Started on the Interior

[Ridgerunner]

So unplugged the IAC and ran smoothly is good?

 

[smokey]

I did unplug it and nothing changed

Of yo have a vacuum leak it will not really change. Allthe IAC does is create Controlled vacuum leak.

 

[Ridgerunner]

Of yo have a vacuum leak it will not really change. Allthe IAC does is create Controlled vacuum leak.

We are going to go through all the vacuum lines tomorrow. I have the feeling it would be easier to go ahead and replace them all. I wonder how many are the same size line.

 

[smokey]

I think the majority of then are ask the same size.

 

[Ridgerunner]

I will have to see how much a roll of line will be. Thanks Randy and Ryan

 

[smokey]

Check for vacuum leaks around the throttle body and intake. I have had them leak with new gaskets before.

 

[Ridgerunner]

Check for vacuum leaks around the throttle body and intake. I have had them leak with new gaskets before.

We did that earlier with some dawn water in s spray bottle. I wonder if we did that wrong too.

 

[smokey]

Water works ok. I use a unlit propane troch with a piece of vacuum line on the end. That way you can direct the propane right at the joints. It eill incrwase RPMs if a leak is there.

 

[Ridgerunner]

Water works ok. I use a unlit propane troch with a piece of vacuum line on the end. That way you can direct the propane right at the joints. It eill incrwase RPMs if a leak is there.

That is a lot easier. Will do that instead of the water. I wanted to rep you and ryan but the rep gods are mad at me.

 

[smokey]

I was in Elmer typing mode. Fudd that is.

 

[flareside_thunder]

I always do copper coat spray on paper intake gaskets. Just a thought. Make sure your map sensor is plugged into vacuum also.

 

[Ridgerunner]

I always do copper coat spray on paper intake gaskets. Just a thought. Make sure your map sensor is plugged into vacuum also.

No we didn't use anything on the gaskets.

 

[Ridgerunner]

Well my truck is running properly turns out the TPS was pulling high voltage 1.205, readjusted it down to .97

 

[fatherdoug]

Well my truck is running properly turns out the TPS was pulling high voltage 1.205, readjusted it down to .97

Cliff, was the adjustment screw maxed out at 0.97, or was there more left?

 

[Ridgerunner]

Cliff, was the adjustment screw maxed out at 0.97, or was there more left?

Actually we couldn't get it to .97 the closest we got was 1.02. so we drilled the 2 screws a little bigger and got a lot more adjustment. I had no vacuum leaks

 

[fatherdoug]

Actually we couldn't get it to .97 the closest we got was 1.02. so we drilled the 2 screws a little bigger and got a lot more adjustment. I had no vacuum leaks

That was my experience also on the '89 F-250.

 

[Ridgerunner]

That was my experience also on the '89 F-250.

Glad to see I was not the only one to do this. Monday I will drop some gas in since I am almost empty and take it for a good test drive.

 

[Fellro]

I know when my TPS went bad, I plugged in the new one to check its behavior, and it fixed the high idle right away. I was able to make it pick up rpm by just moving the tps, nothing else. When it went bad, I was out in the cold and dark putting up snow fence, and it would waver from a decent idle to a high revv all by itself, nothing moving or changing.

 

[Ridgerunner]

Did we do this wrong Roger? Because it idles great now.

 

[Fellro]

No, not at all, the factory doesn't want us to mess with that, yet as things wear, you have to do what you have to do. My tps was crap, the readings were wacky. It likely was the factory original, and I replaced it a couple years ago now. I don't think there was much for adjustment on the tps itself, just the idle screw. I didn't monkey with mine, just threw the new one on. The difference was night and day anyway, I could unplug the old one and plug in the new one and the idle would straighten up right away.