Question about 1999 Pontiac Grand Am GT

1 Answer

My 99 grandy gt 3400 fires turns over but will crank only when gasss is introduced thru intake have checked all circuits and wires and replaced sensors fuel pumps are working and getting presure have spent two weeks working on this car and no results

Posted by on

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
  • 507 Answers

Have you checked the impuse of the injectors? If you got fuel pressure, I'ld look there if it runs with adding gas through the intake.

Posted on Aug 20, 2010

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

99 grand am 3400 gt doesn't start. It ran fine , but now it won't start. It has spark and fuel . all fuses are good . Cranks over but doesn't start. It only stars if I put gas in the throttle. ????...


Check your ignition module.
My thought is, you have no fuel injector pulse. The voltage for fuel injector probably goes hot with the key on, the computer controls the ground circuit. If your missing rpm signal, no fuel injector pulse.
Another thought is antitheft/security system, where applicable.

Mar 11, 2016 | Cars & Trucks

1 Answer

My 2004lmpala wont start 3400 engine ?


If it cranks good but won't start, have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure. Also check for fuel injector pulse.

What lights, are you talking about dash lights? If so, some of those items may not go hot until you turn on the key. Then I would check ignition switch and wiring. I haven't looked at your wiring diagrams. I would think the horn circuit would be hot all the time.

Nov 05, 2015 | Cars & Trucks

1 Answer

Cranks, will not start


Sounds like a bad fuel pump. Check the schrader valve for fuel, or check fuel pressure. Listen and hear if the pump is turning on when priming the ignition.

Nov 10, 2013 | 1993 Jeep Grand Cherokee

1 Answer

Have a2003 buick rendezvous 3400 p0303 changed plugs, wires , coilpack ,then i got it did compression check 140psi figured mechanicly good figured injector replaced that and still same misfire. was...


you might not be getting a injector pulse signal at # 3 cylinder ? easy way to check this is with a noid light, it plugs in to the end of the connector and as crank the engine the light should flash. if it does not flash check wire harness for a open circuit from injector to computer ( e.c.m.) if thats alright possibly e.c.m. bad . if you cant find noid light you can use a digital volt meter. good luck

Feb 19, 2011 | Buick Rendezvous Cars & Trucks

2 Answers

Swapped a 1999 420A engine into a 1995 eclipse (also a 420A) and we have no spark. We started by checking the cam sensor and it is working properly it is upside down from the 95 but the ASD relay is...


first the cam sensor shouldn't be upside down from the 95. they both should be with the plug facing down. they 95 CAS has a different plug than the 99 CAS.
the 95 has round pins and the 99 has flat pins.

95-96
9f942a5.jpg
--------------------
97-99
ad9a342.jpg
-----------------------------
also the 95-96 relays are opposite the 97-99

95-96
db7e0e0.jpg
------------------------
97-99
c98327d.jpg
---------------------
besides that it could be the ecu. i also have heard of the locating pin on the intake cam shearing off, allowing the gear to turn with the timing belt without the actual camshaft spinning.

Sep 27, 2010 | 1996 Mitsubishi Eclipse

1 Answer

99 Grand Prix 3.8 liter series 2 wont start


sounds like the plugs are wet, Always replace them if you replace the upper intake manifold,

Sep 13, 2009 | 2001 Pontiac Grand Prix

3 Answers

1999 Pontiac Grand Am with "lower intake leak"...What does this mean specifically? Would this mean the intake for the radiator, gasket, or valve?


Usually intake has to do with the induction system, as in intake manifold , The intake manifold can have several types of leaks, the intake can have a vacuum leak, oil leak, coolant leak or a combination of any of the before mentioned....hope this helps,

Aug 30, 2009 | 1999 Pontiac Grand Am GT

Not finding what you are looking for?
1999 Pontiac Grand Am GT Logo

59 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

75005 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7710 Answers

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

Answer questions

Manuals & User Guides

Loading...