Results 1 to 10 of 10
Like Tree4Likes
  • 1 Post By sjgreen6
  • 1 Post By sjgreen6
  • 1 Post By 98 Formula FB
  • 1 Post By SMWS6TA

Original low mile 2002 T/A now fails to start

This is a discussion on Original low mile 2002 T/A now fails to start within the General Help forums, part of the LSx Technical Help Section category; Hi everyone. I don't know what to do so I will lay out what happened in order in hopes that ...

  1. #1
    Junior Member
    Join Date
    Dec 2006
    Location
    USA
    Posts
    82

    Blk/gld,Blu,Blk
    78TA,92RS,02Hawk

    Original low mile 2002 T/A now fails to start

    Hi everyone. I don't know what to do so I will lay out what happened in order in hopes that someone will have an idea.
    2002 Trans Am Firehawk. 3,600 miles. All original.
    Been stored in garage un-driven or started about 2 years.
    Went to drive it today.
    Turned key. Gas gauge just a little above E. Check gauges light on due to low fuel.
    It started right up like normal.
    Running a little rough at first then starting to smooth out some.
    I sat in the seat a few minutes sorting through insurance cards, registration.
    Then it died instantly like I turned off the key. No sputtering, choking etc.

    I tried to start it back. It cranks but that is it.
    Each time I turn the key on I hear the fuel pump sound like normal but it will not start.
    I put 2.7 gallons of fresh 91 octane gas in it. (It's only ever had 91 in it since new)
    I turn the key on and the gas gauge now shoots up to F.
    It cranks fine but will not start.

    So it sit in the seat a couple minutes thinking with the key on and I notice the fuel gauge gently go from F down to almost 1/2 and then back up again.

    It does this a few times.
    I turn the key off and back on and it goes back to F (pegging past F actually).
    When I crank it the gauge drops to E while the engine is cranking then returns to F when I stop cranking.
    So when it sits with key turned on, the gas shows F and the service engine light and check gauges lights are on.

    Any ideas?
    Obviously the gauge is not correct now as it is not full of gas.
    I should have put fresh gas in it before starting it the first time....

  2. #2
    Member sjgreen6's Avatar
    Join Date
    Dec 2009
    Location
    Jefferson City, MO
    Posts
    503

    Navy Blue
    2002 Trans Am WS6 Conv

    One thing to check that is pretty easy is to replace your ignition relay in the fuse box under the hood near the left front corner. When these go bad they will allow your car to crank but not start just as you are experiencing. If that is not the issue, then you need to check the fuel pressure at the rail. You can probably get a loaner gauge at your local auto parts store if you don't have one. These cars are very sensitive to fuel pressure and the original pump may have quit even though you have low mileage. You should also check to see if your computer has stored any fault codes. You may not be able to see the service engine light warning as you are not actually getting a start. Good luck.

  3. #3
    Junior Member
    Join Date
    Dec 2006
    Location
    USA
    Posts
    82

    Blk/gld,Blu,Blk
    78TA,92RS,02Hawk

    Thank you very much for taking the time to help.
    I changed the ignition relay with a new one and unfortunately it made no change.
    I hear the fuel pump start like normal each time I turn the key. If it's gone bad would it still do that?
    A friend said he will come help test with a fuel pressure gauge.

    The fuel gauge is showing either F or 1/2 now. It varies. That is strange...

    I hope it's not the fuel pump as it's a pain to change those in these cars and dread having a shop get hold of this original low mile car.
    Heck, it still has the factory inspection stickers on the windshield and factory air in the tires. Still smells new...

    This timing stinks as I was getting ready to try to sell the thing

  4. #4
    Member sjgreen6's Avatar
    Join Date
    Dec 2009
    Location
    Jefferson City, MO
    Posts
    503

    Navy Blue
    2002 Trans Am WS6 Conv

    Sorry I was really hoping it was the easy solution. Definitely check the fuel pressure as our cars are very sensitive to it. The gauge jumping up and down could be a bad ground somewhere. If you have to do the fuel pump, it isn't as bad as it seems at first. I did a Racetronix unit using the trap door method in a few hours with nothing more sophisticated than ramps and jack stands.
    ATI Procharger, SFCs, Y-pipe, LM2, Corvette N73 Magnesium Wheels, 4th Circle Designs Stripe and Overlay kit

  5. #5
    Junior Member
    Join Date
    Dec 2006
    Location
    USA
    Posts
    82

    Blk/gld,Blu,Blk
    78TA,92RS,02Hawk

    Thank you sjgreen6.
    Me too. Plan now is to check fuel pressure with gauge and maybe change fuel filter.

  6. #6
    Junior Member
    Join Date
    Jun 2019
    Location
    Central OK
    Posts
    14
    Quote Originally Posted by sjgreen6 View Post
    The gauge jumping up and down could be a bad ground somewhere.
    Crank w/o starting would be another symptom of that. Emissions components harness stuff. I know there are a couple of grounds up front on a '98, although unless a mouse chewed your wires up somewhere or something I don't know why they would be loose; or why it woulda started at all.

