misfire when cold

[darkgoatracer]

I have a 98 savana with a 5.0. It stumbles pretty bad when its cold, sometimes it shuts off.when it warms up its fine. In the past year i have replaced ths spider injection.fuel pump.tune up.intake manifold gasket. Maf. O2 s. There is no codes and no ses light. Any ideas?

 

[dirtclod]

The first things to change are spark plugs, ignition wires, distributor cap and rotor. It just cost me $100 (American). Fixed my problem.

 

[darkgoatracer]

I drove it around today, and it was stumbling after it warmed up. I pulled the plugs after driving. They all looked fine. Plugs wires cap and rotor and csm sensor were replaced less than 10k miles ago. I also visually inspected cap and rotor and did continuity check on wires. The problem is intermittent which is whats throwing me off

 

[dirtclod]

It's your call. My Jimmy had the same symptoms. My wires, cap, etc... had less than 12,000. My smog tech told me to change them out before I replace anything else. He was right. I don't trust ohm testing the wires. Years ago I had a bad wire that checked out ok when ohm tested.