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Ignition problem. Cranking, no start, little spark

7.2K views 12 replies 5 participants last post by  whynotthinkwhynot  
#1 ·
Hello,

So I am having problems with my Ford Focus not starting. I was driving home the other day and the car shut off mid turn and wouldn't start up again. Got it towed back to my house.

Vehicle Information:
2002 Ford Focus SE
2.0L DOCH 16V Zetec Engine
Automatic Transaxle

Alright, so when I try to start it, it cranks but will not start. The timing belt looks fine, the fuel pump turns on ( i even discounted the fuel line at the fuel rail and got fuel out when trying to start, so I don't believe it has anything to with the fuel system).

The problem seems to be spark. The 1st cylinder gets some spark, but all the others do not. I got the same results when I tested for spark from the ignition coil. I swapped the coil out with a new one, but still had the same problem, so I put the old one back in. Now, there is a wire disconnected from the connection to the ignition coil (the right most one). My dad and I tried bridging it and it still wont start, so Im not entirely sure if that is the problem. I might try getting a new one and replacing the entire connector, but I'm still not sure if that is the problem.

I've been doing a lot of research trying to figure out what might be wrong, but I'm very limited on what I can do. I have very few tools (essentially only a very basic screwdriver set) because I am at college right now and away from home. I've read that it could have something to do with the crankshaft sensor or the ignition switch. I don't know how to test that and I don't have the right size bit to get access to the ignition switch.

So my question is, if anyone has any suggestions on what might be the problem and how to go about testing for that?
 
#2 ·
That connector to the coil and the wiring close to it is a common issue. Replacement connectors with wires attached (pigtail) are avail. for repair.

Without good connection at a single side wire (wire or connector) you loose spark on TWO cylinders, if the central wire looses connection you loose all spark (power to the coil).

You need to keep the wires straight when doing a replacement so it works properly, no mixing them up. Individual connections are possible as an emergency measure, again they have to be made the same way as they are now.
 
#3 ·
Yep, new pigtail connector. I also suggest that you trace the wiring to the coil back as far as you can in that wiring loom. Look for damage to the loom and wires inside. Have some zip ties handy. There are 2 small tubes that come up from the exhaust manifold and go to the EGR's DPFE, you'll have metal tube connected to a strange flexible thermoplastic tube that connects to the a device with wires going to it (DPFE). The metal tubes can come into contact with the wire loom on those cars, and it causes damage where it can't easily be seen from above. Inspect, and zip tie that wire loom so that it won't contact those tubes after you make your repair.
 
#8 ·
You can easily get 'weak spark' based on how you test for it, seen it a hundred times...........just sayin'. It still could be fine. There is no book out there with pics and the judgement is highly suspect any time it is done. I don't even trust myself and been checking that for some 45 years. Weak spark on 2,3, and 4 is impossible, it would be all 4 or only 2.

Was the car turning to THE RIGHT when the issue happened? Even more if the fuel level was low, say 1/4 tank or so. Your fuel pressure check and logic are worthless.

The timing belts almost always look fine, these strip to jump teeth far more than break belt. You won't see that unless you check every single inch and maybe even not then.

Is the battery known hot and FULLY CHARGED right now? Simply saying it's charged is worthless as well.
 
#10 ·
If check engine light is lit during cranking the crank sensor is working............And if bad there will be ZERO spark. PCM shuts spark grounding off since it can't time properly. Wrong timed spark damages parts.
 
#13 ·
The check engine light is on when cranking, but it has been on for months already.
Have you had the codes read? If so, what's the number for the code? If you haven't had it read, see if you can rent a code reader from your parts store, or borrow one- whatever it takes. Record the DTC code that pops up, and let us know what it is.