If it ain't one thing...its another!!!

[extremetrek]

Hello again,

Okay, so I just completed my intake swap as you all know. I don't know if this is related or not but a diagnosis would be appreciated. Since about yesterday the car will start up just fine and then when I shift to drive it'll die. Shift to neutral, start her up, shift to drive, bam dead. This'll happen 3-4 times and then it'll stay going. There is also a smell almost of burning, or maybe rich fuel??? In the drivers seat heat can be felt coming from the floor somewhere, it gets rather warm sitting there. I have pulled the engine codes and I get something for the thermactor air system or something which I understand to be the emissions system at start up...so is this the problem or something else? I have also thought maybe it is a timing issue and maybe the heat is just my imagination? Any help is appreciated.

 

[94-302-vert]

I am going to guess that it is fuel or spark related. Check your connections to both your plugs / dizzy and your fuel injectors. check to see that all are firing...

If the headers aren't getting red hot (lean condition) I would say that you are running rich so you may have a cylinder that is not firing or is getting too much fuel...

Also once you have it running how does it run?

 

[SQUEEZE&STROKE]

Could Possible Be A Vacuum Leak. Check All The Hoses (pcv, Brake Booster, Vacuum Tree) As Well As The Gaskets...how Well Did It Seal Or Do You Think It Sealed?

 

[extremetrek]

Once its running it runs like a champ, its only at start up, and really only at semi cold start up. I thought it sealed perfectly and that we had made all connections but I am going to check them today and retorque the lower bolts just to be sure.

 

[Swarzkopf]

In the drivers seat heat can be felt coming from the floor somewhere, it gets rather warm sitting there. I have pulled the engine codes and I get something for the thermactor air system or something which I understand to be the emissions system at start up...so is this the problem or something else?

Sounds to me like your air pump (thermactor blah blah system or whatever it's technically called) is malfunctioning. This is needed to feed air to your catalytic converters at start up, in order to allow them to dissapate the carbon, unburnt gas, and moisture which builds there.

If the air pump malfunctions, the cats WILL build up with deposits and adversely effect performance, and sometimes can become quite hot in the process (possibly the reason for the heat your feeling from under the car).

Check the air pump and see if it's seized up or working, then make sure the metal tube from it is connected.

All this is assuming you have catalytic converters.

Good luck.