Well, my experience tells me that it is exactly what your computer is
telling you. It is the crankshaft position sensor (CPS) going bad or
your timing is really really out, but if it were the latter you would
most likely have bent your valves by now.

Unfortunately, my experience is with a '93SE and not a '95 so there
isn't a whole lot that I can tell you about that part. The engines in
the '93 and '95 are completely different ... I think; it's hard to
remember that far back. Now, if they happen to share a similar CPS then
it is not a copper winding magnetic sort of affair. In the '93 it was
the ever popular photo light sensor. Basically, the unit ran off the
camshaft in the same position as a distributor cap would be found and
sort of looked like one. It was on the passenger side head in the front
of my car with a bundle of wires coming out of it. Inside the cap was a
metal card that would spin inside a reader element as the engine
turned. In my car it went bad because it had been dropped and dented at
the factory and rubbed against the light reader until it ate the reader
unit.

The symptoms were rough idle, and notchy acceleration when the car was
floored. As it got worse it would cough out both at idle and on the
highway. It got so bad in my car before I replaced the unit that the
car would only run on the highway for 50 seconds or so before the
engine needed to be restarted.

It was bloody easy to replace. Simply unplugged it, and removed the
bolt that held it to the engine then remove and replace. The notch in
the camshaft that it fit into was unideirectional [eg it would only
accept the key one way and not the other automatically locating the
card] then I put a timing light on it and timed the engine. Easy as
pie. However that was for a '93SE, and I make absolutely no claims that
the same thing would be true for a '95, but the symptoms are the same.
All the best - H

Replace the temp sensor. It's a cheap part and easy diy job.When the
temp sensor goes bad;

1. The sensor fools the ECU into thinking the engine is still cold so
it keeps running rich.
2. Because you keep running rich you lose power and gas mileage goes
down.

You may be running so rich that the car may be stalling out.

After you've replaced the coolant sensor, it will take about 3 tankfuls
for the ECU to relearn its fuel maps and adjust itself accordingly. I
would wait untill then and see if the crankshaft sensor warning goes
away as well. If not, replace/fix that as well.

One last note, there are usually 2 temp sensors, 1 for the gage on your
instrument panel, and the engine one. Make sure to replace the engine
one of course. It is usually located somewhere along the top radiator
hose, where it connects to the engine.

CD

My 90 GXE was doing that a while back. Turns out, it was the Engine Cont
relay.  I also thought the crank position sensor was bad although I never
check for codes on the ECU.

I don't know if your 95 has an Engine Cont relay, but the 3rd gens have
them.

The test I used for the relay: take off the relay box cover and tap the
Engine Cont relay while the engine is idling. If the motor skips a beat or
just flat out quits, there is your problem.

Chris
90 & 94 GXE's
06 SE