[T Y L E R]

Ok payday is Friday, so I'm going in tomorrow to make an appt. at the Dealer. The phantom stall had dissappeared so I thought. In the last 24 hrs though it has stalled 3 times while in park, and 4 times while cruising down the road slowly, usually shortly after taking off from a light etc.

Latest behaviour:

1 ) Very rough idle upon starting (starts up easily though first time, every time)

2 ) Idles normally for first 30 seconds of startup, and then the needle dips dramatically a few times before it just stalls.

3 ) When this happens if I press the gas gently it will more or less smoothen out the idle.

4 ) Once it decides to idle normally and I take off slowly thru the underground garage and into the street, its as though it has a very subtle surge going because I can get out of the garage , into the street and down to the light easily without ever hitting the gas pedal!

5 ) Once I am off though and the truck has settled down (5 mins or less) it seems to run like a top. Only problems seem to be upon starting from cold.

A few perhaps unrelated details I'll mention:

1 ) My accelerator linkage (engine side) seems to have some slack in it. As it lays at rest it has a slight sag downwards. If I lift up on the wire it will easily travel a 1/4" before actually affecting the throttle.

2 ) The purge line from the emissions canistor is pretty loose at the engine. By moving the line I can easily twist the connection at the engine. In fact , with the engine off, I was able to just pull the line right off the engine without any problem.

So only a problem on recent cold starts ... and then followed by a slight consistent surge for a few blocks.


TY

[Beowulf]

T Y L E R,

I pulled that purge line from the canister, drove it for a few minutes, and it doen't create any problems. I don't think there is very much vacuum on that hose; certainly not enough to to create the problems you are having.

I suppose you've already checked the large hose that goes from the intake to the air filter canister?

-B-

[T Y L E R]

I'll take a closer look tomorrow Beo.


The really odd thing is that after driving to the Lake for a few hrs and idling as I surfed etc I headed home and when I went to merge onto an expressway and twice when I hammered it the 80 literally flew! Obviously I live with this 80 day in and day out and I can say that it hasn't jumped like that for several years. So did I inadvertantly do something today at the lake when I lifted the hood and started tuggin on tubes and wires .. looking for a culprit?

Say it ain't so ...



TY

[tucker74]

Be sure and check for a cracked intake hose - sucking in extra air post air meter causes the symptoms you described. Also check the wiring harness for any signs of melting - particularly where it goes down through the intake plenum ...

Good luck!

Tucker

[aamiggia]

This may not be too helpfull but, my previous vehicle had simillar symptoms and it ended up being the ECU. It was the ignition control that was flakey. Nothing I could do short of replacing the ECU.

Have you tried to reset the computer?

[roncruiser]

Check the power to the ignition switch. There could be some type of intermittant open happening in a connection. It happened to me. The fusable links could be bad or the ignition wiring harness maybe mangeled because of PO.

[semlin]

tyler next time it happens check and see if your temp gauge does anything. Otherwise I agree with the comments above.

[cruiserman]

Both your listed points are normal.

I would guess the intake hose has a bad crack.

[ultimauk]

Have to tried to clean your TB?

[T Y L E R]

The oil was down a bit so I headed over for some 0W40 M1. When I had the hood up I checked things over a bit closer. Dang if the intake hose wasn't LOOSE! The distal end was askew and the top portion was angled back about 1/2". Both securing screws were also poorly tightened. I took care of it, and am hoping that will remedy the stall gremlin.


Thanks for the suggestions.