I'm having problems with my car starting in the cold. I fount the problem the sending unit was sending the wrong info to the computer. I replaced the part. Now I can't get the fan to come on and the g

Replace the water temperature sending unit/sensor in coolant system and you'll have no more problem starting on cold mornings. When you first turn on the switch, the computer automatically get's messages from every sensor in the system. The temp sensor is not sending the signal for the computer to place the engine into "cold start" mode, advancing the idle a bit and placing a bit more fuel into the engine. Computers are not smart at all. The computer will only do what it's told to do by a sensor. If an important one does not send a signal, the computer will do nothing on that part of the system. That's the basics of how it works and why yours doesn't. Good day.

Replace the temp sending unit/sensor and you'll have no more starting problem when cold. The computer just doesn't know what to do when the sensor don't send the message to go to cold start mode.

Think about how the vehicle is acting. Starts fine when cold, hard to start when warm. In these computer operated systems, the computer runs everything. Starts fine when cold: the computer has the engine in cold start mode putting more fuel in till it warms up. Temperature sending unit in the manifold sends a message to the computer telling it to stop the cold start mode and it stops dumping excess fuel into the cylinders and it runs fine. IF, mind you, IF the temperature sending unit is faulty, it's not telling the computer to stop the cold start mode and is flooding the engine with fuel cause it's sill in cold start mode. This is my take away on your situation and the temp sending unit is something to check to be sure it's functional. Check it out. I hope this WAS the answer to your problem my friend. It's typical. Luck to'ya Bro.

A much better thought is that the temperature sending unit is at fault and not telling the computer to go into cold start mode to put more fuel into the engine for cold start. Kin of like a choke on a carbureted engine. Have the temperature sending unit replaced and you can get started no problem.

May just be a bad temperature sending unit. Once warmed up, it's supposed to go off cold start, which puts more fuel to the engine. If sending unit is not telling the computer the engine is warm, it will still be putting more fuel into the engine and flooding it, making it hard to start. Check/replace said sending unit and you're good.

Replace your cars battery, purchase one with high colk cranking amperage.

Friend, you have a faulty temperature sending unit. Change THAT and you'll have this problem no longer. The temp sending unit, when cold, will put the engine, by the computer, into cold start mode, the engine starts getting a bit more fuel until is warmed up, then the sending unit tells the computer it's warmed up and shuts down the cold start mode. Only makes sense, Right?

check for a bad fuel pump relay. it maybe geting hot and shutting down. it may be a bad coolant tempurature sensor also, that sends info to ecm.The engine will think it was still cold, even though it was not, causing all kinds of things to run draggy. thats why it runs ok when its cold. it sends wrong info to computer. thinking its cold, when in reality its warm. have a good day !!

Have your temperature sending unit tested for proper activation. Computer will tell the engine to go into cold start mode when cold. If the temp sending unit is faulty, it will not come out of cold start mode and is still dumping excess fuel into the engine causing it to flood with fuel and causing an overly rich condition and it just won't run right like that.