-19-2006

I've had my '90 for over 15 years and sometimes it starts almost immediately and other times it cranks for what seems several seconds. I've gotten used to the sometimes long starting times since I don't really notice it any more. This website and other information was not available when I bought mine but I quickly learned that it sometimes tooke a while to start and to keep the key in the start position until the engine was definitely running or it was prone to backfiring and popping off the pcv valve and map connections.

You can follow the procedure in the shop manual to see if any codes are set, I have done this before and just got the code that says the ecm is functioning properly. You could do the fuel pressure bleed down check to make sure your fuel injectors aren't leaking and causing a slight flooding condition when the car is shut off.

Another thing that will happen with the alarm is if you have a passenger and you get out first and use the electric door lock switch to lock the car, close your door, and then the passenger unlocks their door and gets out, the alarm will go off.

10-19-2006	#4
Tom Join Date: Jan 2004 Location: Southern CA Posts: 108	Re: Slow start & alarm issues - Help I've had my '90 for over 15 years and sometimes it starts almost immediately and other times it cranks for what seems several seconds. I've gotten used to the sometimes long starting times since I don't really notice it any more. This website and other information was not available when I bought mine but I quickly learned that it sometimes tooke a while to start and to keep the key in the start position until the engine was definitely running or it was prone to backfiring and popping off the pcv valve and map connections. You can follow the procedure in the shop manual to see if any codes are set, I have done this before and just got the code that says the ecm is functioning properly. You could do the fuel pressure bleed down check to make sure your fuel injectors aren't leaking and causing a slight flooding condition when the car is shut off. Another thing that will happen with the alarm is if you have a passenger and you get out first and use the electric door lock switch to lock the car, close your door, and then the passenger unlocks their door and gets out, the alarm will go off.