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Author
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Topic: 89 5.0 sounds like missfire puddering no power
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VENOMUS PONY 5.0
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Member # 7785
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posted
 
 
i was sitting at the light waiting for it to turn green and the car started to sound funny. so i checked everything connections etc.... i changed the plugs and wires. the cap and rotor. ignition module and coil what should i start looking into now the fuel system. fuel pump sounds good i can hear it. i do get a smell of fuel not strong one.. can it be the injectors and even maybe the egr.... need some input fast please thanks.....
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If You Want More Inches - Stroke It!!!
Mystery stang in the works..
Posts: 1602 | Registered: Jul 2007
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2T0NE
Go 49ers
Member # 4216
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Aj at norcal . Around the block from you let me know ill give u his number
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Originally posted by x Raelsmar x:
Can't wait till the Giants lose tomorrow night so all you Giants fans are forced to shut the fuck up.
Posts: 14676 | From: 760 carlsbad | Registered: Mar 2004
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5.0 with some go
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Member # 8248
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posted
might be the distributor, the stator or pip sensor goes bad in them. also check the rail to see how much fuel pressure ur getting to see if your pump is bad or not, or hit the schrader valve with a screw driver to see if ur getting fuel but lookout because the fuel will spray out the valve.
Posts: 247 | From: walnut creek ,ca | Registered: Feb 2008
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VENOMUS PONY 5.0
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Member # 7785
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timing is good fuel pressure is good changed some of the injectors out still nothing. i think its going to be the distributer bro like u said.... i will keep you posted. there is a poping sound it will make here and there. sounds like detniation going on in the motor coming from the driver side.
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If You Want More Inches - Stroke It!!!
Mystery stang in the works..
Posts: 1602 | Registered: Jul 2007
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1fastmach1
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Member # 10137
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check ur firing order on ur distrbutor
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REDLINE MOTORSPORTS CC EST 2011
1993 CHP sold
2004 mach 1 408 Windsor n20 fed
R.I.P. JORGE GUTIERREZ JR
6/13/1982- 11/05/2013
Posts: 2592 | From: clawwwitter to 7th st | Registered: Jul 2010
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VENOMUS PONY 5.0
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Member # 7785
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79 cobra the firing order i checked 3 times not only that, but i did all that because it started acting like that other wise i wouldnt have replaced the list of things. 5.0 with a go now the pis sensor is inside the distributor and i beleive that actually controls the fireing order correct me if iam wrong anybody.... 2 tone,79 cobra, 5.0 with a go thanks more input would be great.
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If You Want More Inches - Stroke It!!!
Mystery stang in the works..
Posts: 1602 | Registered: Jul 2007
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2T0NE
Go 49ers
Member # 4216
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posted
My guess mosky ...is one of ur injectors.when I was driving it was sputtering also while at idle u could tell something wasn't their 100 percent..either fuel or spark..I say fuel
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Originally posted by x Raelsmar x:
Can't wait till the Giants lose tomorrow night so all you Giants fans are forced to shut the fuck up.
Posts: 14676 | From: 760 carlsbad | Registered: Mar 2004
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5.0 with some go
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Member # 8248
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posted
yeah the pip sensor is in the distributor it controls spark and injector pulse ...if your smelling raw fuel id also check to make sure your injector and or fuel rails aren't leaking while you are in there.
Posts: 247 | From: walnut creek ,ca | Registered: Feb 2008
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coupedup
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Member # 9987
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Have you cleaned/pressure washed your engine bay ? Somtimes water can seep down into the distributor and cause it to missfire... If not check the idle air control valve (IAC) or your vaccum lines.
Posts: 4406 | From: Ca | Registered: May 2010
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VENOMUS PONY 5.0
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Member # 7785
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no i have not power washed it at all. the iac i have not replace it yeat vacum lines are all good. today switched out the computer and distributer that didnt help at all.... now iam wondering if its something internal... any suggestions for example a vavle stuck? a roller rocker stuck? something with a lifter. now the motor itself has no nocks etc.... but this odd sound in the off road x pipe that it did not have befor. its sounds almost like a little exhaust leak and like it has a mild cam but witch it does not have a leak or a cam.... what started it all on my way home from work this notchback i saw pulled nexted to me so i went from 3rd to 2nd so now iam at about 4000rpm so i tapped the gas pedal quick let it go then tapped it again and let it go then pulled up to the red light... thats when just chillen at the light it started to idle funny.
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If You Want More Inches - Stroke It!!!
Mystery stang in the works..
Posts: 1602 | Registered: Jul 2007
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VENOMUS PONY 5.0
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Member # 7785
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posted
what about faulty egr
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If You Want More Inches - Stroke It!!!
Mystery stang in the works..
