01 COBRA STARTING PROBLEM

01cObRa01

New Member

May 12, 2011

10

0

1

las vegas

May 12, 2011

#1

• May 12, 2011

• #1

Having a problem with my 01 cobra recently changed out the fuel pump for a bbk 255mp because thought that was the starting problem. but not it, every time i turn the key and give it gas it lags if there was a fuel problem then after a while it turns on not sure what it could be so need help!!!!!!!!!!!!!

 

AznStanger3v

Active Member

Aug 11, 2003

2,026

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47

Northern VA

May 15, 2011

#2

• May 15, 2011

• #2

Check your plugs real quick. Easiest way to test for fuel issues is to spray carb cleaner in the throttle body while someone is trying to start it. If it fires right up, keep hacking away on your fuel system. If not, check your spark system.

 

wmburns

SN Certified Technician

Aug 14, 2009

5,892

514

204

Houston Texas

May 27, 2011

#3

• May 27, 2011

• #3

Turn the key on but do not crank. Do you hear the fuel pump run for a few seconds? If not, STOP and find out why.

Cycle the key on/pause/off several times without cranking. The fuel pump should run for a few seconds with each cycle. Does this improve starting? If so, suspect fuel pressure leak down. This could be from a leaky fuel injector, regulator/sensor, or fuel pump check valve.

Hold the throttle part way open while cranking. Does this improve starting? If so, suspect a bad IAC value.

 

P

Price1

Member

May 11, 2003

109

0

16

Dryfork, WV

May 30, 2011

#4

• May 30, 2011

• #4

This may not be the correct fuel pump for this car, unless you've modified it to return style. Our '01's use a fuel pump that uses variable current to spin it to the desired need as ours is a returnless system. The bbk 255's are supposed to turn at a constant rpm with return systems.

That may be your problem, or at least part of it.

 

01cObRa01

New Member

May 12, 2011

10

0

1

las vegas

Jun 4, 2011

#5

• Jun 4, 2011

• #5

found out what the problem was it was the fuel rail sensor replaced it with a new one but 1 month later have the same problem, it was starting right up when i change the sensor but back to squre 1. what can cause the sensor to go bad?

 

KJ Hoppus

New Member

Mar 18, 2003

1,008

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0

Elk Grove CA

Jun 4, 2011

#6

• Jun 4, 2011

• #6

01cObRa01 said:

found out what the problem was it was the fuel rail sensor replaced it with a new one but 1 month later have the same problem, it was starting right up when i change the sensor but back to squre 1. what can cause the sensor to go bad?

Click to expand...

did you buy a cheap sensor or did you get one from ford?