02-01-2005, 07:50 AM
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#1
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AF Newbie
Join Date: Feb 2005
Location: reidsville, North Carolina
Posts: 3
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96 wont start
96 4.3 auto 2wd. The story starts when I got a check engine light a month ago checked the code and it showed Running lean. Fixed a vacum line and that went away. Started having real long crank time before starts, took it in to shop, fuel pressure was fine got injestion cleaned. 2 days ago while driving I lost almost all power. Put my foot to the floor and was bareky able to do 30mph( motor just wasn't reving). But when I put it back in park it would run fine. Yesterday went out and would not crank at all. I replaced the fuel filter and plug wires and still nothing. Please, Please Help.
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02-01-2005, 11:26 AM
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#2
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AF Enthusiast
Join Date: May 2004
Location: Aurora, Colorado
Posts: 1,280
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Re: 96 wont start
Im thinking its your EGR valve
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2000 Chevy S-10 2.2L K&N FIPK GEN2 CAI Ravin Z55 Exhaust
2005 Hyundai Elantra GT 2.0L stock for now.
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Originally Posted by balls_to_the_wall
Some people are alive only because its illegal to kill them.
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02-01-2005, 01:28 PM
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#3
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AF Newbie
Join Date: Feb 2005
Location: reidsville, North Carolina
Posts: 3
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Re: 96 wont start
would the EGR cause the no start?
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02-01-2005, 11:19 PM
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#4
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AF Enthusiast
Join Date: May 2004
Location: Aurora, Colorado
Posts: 1,280
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Re: 96 wont start
i don't think so, but definitely the rough running and slow accel
__________________
2000 Chevy S-10 2.2L K&N FIPK GEN2 CAI Ravin Z55 Exhaust
2005 Hyundai Elantra GT 2.0L stock for now.
Quote:
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Originally Posted by balls_to_the_wall
Some people are alive only because its illegal to kill them.
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02-02-2005, 02:33 PM
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#5
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AF Newbie
Join Date: Feb 2005
Location: reidsville, North Carolina
Posts: 3
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Re: 96 wont start
#@%&!! Fuel Pump!
got it replaced today and running like a champ.
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02-02-2005, 07:50 PM
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#6
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AF Enthusiast
Join Date: Sep 2004
Location: pekin, Indiana
Posts: 582
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Re: 96 wont start
thought your pressure was fine? you didnt need to change it if it was good. plugs cap rotor would be a good start. then timing and check coil.
did you reset after check engine light problem was fixed?
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02-03-2005, 07:32 AM
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#7
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AF Enthusiast
Join Date: Jul 2004
Location: bay city, Michigan
Posts: 230
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???????????
call me stupid if you want
if the fuel pressure was fine and it wouldn't crank over,
then change a fuel pump then it cranks over?
there is more to it then that.
suggish engine chances are i would agree with mike egr valve is shot
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02-03-2005, 08:51 AM
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#8
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I'm gonna punch yo momma.
Join Date: Dec 2004
Location: In hot pursuit.
Posts: 5,350
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Re: 96 wont start
Well, the fuel pressure required to run these engines is a lot higher than most mechanics would expect. He may not have known that it takes a least 55psi for the engine to operate properly. If he saw around 50psi, that would seem great by most standards, but not for the 4.3
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02-03-2005, 09:35 AM
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#9
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AF Regular
Join Date: Nov 2004
Location: alexandria, Virginia
Posts: 277
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Re: 96 wont start
The fuel pressure at idle may have been fine when he checked it but the pump couldn't keep up with higher demands. My truck had the same thing happen to it, didn't want to rev up very well and after a couple weeks it wouldn't go over 2500 rpm. Idle was fine through all of this.
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02-03-2005, 10:26 PM
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#10
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AF Fanatic
Join Date: Oct 2004
Location: Muskegon, Michigan
Posts: 2,835
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Re: 96 wont start
holey &%*# 55+ lbs of pressure to run the 4.3 that seams awfuly high (expressing how shocked i am, not starting an argument)
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02-04-2005, 02:32 AM
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#11
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AF Regular
Join Date: May 2004
Location: New Bedford, Massachusetts
Posts: 148
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Re: 96 wont start
dirty injectors? had same prob with bud's 94 jimmy
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02-04-2005, 08:46 AM
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#12
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I'm gonna punch yo momma.
Join Date: Dec 2004
Location: In hot pursuit.
Posts: 5,350
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Re: Re: 96 wont start
Quote:
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Originally Posted by dmbrisket 51
holey &%*# 55+ lbs of pressure to run the 4.3 that seams awfuly high (expressing how shocked i am, not starting an argument)
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Depends on the type of injection system. Being a 96 it should be CSFI.
Key on, not running:
TBI 9-13psi
MFI 41-47psi
CMFI 58-64psi
CSFI 55-61psi
All should drop 3-10 psi while running.
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02-05-2005, 08:29 PM
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#13
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AF Enthusiast
Join Date: Sep 2004
Location: pekin, Indiana
Posts: 582
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Re: 96 wont start
make sure you check the pressure key on engine off.
if you changed fuel pump and running like crap, try a tune up and timming. let us know how it all goes or youll have alot more tring to guess.
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