car wont fire

[mariposa_43]

I have a s10 blazer 4.3 vortec cpi. back in Dec i ran out of gas and my truck start to idle hard. so we changed the fuel filter and it ran better but slowly started to get worse. i had been driving for 2 hours and all the sudden started to lose power as if the timming belt had broke. pulled over for a second the tried to start car up. it started up so i drove another 10 min and then it did it again. so headed home made it with no problems. pulled the fuel pump to check the sock. replaced sock car still idled heavly and ran rich. decided to do a tune up change the plugs the wires the cap and roter. car started up sounded a lot better ran five min or so died and would not start again. pulled plug #2 to check if it would fire got nothing. so changed coil and still nothing pulled ignition module it tested bad. so replaced it and still nothing. if you have any ideas please let me know. Then thought it might be a alarm syst brain issue so checked to see if it was still hooked up. was not but found a few out of place going no where wires so pulled out. if there is a hort causing this were else should i look

[XTREME80]

Year model, engine and such would help. Also check t the coil for spark, SES light on and any DTC's also maybe a suggestion if its a 4.3 check the crank position sensor.

Oh yeah welcome to the Planet, Enjoy.

Shawn.

[mariposa_43]

I was told that it does not have a crank position sensor.

[blowns10]

No crank sensor to my knowledge!. The 3 things an engine needs to function is air, fuel and spark; with that being said, you already checked the fuel pump. Try checking if there's spark passing through the plug wires. Otherwise check it on an oscilloscope. Make sure the air filter is clean and there are no restrictions in the intake pathway. Check fuel pump pressure & volume. Make sure there are no kinks in the fuel line, there may be a restriction of fuel somewhere. Just my 2 cents. Late. Welcome to the site!!.

[spideyjected]

Check the fuel pressure. Does it have spark now? Ignition modules can be bad even if they are new, so check into that. If it smells rich, pull the upper plenum off and make sure the fuel injector is not leaking.

[CowardlyDawg]

Water in distributor?
Leaking injector?

[mariposa_43]

check the pump the sock and the fuel ine i am getting great pressure i am not getting a spark i have put new pulgs coill cap roter and wores also a new ignition module

[mariposa_43]

no water in ditributer no leak. car was running untill i chnaged the stuff now it just wont fire. someone said something about maybe the brians of a alarm system causeing the issue f there was one hooked up.

[CowardlyDawg]

Is your igniton module working correctly? Check for voltage

[XTREME80]

I have seen the the ingition module be bad out of the box like Eric suggested but i have all so seen the pickup inside the distributor go bad also. Sorry about earlier didnt look on your profile to see what kinda ride you had.

Shawn.

[mariposa_43]

how would i check that besides it being new?

[mariposa_43]

im not trying to sound stupid i am learning about this truck my last two cars were foxbody mustangs and i worked on then alot. this is new to me and i am not understang alot im a girly girl with limited car knowladge :) how do i check the module to see if it is working and what is the pickup inside the pistrubutre is it the roter if so its been changed

[XTREME80]

Where did it come from, If its from
advance auto take it back and get your money back.

If you have a ohm meter your can unhook the 2 wire pick-up pigtail to the module and ohm out the pickup and check for an open or short to ground. As a start, check all the basics no blown fuses and all first.

Maybe this will help.

[mariposa_43]

no i use auto zonr but they dont carry the ignition module for horizantal plugs so i had to get it at oreillys i dont have what you are talking about so i guess i need to pull it and hitch a ride to the parts store ;) i just think it is something else. thought it might be fuses checked them all and they are fine. I have also had several people look under hood and only thin they can come up with is the old alarm sys that was on there if the brain is still hooked up it might be causeing the car not to start

[XTREME80]

Here is the pic of the pickup coil.
http://www.autozone.com/autozone/catalog/parts/partsShelf.jsp?displayName=Pick-Up+Coil&currentPage=1&categoryDisplayName=Electrical+%26+Lighting&navValue=15700034&itemId=34-0&parentId=57-0

[mariposa_43]

does it plug into the ignition module. is it located inside the distributer somewere?

[mariposa_43]

do i have to take the distributer apart for the pickup coil

[mariposa_43]

ok so i thought id look for a switch under the dash like a kill switch for the alarm found one but it did nothing.