Engine Problems

[87sierra]

Thats the wire. When you disconnected the battery, did youlet it get to operating temp? If not, it will run fine on factory settings from the calpack, until it gets into closed loop mode, where it uses the readings from the sensors.

no but once up to opperating temp should i disconect the bat. while truck is running or off at opperating temp
also the wire had what looked like a fusible link

 

[Jims86]

no but once up to opperating temp should i disconect the bat. while truck is running or off at opperating temp
also the wire had what looked like a fusible link

That is the plug that you disconnect when you set the timing...like unplugging the vac line on old school.
What you did when you disconnected your battery, is clear the computer. Now it will re learn again. But, when you start it back up, it runs from factory pre sets, then goes into closed loop once it warms up. on open loop, it ignores the o2 sensor.
No need to disconnect the battery again.

Drive it around for about a 1/2 hour, and see if she acts up again.
If it cuts out, check for spark immidiately, that will narrow the problem down to ignition or fuel.

 

[87sierra]

Alright i will do that tomorrow thanks jim and guys ill let ya now how things go

 

[87sierra]

okay just ran the truck and drove it this morning it ran real smooth at idle put once driving it studered and choked so i pulled the air cleaner off and looked at the injectors and they were fine i checked the wires and moved them around then placed everthing back on and let it sit for 11/2 hours and drove it back home and the truck ran fine

 

[Jims86]

okay just ran the truck and drove it this morning it ran real smooth at idle put once driving it studered and choked so i pulled the air cleaner off and looked at the injectors and they were fine i checked the wires and moved them around then placed everthing back on and let it sit for 11/2 hours and drove it back home and the truck ran fine

Can you post a pic of the top of your engine close up, no air cleaner?

 

[87sierra]

here are some pics its not the orginal #s matching but its same size engine

 

[89Suburban]

Is your charcoal canister on the pass side?

 

[crazy4offroad]

Does it run fine when it is running normally? I.E. not sputtering? Plug wiring at the cap looks off to me for some reason in the 3rd pic. Unless that's a crab cap.

 

[Jims86]

Looks prettybgood to me. Just one thing...make sure the Green and white injector wires are going to the drivers side injector...I see you had to splice in new plugs...I had to do the same thing.

 

[87sierra]

Is your charcoal canister on the pass side?

no the charcoal canister is on the driver side

 

[87sierra]

Does it run fine when it is running normally? I.E. not sputtering? Plug wiring at the cap looks off to me for some reason in the 3rd pic. Unless that's a crab cap.

ya runs fine and the wiring is right unless u go by what chilton says and every wire should be moved back one which wont work for this truck

 

[89Suburban]

no the charcoal canister is on the driver side

Where is that clear vacuum line on the front of the TBI running too?

 

[87sierra]

Looks prettybgood to me. Just one thing...make sure the Green and white injector wires are going to the drivers side injector...I see you had to splice in new plugs...I had to do the same thing.

ya the green and white wires go to the driver side injector hope fully she is fixed for good

Thanks guys for all your help

 

[87sierra]

Where is that clear vacuum line on the front of the TBI running too?

it runns to the air pump which is worthless

 

[Jims86]

Does it run fine when it is running normally? I.E. not sputtering? Plug wiring at the cap looks off to me for some reason in the 3rd pic. Unless that's a crab cap.

You can run the wires across the cap on a TBI distributor, no coils in the way. I dont like to do it, because there is a chance that spark could leak from one of the other posts, and cause problems...I prefer out and around.

Where is that clear vacuum line on the front of the TBI running too?

Thats going to the vac port on his AIR diverter valve...Thats the valve I need.