Posts: 1602 | Registered: Jul 2007
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5.0 with some go
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Member # 8248
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make sure your maf is clean, might want to clean the iac valve, and check the tps sensor voltage. there is also the act sensor located in the intake that can go bad. have you taken it somewhere to see if its throwing codes instead of throwing parts at it =)
Posts: 247 | From: walnut creek ,ca | Registered: Feb 2008
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93coupessp
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Member # 8418
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I doubt it's something internal but for save measures take both valve covers off and have someone turn the motor over without starting it and watch all the rockers closely make sure none are not moving watch ur valvesprings to make sure there coming back up. I doubt it's that tho. Did you change ur plugs? What brand plugs and what's the gap
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89 gt project
09 f250 diesel 605hp
14 cts-v
13 harley fxdb 103ci
Posts: 1919 | From: Hell | Registered: May 2008
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coupedup
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Member # 9987
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Also you may want to check your electrical connections with a probe and clean the inside of your elec. con. plugs with a wire brush...also clean the maf with brake cleaner and change the egr.
Posts: 4406 | From: Ca | Registered: May 2010
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VENOMUS PONY 5.0
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Member # 7785
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posted
plugs are ngk gaped at 54. i will clean the mass air even though i changed it clean the iac the tps i will see what i can do with that and wire brush the connections. by the way i took the car to nor cal customs aj plugged it in his computer and the codes were maf air codes egr map sensor. i changed the maf the map. checked everything else hooked the egr up cuz i had no vacum hooked up to it. so there is 2 vacum lines still not hooked up but they are are plugged because i have no smog pump.
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If You Want More Inches - Stroke It!!!
Mystery stang in the works..
Posts: 1602 | Registered: Jul 2007
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VENOMUS PONY 5.0
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Member # 7785
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posted
act sensor whear is that on the manifold and what purpose does it have?
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If You Want More Inches - Stroke It!!!
Mystery stang in the works..
Posts: 1602 | Registered: Jul 2007
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93coupessp
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Member # 8418
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I would tightin up that spark plug gap a lil bit try the 40 to 45 range gap
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89 gt project
09 f250 diesel 605hp
14 cts-v
13 harley fxdb 103ci
Posts: 1919 | From: Hell | Registered: May 2008
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VENOMUS PONY 5.0
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Member # 7785
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posted
tttttt
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If You Want More Inches - Stroke It!!!
Mystery stang in the works..
Posts: 1602 | Registered: Jul 2007
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VENOMUS PONY 5.0
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Member # 7785
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posted
so got a act sensor from 68stanger and he also told me about the fuel pressure regulator i never even thought of that so going to swap those out today and lets see if those 2 things fix my issue...?
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If You Want More Inches - Stroke It!!!
Mystery stang in the works..
Posts: 1602 | Registered: Jul 2007
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Nastysvt
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Member # 6431
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im going through the same exact thing on my cobra. i cant figure it out. changed the plugs, wires, coil packs, and checked all the grounds in the voltage controller for the fuel pump and the grounds on the battery terminal. Car has regular voltage, and fuel pressure. Im thinking a bad ground from the starter relay or something in the wiring?? let us know what the problem is when u find out. hopefully that could help me.
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Built 98 Cobra
Built C6 Z06
Daily TBSS
Posts: 2575 | From: Valley to the Bay | Registered: Jan 2006
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VENOMUS PONY 5.0
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Member # 7785
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posted
no luck yeat today is monday going to wrench on it... swaping out out the sensor and fpr will keep u guys posted for sure.
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If You Want More Inches - Stroke It!!!
Mystery stang in the works..
Posts: 1602 | Registered: Jul 2007
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2T0NE
Go 49ers
Member # 4216
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posted
Ok...ill be home at 3
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Originally posted by x Raelsmar x:
Can't wait till the Giants lose tomorrow night so all you Giants fans are forced to shut the fuck up.
Posts: 14676 | From: 760 carlsbad | Registered: Mar 2004
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VENOMUS PONY 5.0
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Member # 7785
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posted
so like i guessed that didnt help my issue out. changed out fuel pressure reg and act sensor and still nothing. plus i went ahead and dropped the gas tank checked the baffle on it and that is still solid tack welded in place. swaped out the fuel pump still nothing. SO AWHILE AGO I BROKE LOWER INTAKE MANIFOLD BOLT. THE ONE IN THE BACK OF THE MOTOR BY THE BELLHOUSING YOU GUYS THINK THAT WOULD MAKE MY CAR RUN THE WAY ITS RUNNING.....?( its been like that for over a year without any issues just thought i would throw it out there) IF THERE IS ANYTHING ELSE I MISSED FELLAS CHIME IN AND PUT YOUR TWO CENTS IN ANYTHING HELPS.
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If You Want More Inches - Stroke It!!!
Mystery stang in the works..
Posts: 1602 | Registered: Jul 2007
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2T0NE
Go 49ers
Member # 4216
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posted
I say we think about this problem more carefully over some kabobs???
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Originally posted by x Raelsmar x:
Can't wait till the Giants lose tomorrow night so all you Giants fans are forced to shut the fuck up.
Posts: 14676 | From: 760 carlsbad | Registered: Mar 2004
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