'88 Camaro (TBI) won't start/will start, need help

[David A. Cooley]

I would check the Fuel pump relay first.  Make sure that there is 12 volts 
going to the fuel pump when trying to start.  If so, hook a meter across 
the TBI injector and see if you get voltage pulses.  If not, time to check 
grounds, connectors etc.  If you both have the same year/motor, put your 
ECM in his car and his in yours... if yours won't start and now his does, 
the ECM is definitely bad.


At 03:32 PM 10/24/99 -0600, you wrote:

>My friend has a '88 IROC with a L03 TBI motor and auto trans.  It used to be
>that it wouldn't start once a month, crank like an idiot and then lights
>after a while.  Lately, problem once a week, no start, sometimes tow home.
>Past few days, problem every day PLUS it cuts out driving and then dead,
>tow.  SO, we tried putting some fuel down the throttle body and no
>start/catch.  The injectors are NOT spaying fuel at all.
>
>I have a '88 TA with a L03 TBI (as I am sure you guys know)....so I parked
>it beside his, disconnected my distributor (so it won't start), removed my
>air-cleaner and looked.  When I crank my car, injectors spay fuel like nuts,
>his, nothing....so what could this be.  ECM.  He replaced the fuel pump
>(died recently) (It has
>pressure), fuel filter, has spark, but still NOTHING.  THEN, after an hour
>or so, just starts.  Runs, a little later, stalls and dies.  Computers says
>nothing (no faulty code flashes but 12 does indicating diagnostic mode).  I
>also noticed that when you
>disconnect his battery (to reset ECM), when you later connect it, no
>"click".  Also, re-setting the ECM does nothing.  He took it to a shop and
>they couldn't figure it out.  So basically, he is SCREWED unless we figure
>it out.  Car seems to run fine WHEN it runs.  ANY help is needed.
>Basically, the shop said either injectors OR injector control OR wires.
>BUT, both injectors give nothing.  Could it be the ECM.  This would be my
>guess.  However, it's just a guess. Unless the fuel-pump is not working
>properly sometimes for some
>reason.  There is fuel pressure, though.  He had this problem before but not
>bad so he didn't care.  Now it's going nuts.  Also, he replaced the
>Alternator (was dead), cleaned all he battery connections, replaced plugs,
>cap, rotor, air-filter, IAC valve, etc.  No help.  Thanks.  Igor.
>

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            David Cooley N5XMT           Internet: N5XMT at bellsouth.net
      Packet: N5XMT at KQ4LO.#INT.NC.USA.NA   T.A.P.R. Member #7068
    Sponges grow in the ocean... Wonder how deep it would be if they didn't?!
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