Question about 1995 Pontiac Grand Am

1 Answer

Fuel injector over fueling

I have a 1995 pontiac grandam very hard to start. When running # 3 injector will constantly spray fuel. Need help dont Know why

Posted by on

  • 5point7 May 29, 2008

    this injector puts so much gas in the cylinder that it starts to miss. car has 45 psi fuel all firing in order injector to much gas

  • Anonymous Mar 15, 2014

    I NEED TO LOCATE #3 fuel injector on a 2007 mazda cx 7 2.3 liter

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 625 Answers

All the injectors are supposed to constantly spray fuel when the car is runing,
but on the hard to start it might be a worn out fuel pump or
a leak on the fuel pressure regulator, unplug the vacium hose from the regulator and if there is any fuel at all then regulator is not good

Posted on May 29, 2008

  • fernando arevalo May 31, 2008

    a bad engine cdoolant temperature sensor will make the injector to inject too much fuel also a bad axigen sensor will do the same

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

1995 f-350 runs rich and won't idle?


If this is a gas engine, check for air leaks on the intake manifold and every vacuum line and switch you see. Use a pump spray water bottle and with the engine running, spray around seams and such.

A change in rpm or stalling will indicate the leak.

What is probably happening is the air leak is making the system run rich to balance the air/fuel ratio. This would make more fuel dump into the engine where it is not needed.

Another possibility is a loss of the signal from an O2 sensor. The O2 sensor sends a signal to the ECM to set the fuel demands and let the engine controls know that the fuel ratio is rich-normal-lean to adjust to optimum running condition.

Now if this is a Diesel, the hard to start condition would be due to an inoperative glowplug timer or worn glowplugs. If this is the mechanically injected model, the injector pump is timed to get the fuel into the cylinder either earlier or later to change the fuel ratio. Your diesel injector pump would need to be retimed. It will help across the board.

Please rate my info and let me know how you solved this.

Mar 03, 2013 | 1995 Ford F350

1 Answer

Help with 95 firebird 3.4 no start


you have fuel pressure but the fuel pressure regulator can be bad

Nov 23, 2012 | 1995 Pontiac Firebird

1 Answer

1986 pontiac fiero won't start, changed fuel pump and relay gas coming up, but no spray from injectors


Actually the injectors don't spray "all the time". They pulse open for a few milliseconds then close every time they are grounded by the ECM. The distributor has a pick-up coil (Variable Reluctance sensor) that provides an A/C (Alternating Current) pulse every 120 degrees of crankshaft revolution to the Ignition Control Module also contained inside the distributor. The I.C.M. amplifies, rectifies and passes along the pules as a +12V square wave to the ECM. The ECM uses these pulses to calculate RPM and determine when the engine is rotating vs. stopped. Together with this information and more from Coolant Temp., Throttle Position, Manifold Pressure and Air Temp. the computer constantly 'looks up' what the appropriate amount of time it should pulse the injectors for to deliver the required amount of fuel.
With that in mind, the injectors are supplied with +12V via a 3 AMP fuse labeled INJ 1 for 1 bank of 3 injectors, and INJ 2 for the 2nd bank of injectors. Make sure your injectors are getting +12V whenever the key is ON or they wont fire (or at least 3 won't).
If all 6 injectors have +12V and you have fuel pressure (checked by pushing down in the center of the Schrader (tire valve stem looking thing) valve and fuel SPRAYING out, and your still not getting fuel it is probably because the injectors aren't pulsing. They are probably not pulsing because the ECM is not receiving any reference pulses from the distributor. If you have spark then you are producing reference pulses.
I hope some of this explained from an actual '86 Fiero GT 2.8L V6 owner/mechanic will help narrow down your problem.

Mar 20, 2011 | 1986 Pontiac Fiero

1 Answer

Need to know where to check fuel pressure on 97 grandam 2.4 L


2.4L ENGINES DONT HAVE TEST PORT ON THE FUEL RAIL.YOU HAVE DISCONNECT THE FUEL LINE QUICK CONNECT FITTING AT THE POINT WHERE THE FLEXIBLE FUEL FEED HOSE CONNECTS TO THE RIGID METAL LINE LEADING BACK TO THE FUEL TANK. YOU WILL FIND THIS FITTING BEHIND THE ENGINE NEAR THE FIREWALL.CONNECT THE SPECIAL ADAPTER HOSE TO THE LINES AND CONNECT A FUEL PRESSURE GAUGE TO THE ADAPTER HOSE. FUEL PRESSURE SHOULD BE 41 - 47 PSI. BECAREFUL MAKE SURE FUEL PRESSURE TESTER CONNECTIONS TIGHT DONT LEAK.GAS WILL SPRAY EVERYWHERE CAUSE FIRE.

Nov 27, 2010 | 1997 Pontiac Grand Am

1 Answer

My 1995 Pontiac Bonneville will turn over and start but always dies. Already replaced fuel filter and the fuel pump seems to be working but the car will not stay started. Checked the gas release on fuel...


crank position sensor...if the engine will start and run for a second or two then it dies. If, however, you can press and hold the gas pedal slightly and keep the engine going, then I would suspect the IAC-idle air control valve. This can be cleaned with spray carb cleaner.

Oct 12, 2010 | 1995 Pontiac Bonneville

2 Answers

My 2001 pontiac grand am all of a sudden quit running.went to start it wont start.changed spark plugs nothing.took off main fuel line right at fuel rail turned key gets plenty of gas.put carb cleaner in...


It depends on the # 1 ijector to fire then the rest follow,i u have test for injectors teat the 3 1 TO SEE WORKING PROPERLY,WHAT ELSE SOMETIMES ON GRANDAMS THE INGNITION SWITCH GOES OUT....

Aug 23, 2010 | 2001 Pontiac Grand Am SE

1 Answer

1995 Bonneville: i have 1995 pontiac bonneville fuel all the way to...


have 1995 pontiac bonniville sse fuel all the way to injectors will run if you put fuel into intake then starts and runs till fuel runs out. I have replaced fuel pump and fuel pump filter,cam postion sensor and coil paks

May 16, 2010 | 1995 Pontiac Bonneville

3 Answers

1989 Pontiac 6000 LE


Check AutoZone.com as they have an area where they can tell you where the parts are located on your car.

Jan 03, 2009 | 1989 Pontiac 6000

Not finding what you are looking for?
1995 Pontiac Grand Am Logo

Related Topics:

639 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

63661 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21990 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Pontiac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...