will not start

epix

epix

Typhoon
Just replaced my pos odessy battery yesterday with an Optima Red Top, started up just and drove a few miles just fine..

Got home and parked the Typhoon, well later that day when I go to start it, it starts up for about a second then dies. Today it just cranks and cranks, never starts.

I've done a search..
ECM B was fine (replaced it anyways)
Datamaster didn't spit out anything unusual
I beat on the gas tank to loosen any debris if there was any

It's done this once last fall where I drove it fine, parked, then didnt want to start back up, so i let it sit and later in the week it just started up just fine.

I am thinking my fuel pump (stock) may be dead. I have a walboro replacement, just havent had a chance to install it yet. I can't really be sure as my IC pump is hotwired and its noise will mask the fuel pump running.

is there any other tests I can perform to see what may be wrong?
 
JustBeachin

JustBeachin

Plays well with others
Re: will not start

T-56 said:
Disconnect the I/C pump, turn the ign on and listen for the fuel pump.:2cents:
Click to expand...

IC Pump fuse is right behind the alternator.

You can also hook up a fuel pressure gauge to the fuel rail and see what you get.
 
gjp

gjp

another post whore
Re: will not start

you could use the fuel pump wire by the firewall to see if it works. Use a fp guage to see if it has good FP. Next step would be to check ignition.
 
epix

epix

Typhoon
Re: will not start

live1053rulz said:
:squint: I like my Odysseys.
Click to expand...
was your the little dinky 'lawnmower' type? thats what I was using, mine could never hold a charge.

anyways, how do I use that grey wire for the fuel pump in the firewall? im not very good with electrical systems.. i did notice it had an end it looks like a plug of some type.. how do you use this?

are the fuses behind the alternator far behind it like on the firewall.. or right near it?
 
Merk

Merk

Donating Member
Re: will not start

Push the release on the schrader valve. If gas shoots out, you are getting fuel.

Might be a wise investment just to replace the pump and filter anyways.
 
Robert Lone

Robert Lone

MUTANT
Re: will not start

Merk said:
Push the release on the schrader valve. If gas shoots out, you are getting fuel.

Might be a wise investment just to replace the pump and filter anyways.
Click to expand...
Alot better than what I said...^^^^^^^
 
SonomaGTlover

SonomaGTlover

Doghouse Member
Re: will not start

Merk said:
Push the release on the schrader valve. If gas shoots out, you are getting fuel.

Might be a wise investment just to replace the pump and filter anyways.
Click to expand...
:stupid:
I vote pump and filter.
I had similar symptoms with my GT years ago and it turned out to be a clogged fuel filter.
Coincidently, I had installed a new battery as well, maybe it's the extra juice that pushed
more debris through the line from the tank? Or put the finishing touches on the pump?
 
Don W.

Don W.

Stab it and steer it
Re: will not start

If it cranks the the bat itself is not the problem. Fuel or ign as already mentioned. Right behind the dist. is a connector. You can run a jumper from there direct to the + side of the bat and run the FP. Even with the the IC pump running you can hear the FP this way. (At least on my truck.) Run it for a moment and push the schrader valve. (For this test it works to turn the key on. The FP runs for 2 secs when the key is turned on.) If fuel comes out then it's prolly ign. Get an old spark plug, connect it to the dist end of the coil wire, set the plug on a good ground and crank to see if you have spark. Keep the plug away from the fuel you just spilled.
 
dalwine250

dalwine250

Donating Member
Re: will not start

pete, remove gas cap,listen .if you want help changing the pump,i'd be glad to help.getting to be a pro at dropping s-10 tanks,let me know
 
SY2932

SY2932

Administrator
Re: will not start

IMG_0846.sized.jpg

"Applying 12 volts to fuel pump test connector to troubleshoot fuel pump or set fuel pressure with vacuum line still connected and motor off (note fuse for safety)."

IMG_0220.sized.jpg

"Intercooloer pump fuse location behind alternator. Fuse is in a weather pack connector and the top has to be opened to expose the fuse."

Okay time for some intercooler basics... If you are running the stock chip, the IC pump will NOT turn on unless the coolant has reached 215 degrees. The only way it will come on is one of three ways: 1. The pump has been hardwired to come one with the ignition in the "ON" position. 2. You are running an aftermarket chip that turns the IC on at a lower temperature (and the coolant has exceeded that temperature). 3. You have the ignition "ON" and have the "A" and "B" terminals of the ALDL jumpered to run the pump as well as pull the DTC codes.
 
Last edited:
epix

epix

Typhoon
Re: will not start

i'm back at school now, will not be able to try again until next weekend..

not really too important anyways, cuz as soon as I am done with school in a couple weeks the motor is being pulled/rebuilt
 
Robert Lone

Robert Lone

MUTANT
Re: will not start

epix said:
i'm back at school now, will not be able to try again until next weekend..

not really too important anyways, cuz as soon as I am done with school in a couple weeks the motor is being pulled/rebuilt
Click to expand...
Oh, so now it's not really too important anyways! Now that we've all racked our brains knowing that you were walking because your truck was down. Way to abuse you buddies man! :rant:


BTW, j/k :tup: Keep us posted on the Ty...
 
SBNova

SBNova

New member
Re: will not start

Another thing to check is the TPS sensor reading. I diagnosed a friends Vette last year that had a intermittent no start. I drove the car for a week before it didnt start on me. The TPS was failing to full 5v output. What this does is tell the ECM you are holding the gas pedal to the floor, which puts the ECM into "clear flood" mode and turns off the injectors.
 
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