Question about 2001 Pontiac Sunfire

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2001 pontiac sunfire fuel pump wiring problem

I had a remote starter installed, after almost a year I was having problems starting the car and it would turn off randomly while driving. The dealer said about 20 wires were damaged from the quick-connects the other shop used to install the remote starter. I've repaired about 7 of the wires myself (dealer wants $600 to repair). It seems like the fuel pump is being shorted out. I need to know which wire powers the fuel pump.

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I don't think its your fuel. Usualy we connected the kill switches to the ignition or power to the spark plugs. Just to make sure you can buy a can or 2 of brake clean thats what is call. you can buy it in autozone cragens or any autostore. When it does that problem that it doesn't want to start. remove the plastic hose that goes to your intake and spray a little while cranking(trying to start) if starts than your on the right track if it has no change you should start looking power for your spark plugs

Posted on Dec 10, 2008

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Fuse for fuel pump on 2001 pontiac sunfire


There are some logical steps need to be taken 1st. Verify if the engine has air, fuel and spark. Fuel can be checked with an inline gauge at the fuel rail. There could be several different things wrong. Bad ECM, fuel pump, injectors, fuel pressure regulator etc. Need to verify spark, this too may have several different problems. Bad ECM again, power/ground circuit faults, coil pack ect.

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This could indicate a weak fuel pump or clogged pump strainer. I would start by replacing the fuel filter since this should be done every two years. The fuel pressure bleeds off after some time so the pump has to try to build the pressure back up on a cold start. This is the cheapest and easiest fix to try first.

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Idoes anyone have answer to I have a problem my 2001 sunfire will not start ...have checked fuses and installed new relay switch any other options I can try?


Need a lot more information. Does it crank? does it try to fire? have you checked the fuel level?
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Feb 25, 2012 | 2001 Pontiac Sunfire

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I just put a new fuel pump in my 2001 sunfire. it still wont start what else could be wrong they say it is not the starter thank you


The two most important things are fuel and spark and it could be a number of things within each of those.
You need to find out if you DON'T have one or the other. You replaced the pump so one could assume you have fuel. Now you need to see if you have spark. If you're without one then that helps to narrow things down.

Aug 25, 2011 | 2001 Pontiac Sunfire

1 Answer

Want start


Hello,

When a 2001 Pontiac Sunfire reduses to start, then it means there is a problem with the car. There are several causes that might lead to such a problem.


A dead fuel pump (could be the pump, pump relay or wiring circuit);A plugged fuel filter;Low fuel pressure (weak pump or restricted line); or No pulse signal to injectors (bad injector relay or PCM driver circuit).

One of the first things to check is the fuel pump.

Run a test on this components and you should be able to detect where the problem is from.

Take care and good luck

Jan 05, 2011 | 2001 Pontiac Sunfire

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2001 Pontiac Sunfire automatic engine may start


You might want to have it checked to see if you have fuel pressure or see if there is spark going thru to your spark plug.If everything is ok it might be your timing belt needs replacing

Jul 23, 2010 | 2001 Pontiac Sunfire

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2001 Pontiac Sunfire has one injector dumping fuel. Have changed fuel pump, pressure regulator map sensor and run exterior ground and problem still exist.


check other injectors, use an ohm meter, use readings form good injector and compare, to find bad ones, also use a noid light to see if they are getting power start there,

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Realy esnsor


the 2001 pontiac sunfire has a very common electrical problem right off the line....nothing is done right.....check the wire for the starter relay and if they are ok check the starter solinoid itself if its the same problem if you go to tighen the terminals they will bust off from voltage arking inside

Dec 18, 2008 | 2001 Pontiac Sunfire

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I have multiple wires damaged from remote starter installation. I need to know which wire connects to the fuel pump.


i install car starters and no wires goe to fuel pump they would have tapped into theft system and ignition sytem not the fuel system.

Dec 08, 2008 | 2001 Pontiac Sunfire

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