99ccz28

iTrader: (6)

When I try to start my car sometimes it doesn't want to start. It just cranks. Then after a few time of that it will start. Or sometimes it starts right up. Any ideas?

It seems like it started this after a Racetronix fuel pump install. It has been like that for a few months.

twelver12

iTrader: (3)

are you letting the fuel pump prime before you crank or just cranking right when the key goes in

Silver98Formula79

iTrader: (17)

My Formula did that a few years ago, I had to replace my crank sensor.

NonGoggleGuy

Is the SES light on? Usually, the crank sensor will throw a code. Also, see if you can hear the fuel pump turn on with the key.

Silver98Formula79

iTrader: (17)

Check your fuel filter... Have you replaced it yet?

99ccz28

iTrader: (6)

I let the fuel pump run before I try to start it. I put the key in, wait a second until the pump turns off then start it. Fuel filter is the one of the things im thinking also. I will have to change it.

No SES light on.

99ccz28

iTrader: (6)

guys i still need help. I changed the fuel filter and still same problem. I even took off my timing tuner for nitrous. I thought maybe it was bad. Nothing.

There are times where it will start on the first try no problem. Then other times it doesnt want to start at all.

New pump
New filter
No ses on

bad_408_vert

iTrader: (6)

I had similar issues, the car 'd start, idle and then die.

Eventually not starting at all.

I 'd say check the coilpacks, Ignition control module and like someone suggested the crank sensor.

It won't throw a code sometimes but still can be bad or going bad.

99ccz28

iTrader: (6)

how can you check the crank sensor? Just replace it? I bought one and have it so i guess ill just have to change it

joblo1978

iTrader: (14)

Replace your igniton relay, I just had that problem.

Swap your fan relay with it, if it starts after that, and several times in a row, replace the relay. This has happened twice to me.

Cam and crank sensors rarely fail, start with the easy stuff first.

99ccz28

iTrader: (6)

Ok. Dumb question but where is the ignition relay? Is it under the hood? I looked in the fuse box under the hood. There are three relays but it say fan#1 fan#2 fan#3. Is there another place?

1987firechicken

You put a fuel pressure gauge on it yet to check the pump you just put in? It's cheap and easy instead of replacing random **** till it works.

99ccz28

iTrader: (6)

Yea fuel pressure is good. The pump has been on there for a while.

TJSZ

My GM truck just had similar starting problems.
The problem was a check valve in the fuel pump assembly, which maintains fuel pressure when the ignition is turned off. Had to replace the fuel pump.

99ccz28

iTrader: (6)

Well I changed out my ignition relay and the car started right up everytime all weekend long. Today I tried to start it and it wouldnt start. So im back to square one.

99ccz28

iTrader: (6)

Still need help! I changed the fuel filter, I changed the crank sensor. I checked all the fuses. I checked fuel pressure it is perfect. I really dont know what is left. It is still just cranking and not firing. Any other ideas?

LS1_Fonzie

iTrader: (4)

Could be your fuel pump relay or your starter relay. Those two were bad on my car. My car would just crank over and over. Took me a while to track it down but it ended up being those two. They're located in the fuse box under the hood.

99ccz28

iTrader: (6)

im so confused now. I put in the old ignition relay and now the car starts right up. i dont get it. i guess well see how long this lasts.

GOR1LA

iTrader: (1)

I just had the same problem and i think i tracked it down to do with the starter. I am waiting to see if the problem continues if so ill have to replace it.