Engine light is on, engine will stop middle of driving down the road. It will restart, but cranks over longer than normal. Has new cat convertor, 02 sensor and fuel pressure regulator that are about 3 months old

get the OBD codes read as will point to the sensor/switch/circuit causing the issue, also use a fuel addative get one that covers the cat convertor as well as the valves , injectors etc ,take for a longish drive at a highish speed to get the engine at a good operating temp

if it shuts off while driving down the road. and restarts after 10 minutes, its usually a bad crank sensor that does this. it messes up timing and shuts off fuel supply.

it is poss not related the normal problem with that engine and the symptom you say. is caused by the ignition module inside the distributor

after the restart does it do the same or does it run totally normally?...also you did'nt mention spark plugs and wires...did you change those?

i would first check the crank position sensor,i have seen this many times before.

cat might be burnt it might be a bad sensor or a broken wire in the o2 sensor

I had a similar problem, had it diagnoses and found out it was actually the thermostat not allowing the engine to reach normal operating temperature thus signaling the Cat to throw an emission code. It sounds far fetched but the diagnosis and fix was correct. I had the thermostat changes, fuel injection service, new spark plugs installed all for $350 and I have never seen that "Check Engine Light" again. Plus, my car drives like new with improved gas mileage.

Well did you say u replaced the engine? Well if thats the case you may have a clogged cat CONVERTOR. to start out, first we need to remove the bolts from the exhaust manafold to the down pipe.try to prop the pipe slightly away (about an inch) from the manafold.(WE ARE REMOVING THE CONVERTOR FROM THE ENGINE IN A SENSE) start the car (it will be loud,and take a short test drive.If the car no longer chuggs, replace the cat CONVERTOR.good luck

You'll have to find out what's causing the check engine light. Take it to Autozone, have it scanned for free then get back and let me know what they say.

Scan the computer for fault codes. Check that fuel filter is not obstructed. (if old, just change it) Most common problem is the crank sensor but do not just start swapping parts: it can cost a ton of $ and not cure anything!!