babbage1109

iTrader: (11)

The other day i came out and it wouldn't start. It cranks and acts like it wants to start but will not.

This is what's been done to it recently.
Fuel pump/filter/relay
Plugs/wires
Ignition relay/starter relay

Last night I shook the battery and coincidentally it started up. But the auto part store was closed and I couldn't really take it anywhere.

zipster

iTrader: (5)

I would think shaking the battery had nothing to with it, but the wires in the area that also moved while you shook the battery did.

babbage1109

iTrader: (11)

Yeah ik. I tried shaking it this morning just to see and no go. It wouldn't start. I sprayed starter fluid in the throttle body and it turned over but died right after.

gm02ceta

iTrader: (9)

If it started with starter fluid then died then you may have issues with the fuel system.

Darkman

iTrader: (2)

^^^^^^^
Agree


What caused you to change the fuel relay before?

babbage1109

iTrader: (11)

It got changed when we replaced the fuel filter and fuel pump a few months ago.

Darkman

iTrader: (2)

Well the fuel filter can be a maintenance item, but most folks do not change out a fuel pump or a fuel relay for "maintenrance." Were you having a fuel problem when those fuel-related components were cHanged?

babbage1109

iTrader: (11)

Yeah. The fuel pump went out. I mean really it seems like the same thing it's doing now. But when we replaced the fuel pump we replaced the filter and relay along with it.

babbage1109

iTrader: (11)

But I can hear the fuel pump turn on when I turn the key on

LaBLKv6Z

iTrader: (13)

Plug a fuel pressure gauge into the fuel rail and see if you're getting fuel to the rails.

1SuperBadLS1

Check for spark.

OutToWinPAHC

iTrader: (10)

Wonder if the FPR is having issues. Checking fuel pressure is a must. When in doubt the big 3.... Fuel pressure, spark, compression. If you have a good volt meter or an o scope check the injector plus for reference. You should see the ECU opening and closing the ground side. Ignition on +12 volt to ground on one wire always.

babbage1109

iTrader: (11)

Fuel pressure reads 50ish when key is on. How do you check for a spark?

DeadOnWS6

iTrader: (9)

pull a plug, ground the threads to a good ground, roll the engine over and see if you can see spark.

babbage1109

iTrader: (11)

And. What about the ingition control module? Does anyone know where that Is. Or a picture. A friend mentioned that also. Just trying to think of everything.

ae13291

iTrader: (8)

doesent have one ^^^ has a coil for every spark plug

OutToWinPAHC

iTrader: (10)

The ECU sends the fire signals to the coil packs based on the readings from sensors. Takes knock, MAF/MAP, TPS, and temp into account and adjust spark on those tables in the ECU.

But yeah you can get a spark plug, unplug the spark plug in the head and attach to the solo plug. Hold that plug against the block or a good ground and have someone crank it over. You can see the spark. You can also use a current clamp and a meter / scope.

babbage1109

iTrader: (11)

I will try that after work. And I I have no spark I need to replace the coilpacks?

OutToWinPAHC

iTrader: (10)

I doubt you lost every coil pack... if you did you might need a sensor like a cam angle or crack angle sensor. Let us know how you make out.

babbage1109

iTrader: (11)

No spark on any coil pack! Fml