Adjusting Timing

[The Fox]

Okay, timing is set right still, it was off because of the spout connector. It was not at 10* at idle until I pulled the connector.

As for the IAC, replaced the gasket and used a gasket sealer, still doing the same thing. I filled up the tank this morning and the truck feels like it has less power, it is harder to take off without it stalling. Any ideas about it. This is really getting to me, it is hard to shift gears when it surging at the shift RPM. I am going to replace the line the line that is on the intake to the throttle body tomorrow since the stock one is hard and the like. Does anyone have the link to pulling codes without a scanner, and to the what the codes are. I used to have them, but I lost them and can't remember where they are.
Nick

 

[Tedybear]

Information for codes, and pulling the codes is in the tech library.

Paperclip works wonders...and if you do not have a functioning dash "CEL" light? You'll need a decent multimeter..analog works quite well for this purpose. Or you can go all out and get the high speed racing EEC-4 code puller from a parts store. (all it does? Is the paperclip part for you---and gives you an LED to work with for flashes)

S-

 

[The Fox]

Okay, I found it. Damned me not looking where it was.
Nick

 

[The Fox]

So I took the truck to my mechanic buddy and we are both stumped on this one. He is thinking it could be the coolant temp sensor for the computer, which would explain why I am getting worse gas mileage. His scanner kept having batteries die in it, or we would have pulled codes. Monday morning we are going to pull any and all codes.
We checked the fuel pressure, it was 32psi at idle, and 42psi if took the vacuum line off the FPR. He took if for a test drive and the tack was jumping more then the truck was, so it could be something to do with the ignition system. The truck also seems to have a high idle that takes a little while to go down, also another trait of the computer not going into open loop.
Anyone have anymore ideas as to what it could be.
Nick

 

[IMenriched]

do a compression check
check those grounds and for vacuum leaks...in the Tech Library there is also a nice info on vacuum gage readings and what they tell you

 

[The Fox]

Okay, pulled codes and it was running lean. Check the O2 sensor, one wire was broken and the other two where frayed. Replaced that, not running lean anymore but still doing the same thing. I will let you all take a guess as to what it is.


























































































































It was the TFI not plugged in all the way.
Thanks for the help. I knew it had to be in the ignition system, but where was the guess.
Nick

 

[JTH1972]

OK, stupid question time. What exactly is the TFI? I've seen it used several times on here and I'm not familiar with the acronym.

 

[The Fox]

http://therangerstation.com/tech_library/TFI_Diagnostic.html

Not a stupid question, I had to google it once too.
Nick

 

[JTH1972]

Ah, now I know. thanks.