Ford Taurus, 93, 94, 95 randomly stalls. New fuel pump, and ford service can't answer.?

Question

I have three ford Taurus 3.8s. At some point in time each has begun to randomly either failed to start or breifly misfire, or completely fail while driving. Have had two of them towed in and Ford says that they started right up and can't find problem. Decided last week to have Ford replace fuel pump, but on 600 mile trip, car cut out three times. Not due to lack of ignition. It is fuel. With car disabled and key on there is no fuel that comes out of needle valve at pressure test site. I figure that there is an electrical connector failure somewhere between battery, ignition switch and fuel pump. This morning Ford dealer says that they don't know. I have two other taurus fords with same problem.

Answer 1

I'm not sure, but do you know if maybe someone has something against you.  when you use words like randomly fail.  sounds like you have something stopping gas flow. I've heard bb's will do that and make it almost impossible for a mechanic to catch.

Answer 2

I have an '89 Taurus with the 3.8, and just yesterday discovered an electical current arcing across a gap on the alternator pully guard. Your years don't have the metal guard, but mine does, and like many others, it broke off at the front end of the car: if it hadn't done that, I wouldn't have known about my voltage leak. I've also had strange problems with this that I didn't have on my previous Taurus, an '89 with the 3.0. Problems such as: a random, unexplainable misfire, and I've replaced the voltage regulator twice in the first two years of owning the car. Additionally, it has seemed as if there is a misfire, or the transmission was slipping at freeway speeds when going up a slight incline. I now believe there is a voltage leak that is grounded through the engine, meaning that sometimes the engine is positively charged, and that would explain the misfire: A plug would have trouble grounding out if the block is positively charged. I'm going to investigate this more this weekend, but I believe it has something to do with the alternator, which is original, and the car currently has over 196K miles. Join the Yahoo group Taurus years '86-99, or Taurus wagons, to read what I find.

Answer 3

check the fuel pump relay and see if they are failing. it is a cheep fix if this is the cause.