Car ran rough when "cold" then ran fine after 3-5 minutes. All of a sudden, dash lights went on- car coasted to a stop. Car will not start, turns over, fuel pump is working, coil has been changed at least once. The car is apart- want to know how to check the coil and ignitor-
I was driving home from work and the car died. No reason. Car won't start called the tow truck and had it towed. Went to the car next morning and the darn thing starts. So I drove to work. Got to work everything working great. On the way home the car dies, second tow truck called. the next morning ended up at the mechanic's garage.
This is the exact same thing that happened to my Toyota Camry. I changed the computer, distributor, and other stuff.
This ended up being very costly. My mechanic discovered this after 4 hours of diagnosis and coming up empty handed.
I was pulling out of the driveway at my mechanics garage and the airbag light came on. This light was never on before, so I sent the car right back to him.
He found the air bag switch and changed it for under $100 bucks. That resolved the problem of the engine stalls and rough idle. Never had the problem again.
What engine do you have? You could still hear your fuel pump running but if you haven't checked the fuel pressure you may still have a problem with your fuel pump. You should be around 38 to 44 PSI when key is turned on not running. Did you verify you are getting spark or is there nothing to the plugs? Your ignition coil resistance should be (cold 9000-15,400 ohms) Primary should be .36-.55.
Your pickup coil resistance depending whether you are California or excluding California
California is
cold- pick up coil terminals G1 & G- Ohms 125-200
cold-Pick up coil terminals G2 & G- Ohms 125-200
cold-Pick up Coil terminals NE & G- Ohms 155-250
Ex. California models
cold-Pick up coil terminals G+ & G- Ohms 185-275
Cold-Pick up coil terminals NE+ & NE- Ohms 370-550 ohms
You also need to check air gap between PIck-up Coil & Signal rotor
California is .008-.020
Except California .008-.016
Here are some of the suggestions from Mitchell books:
ENGINE CRANKS BUT FAILS TO START:
*Ensure proper spark exists from ignition system
*Ensure Fuel system performs properly (fuel pump, Fuel filter, Fuel injectors, fuel pressure regulator).
*Check engine compression, valve clearance, valve timing and timing belt (if equipped)
Check airflow meter or MAP sensor and wiring
*Check idle air control valve (if equipped) and wiring.
*Check circuit opening relay and EFI main relay.
*Check STA signal at Engine Control Modual (ECM)
*Check Engine Control Modual (ECM) and wiring.
912 views
Usually answered in minutes!
×