    Pulling the control module codes is an easier check than any of it, but it may or may not put you on to your problem, even if one or more items show up there.

  7. #7
    Spaz is My Mentor SMWS6TA's Avatar
    Join Date
    Feb 2009
    Location
    Ugy Lower Corner of AL
    Posts
    11,412

    Navy Blue Metallic
    98 T/A w/ mods, 00 FBVert

    Fuel sending unit might be the real culprit. A bad ground wire on it will cause the issues your seem to be having.

    When Mine was an issue I could run, idle and even drive fine, but if I hit a hard bump or turn it would cut out.

    I have a Fuel Pressure gauge on my pod and I could see it randomly cut out. It was very frustration, I evn changed out the Racetronix wire harness and relay because I thought something had happen to them.

    I finally gave up and decided to eat the bullet and get a new sending unit and it totally fixed my issue. Even after looking over the unit very thoroughly I still couldn't find where the ground was weak or not making full contact.



    Now if your fuel pressure is not at 56ish psi at the rails you might want to check the inline filter. If the car has been sitting for a while they do clog up, same with the fuel pump sock.
    http://www.ls1.com/forums/f7/my-6-liter-build-174257/

    http://www.ls1.com/forums/f8/my-8-8-rear-build-165553/

    6.0L Block - Forged 403 built, breaking it in , Polluter Stg3 Cam, FAST 102mm Intake, NW102 TB, MSD wires, NGK TR6 plugs, Truck Coil Packs, LS3 Fuel Injectors, CC Pacesetter LT Headers, TS&P ORY, QTP e-Cutout, Magnaflow Muffler, 104mm Air Lid & Line Lock, Catch Can, Stage 2 T56 w/Viper shaft, PRO 5.0 Shifter, Tick MC, SPEC Stg3+ Clutch, QT SFI BH, MWC DSL, UMI: SFC, PHB, LCA's, LCA Relocation Brackets & TA, Hotchkis Springs (1" Drop), YR1 Snowflake Wheels wrapped in NT555 tires & Custom Fab Ford 8.8 rear w/4.10 Yukon Gears, WSQ Hood, 3"CM Strange Eng Drive Shaft.

    00 FB Vert

    Horsepower never lies, but is often lied about!

  8. #8
    Member sjgreen6's Avatar
    Join Date
    Dec 2009
    Location
    Jefferson City, MO
    Posts
    503

    Navy Blue
    2002 Trans Am WS6 Conv

    Have you replaced your fuel filter and tested your pressure at the rail? If they are good then your best bet at this point in my opinion is to pull the pump out and see if you have problems there. Our ethanol fuels can create a lot of rust on parts that sit in fuel that has separated over time. With your low mileage this is likely the case at some points.

  9. #9
    Junior Member
    Join Date
    Dec 2006
    Location
    USA
    Posts
    82

    Blk/gld,Blu,Blk
    78TA,92RS,02Hawk

    Thanks again everyone. No fuel at the rails. Changed the fuel filter and no fuel to there. Can hear the pump prime with the key on. Fuel gauge still not correct. Plan to blow air back up from the filter connect point to the tank to see if clog that direction. If after that still no fuel at filter then pump is clogged/broken etc and have to pull the tank......
    If after blowing we get fuel to the filter but not to the rail then possible clog between the filter and engine.
    ?

  10. #10
    Spaz is My Mentor SMWS6TA's Avatar
    Join Date
    Feb 2009
    Location
    Ugy Lower Corner of AL
    Posts
    11,412

    Navy Blue Metallic
    98 T/A w/ mods, 00 FBVert

    If you go in do yourself a favor and do the trap door. Dropping a heavy ass tank with fuel in it sucks. IMHO the trap door should have been in placed from the factory. Just be careful making the cuts and you'll be fine.


    I'm fixing to have to do this on my daughters FB soon. Did it on my 98 and have zero regrets.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. 1998 ws-6 randomly fails to start....help
    By midnitejam in forum Firebird / WS6
    Replies: 6
    Last Post: 12-28-2015, 04:05 PM
  2. For sale 2002 ws6 34800 original miles
    By clow76 in forum Firebird / WS6
    Replies: 0
    Last Post: 09-13-2012, 05:47 PM
  3. For Sale: 2002 Chevy Camaro SS, 5,300 original miles!6 spd!!
    By Dman3 in forum Vehicles For Sale / Trade
    Replies: 5
    Last Post: 06-16-2010, 03:22 PM
  4. Original replacement battery 2002?
    By Bandit400 in forum Firebird / WS6
    Replies: 5
    Last Post: 01-20-2009, 12:26 PM
  5. FS: 2002 Camaro Z28, 17K original miles!!
    By Rob Nelson in forum Vehicles For Sale / Trade
    Replies: 24
    Last Post: 12-13-2008, 09:52 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •