hello
have a ?
I have a 1990 Toyota pickup 22re
pickup runs perfect starts perfect but when the truck is been sitting for 3 to 4 hours it has a hard time starting the starter cranks as normal but the pickup is not catching it takes about 30 seconds for it to start, normally it starts in 2 to 3 seconds But if the pickup Sits for more than four hours it starts normal
thanks again please let me know

 

Start with the easy stuff. I assume you have no codes (no CEL). Check base timing.

Check CSI (check for stuck-open). Remove the CSI and place in suitable container (don't disconnect fuel line; you MUST replace the crush washers if you do that). Start fuel pump with diag connector. (You should get no CSI flow.) Crank starter --- if cold you should get immediate spray. If warm you should get nothing.

Check ECT (Engine Coolant Temperature) sensor. http://web.archive.org/web/201311071...40engineco.pdf

 

Kind of think itt has something to do with the temperature of the engine what does the coolant temp sensor do ?

 

My, that's a tough one. Could it sense the temperature of the coolant?

Everything the ECM does (ignition timing, injector open time, fuel trim, ...) depends on temperature. If the ECM thinks the engine is dead cold when it's really hot, you're going to have a tough time starting it.