my 99 cherokee wont idle when you start it it just dies right off but you can give it gas and it ribs up and every thing just wont idle i have put plugs plug wires dis cap rotery buttin fuel felter one new injecter tps sensor idle air sensor map sensor cleaned throtal body new battery, computer, i dont know what else to do?

 

Have you checked fuel pressure? I'm just guessing

 

not yet gota pick up a pressur tester lost mine, but took fuel rail loos and has alot of pressur, my jeep set for about 6 munths and had bad gas in it i cleaned the tank and changed felter, but was to late, have to take the fuel rail off and clean it and the injestors too..

 

hmm I would start looking to get codes, then check that TPS ,even the IAC again. Where did you get your sensors? are they oem? or cheap ones.

 

the sensors came from advance auto parts, i can change them out with no problem. i then they was around 80$ apeace

 

Hmmm I would look into maybe cheap sensors and try oem ones. Hit up http://www.rockauto.com/catalog/catalog.php and http://www.factorymopar.com/ Remember I'm just guessing. That is just where I would start to look.

 

Before you start spending more money and throwing more parts at it, Do like Dumajones said. Have it check for any code and check the fuel pressure with a mechanical pressure gauge. Just because you have some pressure in the fuel rail doesn't mean you have the right pressure needed for it to run correctly. Your year should have 49psi +or- 5psi. Once you get those checked out it will be a lot easier to know what direction to go. Let us know what you get.

 

have the battery checked and check your cable connections... a bad battery or connection/ground can cause the same issue...

 

i guess I don't either but thats because when I saw your post with no punctuation my eyes just sorta skimmed right over the whole mess I think you will agree that while it is easier to type this way it sure is hell for the reader to try to decipher right

 

He used two commas. What more do you want...

 

Yeah, you're right. My bad.