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What would cause your 96 Toyota Tacoma to not start ONLY when the engine is hot and it's a hot day?
This is a known problem with the Tacoma's. I have a 95 with the same problem. The issue appears to be called the heat soak issue.
I changed the EFI relay, intake air temperature sending unit, cleaned the MAF, no change.
The last thing I did was change the thermostat to a Stant 48457 which is 170 degrees and appears to fit perfectly. I did this because I noticed that the water thermal sending unit was showing a spike of up to 25 degrees on a hot day after the vehicle was shut down. I would shut it down at 191 degrees and it should spike to 216. With the new thermostat, I am spiking only to 190 degrees so far and the vehicle is starting ok. However, I need more time to verify that this fixes the issue.
There are those out there that say the issue is leaky injectors, fuel pressure regulator, idle air control valve, etc. I took the truck in to a mechanic and he could not even get the truck to show the symptoms. I believe the idle air control valve is ok because the engine idles higher when the vehicle is cooler indicating that the idle air control valve is receiving the signal from the ECU to add air when the engine is not warmed up.
You can disconnect the intake air temperature sending unit to get the vehicle started in the summer but it will run richer and your mpg could suffer a tiny bit although I have not noticed any issues when I have the IAT disconnected except a check engine light because a circuit is opened. I use a PLX Kiwi on the dashboard hooked up to the OBD II diagnostic plug to get the water thermal sending unit measurements.
What else can I help you with?
If I keep using the clutch start cancel button on my Toyota Tacoma will I damage the truck?
Using the clutch start cancel button on a Toyota Tacoma will damage the truck. Damage can occur to the starter and eventually the engine.
1996 Toyota Tacoma won't start when hot?
After extensive diagnosis of fuel and ignition system, I solved my 1996 Tacoma hot start problem by having the valve clearances set properly. Tight valves cause compression loss and hard starting when the engine is hot.
Why won't my 2001 Toyota Tacoma not to start?
i have a 2001 Toyota Tacoma truck and had an accident and know my truck wont start and i don't have a manual, can you tell me were i can find the cut off switch , thanks.
How do i fix a 2002 Toyota Tacoma missfiring engine?
I would start by replacing the spark plugs and plug wires. If that does not fix the problem seek professional help.
Toyota tacoma auto start system problem?
Try asking a question.
How much does it cost to change the timing belt on Toyota tacoma?
The price to change a timing belt on a Toyota Tacoma will depend on the mechanic fees. The prices for a timing belt start at $232.95.
Can you start your Toyota tacoma truck in the neutral position without pushing in the clutch?
yes but you have to push in your clutch start cancel button
1997 Toyota Camry LE doesn't start right a way What is the cause?
If the check engine light is or has been illuminated, start with checking for codes.
Why does my Toyota Tacoma 2001 not start?
It's broken, theres something wrong? I don't know, take it to the shop...
Why Tacoma will not start but will crank over?
Its the cold start fuel sensor giving you troubles. Its flooding the engine with fuel.
What could be the cause hard to start 1993 Toyota Camry 4cylnder when engine cranks but often will not start?
Its old, google how to clean (ICV) idle control valve.
Changed head gasket on your 1996 Toyota Tacoma now it wont start?
If the head gasket was just changed on the 1996 Toyota Tacoma and now the vehicle won't start it seems that it might be a problem with the computer. Check to make sure all plug ins are good for the electronic parts, then reset the computer.
