Starting up problem

[Calvin327]

For the last couple of days I've noticed that in the morning when I start my car I need to give it a little gas in order for it to no die, but this has never happened before. Usually when I turn the key the car just comes on without me needing to do anything. What could be the problem.

Thanks,
Calvin

[JerryR]

Possibly a sluggigh Idle Speed Air Control Valve
It's been awhile, so here is what I remember.
To try and clean it, with eng off, Ign sw ON, remove the intake air hose from the TB, you will see a square(rect) hole in front of the throttle plate, spray TB cleaning solvent in there(NOT CARB CLEANER), towards the bottom front of the TB you will see an electrical connector. work that connector in and out , you should hear the valve operate, repeat a few times than put the intake hose back and see what happens.
hope this helps
JerryR

[zoni]

throw some fuel injector cleaner in your next tank of gas... cant hurt.

[Calvin327]

You know what guys. I did all that. I just recently replaced my ISC, and yea Zoni I just pured some fuel injection cleaner into my car like last week. So I dunno what the hell is going on. But I'll try clean the intake and throttle body and see what happens.

Forgot to add that its a 94 5sfe.

Thanks,
Calvin

[zoni]

hmmm i dunno...

[2wickedtoyz]

it might be your cold start injector

[Calvin327]

Originally posted by 2wickedtoyz
it might be your cold start injector

Where is that located? How much do you think it would cost to buy and install it?

Thanks again guys,
Calvin

[88 LE]

^ 5S-FE's don't have a cold start injector.

You could have a faulty ECT (engine coolant temp) sensor or the ISC is clogged.

I would clean the throttle body + ISC and see what happens.

[2wickedtoyz]

the book says it doesn't come with one but there are so many typos in these books it's not even funny.
look on the engine and see if there is somewhere else the fuel would go on the manifold somewhere

[Calvin327]

Originally posted by 88 LE
^ 5S-FE's don't have a cold start injector.

You could have a faulty ECT (engine coolant temp) sensor or the ISC is clogged.

I would clean the throttle body + ISC and see what happens.

What kind of cleaner would you recommend? And do I just spray it into the intake while the car is off or do I need to be on?

[88 LE]

^ Carb cleaner or throttle body cleaner. Make sure the can says its safe for sensors.


Instructions from yotarepair.com:

Now if you want to try to clean it yourself you can do this. You will need to purchase some carb cleaner from a parts store or some place like WalMart or Kmart. Then you have to have someone help you start the engine and kind of keep it running if needed. The process requires that you take the large black tube off the throttle body and unplug the Idle Air Control Motor. Caution, if you have no idea of what I just described do not proceed without having someone there to assist you. You then take the carb spray and spray a little into the small square hole you will find in the throttle body opening. Have your helper start the engine while you hold the connector for the IAC to the valve so that it makes contact. When the engine is running spray into the square hole and at the same time make and break the contact with the IAC connector so that the cleaner gets into the working parts of the IAC. You know when its clean when you hear a louder rushing noise from the throttle body when the connector is making the IAC work or open. Then all you have to do is clean the area and inside of the throttle body with a tooth brush (old one is preferred) and connect everything. Your check engine light will be on so when you shut the engine off open the fuse panel under the hood and remove the EFI fuse for about 30 sec. and it should clear. If it does not then turn the key to the on position and try it that way.

[Calvin327]

Well I just recently replaced the ISC valve, and the ECT sensor not that long ago. Maybe at most 4-5 months ago. I will try cleaning the throttle body and the ISC valve and let you guys know the results. Hopefully it is as simple and easy fix as it sounds, if not damn.

Thanks again,
Calvin

[I4 to V6 Swap]

Try changing the fuel pump. I had the same symptoms and then my pump finally died. It just shit the car off when I was on the freeway. I was lucky enough to roll off the freeway off an exit and sit on the shoulder of the exit in plain view. I put the new fuel pump in the next day and everything was fine, and the car actually ran better.