Can't figure it out!

[Layne]

Think I can clean the heck out of it? I'm really not in a position to get a new one till tax time. $90 is ridiculous! The one for my citation was $20.

[Jim Rockford]

unplug the coolant temp sensor  next to the thermostat. see how that does.

[Layne]

That happened to my old s-10 twice. Made it run rich though- lots of black smoke, and I used to joke with my friends though town that it'd do 30 without touching the gas. I'll give that a shot though.

[VileZambonie]

You can try cleaning it and lubing the pintle. Unplugging the Coolant sensor will make it run rich and set a dtc.

[k5blazerfan]

tpo much computer crap an garbage what happened to the good old days when all ya needed was a carb distributor and gas to make em go thats why i got rid of my glorified computer on wheels...  i got 2 screws that replaces 900 on sensors

[Layne]

K5- I know where you're coming from, man. Tbi is about my limit lol. It's sposed to be in the 30's this week, and I'll get that egr off and clean it. I can't get motivated if it's cold out. lol. What do you think, though? Hose it down with C&C cleaner, then PB it? I was reading around and it says not to clean these as it can be bad for the diaphragm.

[Layne]

It's not very dirty in there. I've cleaned the ports and I'm currently soaking the valve in C&C cleaner. There was no solid wall of carbon blocking something as I thought there would be. This truck has AIR. Would that be a concern?

[Layne]

Is there a way to raise the idle in a tbi??? I soaked the egr in cleaner for a whole day and it never died! Not even once. My concern is that I have the same problem, only it's minute compared to earlier. You can hear it chug, but you can't feel it anymore and as far as I care that's fine. It's seems that at a stop in drive, it'll run at 400, then when I gas it, it hesitates. I think if I can bump the idle up to 8-900 like it should be I wouldn't have a problem anymore. Any suggestions, guys?

[kurtdirt1]

You obviously got a problem man. Raising the idle really isn't the way to deal with it

[VileZambonie]

Don't mess with the idle. The IAC controls the idle speed. Check the TPS. Do you have a volt meter? If not unplug the tps and drive it. See what it does. Just remember to clear the DTC

[Layne]

Sounds like I've got a violent cam in there... It was great till it got to closed loop (or open- forgot which one) then it'd drive, but as soon as I was off the gas, she was a shaking. Think we got it zeroed in on the tps?

[Layne]

Got a new tps on! It's getting better... Now she'll stay at 600 for a minute, then it's like it gets confused and it'll bounce between 300-1000 before it settles down at 500 rpm. Do I have to adjust the tps???

[VileZambonie]

Yes .55V with the throttle closed. I hate seeing you throwing parts at it.

[Layne]

I hate seeing you throwing parts at it.

That makes two of us. I've only got the MAP and the ECT ... All the input I've gotten has been a step for the better, and I appreciate it. It doesn't die anymore which is good. One a side note, I went out of town today, and we did the whole whiplash chugging again. If I hold steady, it chugs then I'll blip the throttle and steady again, we're fine.

[Layne]

Vile, is that Key On Engine Off when I test the TPS? Got a fresh code for ya... 44. Why is my O2 reading lean? I was out in the garage a minute ago and I ran the truck; it was fine till it warmed up. Then it stumbled maybe 4 or 5 times, then it idled fine. Just out of the blue- stumble, Vroom, stumble, Vroom, ect, ect. Then all is good.