93 Corvette Stalls when hot
Thread Starter
5th Gear
Joined: Aug 2019
Posts: 5
Likes: 0
From: Aurora CO
93 Corvette Stalls when hot
So I did a couple of searches of the forum and couldn't find my exact problem, my 93 has a tendency to stall at stoplights when it's hot, but unlike everyone else I found on the forum it fires right back up and drives fine right away. I did just have a problem with my evap canister and had hoped when I fixed that the stall would go away but it hasn't. Any ideas?
Safety Car
Joined: Aug 2002
Posts: 3,842
Likes: 230
From: SANTA CRUZ CA
A faulty ignition control module (ICM) will shut down the engine when hot, but will not allow restart until engine cools.
So, it may not be the ICM.
Any codes? (https://www.corvettebuyers.com/c4vettes/codes.htm - click on upper left corner for full menu)
So, it may not be the ICM.
Any codes? (https://www.corvettebuyers.com/c4vettes/codes.htm - click on upper left corner for full menu)
Safety Car
Joined: Aug 2002
Posts: 3,842
Likes: 230
From: SANTA CRUZ CA
You might test fuel pressure. Some shops will test for free.
" The electronic control module (ECM) computer was designed to deliver the correct amount of fuel based on the fuel pressure. If the pressure is too high, too much fuel will be delivered, and performance and economy will suffer. If the fuel pressure is too low, the car will be fuel starved, causing it to stumble and stall. Fuel pressure can be measured at the Schrader valve on the fuel rail with a fuel pressure gauge. Many of the original stock fuel pressure regulators were not adjustable. If fuel pressure is not within specifications, check the fuel filter, fuel pump and regulator in that order."
" The electronic control module (ECM) computer was designed to deliver the correct amount of fuel based on the fuel pressure. If the pressure is too high, too much fuel will be delivered, and performance and economy will suffer. If the fuel pressure is too low, the car will be fuel starved, causing it to stumble and stall. Fuel pressure can be measured at the Schrader valve on the fuel rail with a fuel pressure gauge. Many of the original stock fuel pressure regulators were not adjustable. If fuel pressure is not within specifications, check the fuel filter, fuel pump and regulator in that order."
