in need of some help before i go mad

[kimonagro]

i have an 87 s-10 when i leave it idling or stop at a set of lights it stalls on me to date i have changed the plugs ,leads,rotor,cap,timing,throtle body gasket ,IAC,TPS, looked for vacuum leaks and so far no success it id driving me around the twist can anyone please give me so other ideas.
thanks in advance

[mayville1]

Can you adjust the idling on it??

[kimonagro]

i dont think u can there is no screw for adjustment

[OverBoardProject]

Probably too easy, but hows the fuel filter. And the fuel pressure

[kimonagro]

forgot to mention i changed the fuel pump and filter to how do you check the fuel pump pressure shouldnt it be correct cause it is an electric pump?????

[OverBoardProject]

Well a new pump should have the right pressure, but they use the same pump for V8 powered chevy's too.
This is why they have to regulate the fuel through a fuel regulator, which could also be worn out.

[kimonagro]

ok dumb question where is the regulator?

[Bads Crew]

Originally Posted by kimonagro

i dont think u can there is no screw for adjustment

My 87 had a idle adjustment screw. Look right in from the front where the cable is. Mine had a hole in the throtle body with an adjustment screw. I had a problem once inside my distribitor. Under the rotor there is a star plate with a magnet pick up. My truck wouldn't start. I changed everything. I saw that thet star plate had some light rust on it. I took it out and hit it on my wire wheel to clean it up and put it back in. The truck started rite up. I'm not saying that is your problem but its worth a try.

[kimonagro]

Originally Posted by OverBoardProject

Well a new pump should have the right pressure, but they use the same pump for V8 powered chevy's too.
This is why they have to regulate the fuel through a fuel regulator, which could also be worn out.

pulled the TBI off today and cleaned it up put new gaskets on it did the fuel pressure regulator and still no go.WTF is happpening.

[TRACYCULBERSON]

Originally Posted by OverBoardProject

Probably too easy, but hows the fuel filter. And the fuel pressure

Have you checked the throttle poisition sensor or maybe the map or o2 sensor

[kimonagro]

Originally Posted by TRACYCULBERSON

Have you checked the throttle poisition sensor or maybe the map or o2 sensor

i put a new tps in i guess all i got left is an oxygen sensor and the map to anyone know how to test either????

[TRACYCULBERSON]

no i sure dont no that one .But when you do solve the problem let me know i very interested in the cause of it