no gas and no run, now consistent

years ago before parking with blown head gasket,
it would only start when cold

Does anyone know where to find that nice post where someone wrote up step by step what to check to diagnose no fuel to identify if it is a relay, fuse, wiring, or pump?

I replaced the pump last year, car hasn't been driven, sat for a year while I mustered enough belief to remove broken back head bolt without pulling the engine...finally got it back together

added fresh gas (only 2 gallons, figure it should be enough?),
and was planning to set the timing...

turn key, no pump sound...damn.
crank it a while, still no gas while the oil pressure gauge goes up to about 30psi (after many seconds cranking)

It's not getting any gas. nothing but air at the rail valve

next steps:

add 12 volts to terminal G and hope to hear a pump go?

find the fuse... its gotta be the one right there that tested fine last year, will test again...

identify the relay and figure out what's up... I haven't remounted to the bracket yet, need the color codes of the wires again

Any ideas where you might start to find what's wrong with the wiring?

Assuming I find something easy (I swear that relay tested ok last year),
where's that wire to disconnect or jumper something to set computer to timing set mode?

Thanks.



at least its got new head gaskets,
all the vac lines are correct, everything is wired up correctly, nothing missing, all good connectors (thanks to thirdgen generosity of posters),

new fuel injectors, wires, cap, rotor, spark plugs, air filter, fuel filter, secondary fan temp switch...

repaired fan wiring replacing corroded connectors with soldered wires with sealed shrink wrap, repair broken evap wire,
cleaned all grounds (2 straps behind the heads, one by the battery to the frame around radiator, additional ground added for fans on the other side by garage that customize to dual fans always run) ,
and of course new coolant...with oil change coming after I get it running

the radiator and hoses were replaced not long ago
the front end had ball joints and tie rod ends may 10k ago

Needs tires.
I can't wait to hear it roar again so I can burn off what's left on the tires.
Geez, it was exciting to sit in the car and turn the key with memories of its fun compared to its replacement: 88 Chevy Nova/Toyota!

Oh, and I've got a new computer chip in it from when the garage was diagnosing - he through that in for free just to get me to take that car off his lot (and the old chip too). It still ran then on bars stop leak.

I never did figure out why it ran when cold and hot, but when turned off hot, wouldn't start until cold... like forget at a gas station and you'll either sit two hours or get towed...which is where it all started several years ago...

 

Id almost bet the injs are stuck/gummed shut, esp if they are stock

 

It shouldn't be the injectors as they've never even had fuel to them
Bosch refurbs for ~$200 for 8 including shipping - just installed a few weeks ago when reassembling after head gasket replacement.
cheaper now:
http://www.southbayfuelinjectors.com...tpi-injectors/ that's what is in there now

I know I went through some diagnostics I can't find now before replacing the fuel pump.

tested the relay and fuse, checked for 12v back to wire by axle, decided it was a bad pump. Replaced the pump last year, one broken dealer bolt $15, had to cut off custom exhaust to get the tank out.

I know I cleaned some ground wire back under there, but don't exactly recall what.
That pump never got power until I put the battery back yesterday. I didn't add any gas to the tank until yesterday (2 gal isn't enough?).

I expected it to work after replacement...

I haven't again checked what happens when sending 12v to terminal G.
I'll do that in a few minutes. If that doesn't work, I'm guessing it is a bad ground somewhere.

(A bad ground caused the fan failure which caused it to overheat and blow the head gasket while it was on loan to my sister. All that was finally repaired and reassembled.)

I read another post on newer 90's camaros having a ground under the back seat. I know the t-top leaked a bit into the passenger back seat floorpan, so maybe if there's a ground under the seat that is it?

Does this 89 have such a ground under the seat?

I might as well find all grounds on the car and clean them.
Anyone know where all the grounds on the car may be?

Damn, I should have checked and tested new pump and wiring with the tank out?

 

Sorry, i was tired when i posted. I really should not do that.
So you don't even have 12v to the pump?
Im assuming its a bird? Did you check the single fuse by the battery and core support?

 

Do you hear the pump run when turn the key to the run position? You mentioned wanting to test that but I didn't see a result of the test.

 

89 firebird gta

No pump sound when turning key.

Also, no still gas at fuel rail after oil pressure comes up after cranking several seconds and seeing oil pressure gauge around 30psi. Did that several times and after each, checked fuel rail hoping for a gas squirt in the eye. nope.

last year:
big fuse under the hood by the driver fender inside was good
relay had 12 volts

know it had 12 volts when I replaced the pump.
I guess I'll have to jack it up again and check in back again too.

Going to go check those again right now.

not sure what you mean by core support

Thanks for taking your time with my problem.

 

the big fuse under the hood is good, although it is only 20amp, isn't supposed to be 30 amps?

VERY UNEXPECTED: found that the relay orange wire shows only 8 volts!

Don't those relays require 12volts to operate? What the hell is causing that?


I found a big red wire on the harness above the brake booster that comes out to TWO crimped connections! then it goes through firewall hole WITHOUT a grommet, has chaffed through and oxidized green! and has ANOTHER crimped connector inside the firewall! f'n nice job whoever did that $hit

Before I got the car, it has some extra security system probably with remote start and a cb...the wiring underneath looks like quite a hack...

there's some old ground to something with the wire pulled out of the crimp and some oddball blade fuse holder hanging there next to the main fuse block that goes to who knows what

I found a light blue wire going inside the in an extra hood lock (is that standard?) with one of those round keys (never got a key for it) goes nowhere but into the lock flex tube, and a matching light blue wire grounded purposefully cut above nearby
going to remove that entire mechanism (and solve the annoying issue opening the hood )

Then I can plug the firewall hole with a rubber grommet -
and replace the big red wire ... it appears to be a hack to route around the big plug in the firewall connector to inside which looks downright awful

there's a cut red wire on the inside on that block connector

the big red wire through the ungrommeted hole was crimped to a red wire right near there that looks like it used to connect to that block

I'm guessing its a main power feed... I'll post a few pictures of this mess when I find camera batteries.

I'm going to replace that and see where I'm at after that.

 

Hurrah. gas pressure! the main cable must have caused a drop in voltage enough to not run the pump?

Still showing 8volts on the pump relay though... cranked the hell out of it and voila

damn injector leaking like a gusher... wtf? appears to be coming out the top, which is where the o-ring is which was hand set into the rail before lowering the rail onto the intake, which is the directions they give for those bosch reman/refurbs

son of a b...

well, at least I know the pump works...so that's nice...

I don't feel like removing the plenum at the moment

 

no ez tricks to reseat that injector seal? I tried wiggling it around with no luck

how the hell the o-ring came off, I don't know, I used light mixture of soapy water to slip them in, just a little wiggle and they went in with no problem, or so I thought


maybe the wrong size o-rings? I used what they came with and the other 7 are not leaking...


it's a damn good thing it doesn't have ignition either or it could have been a total loss... I checked for ignition at spark plug wire 1 after cleaning up the gas (and wiggling the injector hoping it would stop leaking) and got no spark

one problem at a time... am I experiencing VATS issues too?

 

You prolly pinched the side of the Oring. No biig deal. Its cheap to free other than hour time.
One step at a time.