1993 Ford Ranger Wont Crank Over

Tiny
STEHARRIS
  • MEMBER
  • 1993 FORD RANGER
  • 4 CYL
  • 2WD
  • MANUAL
  • 183,000 MILES
Hi. For the past 2 months I have a bit of a mystery with my Ford Ranger. It will not crank over sometimes. I have replaced the following parts:
spark plugs
spark plug wires
battery cables
fuel pump
fuel filter
fuel pump relay
ignition control module

I also swapped out the ignition coils on a day that it wouldn't start, but it didn't solve the problem, so I took them back to the store.

The one thing that I have noticed is that sometimes I hear the fuel pump engage, and sometimes I don't.

Can anybody give me some direction to go in order to solve this problem?

Thanks,

Steve
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Saturday, August 14th, 2010 AT 11:15 PM

5 Replies

Tiny
MHPAUTOS
  • EXPERT
Hi there,

Thank you for the donation,

I just need to clarify one point first, when you say it wont crank over do you mean it will not turn over with the key on start or it will turn over on the key bit won't run?

Mark (mhpautos)
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Saturday, August 14th, 2010 AT 11:28 PM
Tiny
STEHARRIS
  • MEMBER
Sorry, I meant to say that it will crank, but it will not fire.

Thanks,

Steve
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Monday, August 16th, 2010 AT 1:30 AM
Tiny
MHPAUTOS
  • EXPERT
You will have to do a scan if not done already, you may have a faulty cam or crank sensor, do you have a good spark and is there injection pulse?

Mark (mhpautos)
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Monday, August 16th, 2010 AT 1:41 AM
Tiny
STEHARRIS
  • MEMBER
This model doesn't have a cam sensor. It could very well be the crank sensor, but she doesn't stall, doesn't shut off during acceleration and doesn't backfire. I've got good spark and good injection pulse.

I think that I have pinpointed down to some bad connection dealing with the fuel pump.
Originally, I bought a new relay for the fuel pump, but I was having the same starting problem, so I took the relay back to the store and replaced the pump, think that was the problem. The ranger ran fine for a week before the problem returned. When it happened, I replaced the coils, with no luck. I also pulled the ignition control module. Even though my old one tested bad, when I put in the new one, it didn't resolve the problem. The frustrating part is that it happens infrequently. The one time that I noticed a problem was when it was either hot outside, or the engine was hot.

Besides the relay and wire connections, is there anything else I can test? Could it be the ignition switch?

Thanks for your help.

Steve
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Tuesday, August 17th, 2010 AT 10:37 AM
Tiny
MHPAUTOS
  • EXPERT
With good spark & injection pulse, it will be a fuel problem, I will check the system out and post what I feel is the problem.

Mark (mhpautos)
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Tuesday, August 17th, 2010 AT 9:56 PM

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