I have a 97 chev truck 1/2 ton. When driving it stalls. Some days it is fine and other days I have to start it seven times for a 15 min drive. Also sometime when driving the engine cuts out and comes back on.
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I just recently have been fighting the same problem with the same make/model/year vehicle. For myself, I would drive off and on through the day and it would run fine. Then suddenly after a start it would run rough and die. I would have to wait 20 to 60 mins before it would start again. I had it checked and fuel pump was only putting out around 19 psi. It should be around 41 psi. Had fuel pump replaced and no more problems. Furthermore, now it runs so much better. It's funny how over time I didn't notice how the performance was slowly degrading. Unfortunaley fuel pumps for this car run around $300.
Sounds like a loose connection, Clean the fuse contacts. Sometimes lubricant and dirt gets on the contacts within the switch itself and this will interfere with power supply. Have you checked the wiper relay corrosion and wear on the relay contacts impair electrical connection. Brighten up contacts with fine sand paper and if the relay contacts are suspect, remove the cover and draw folded sand paper between the contacts until clean.