Ok guys im new to the mustang world. I finally decided to get rid of my turbo eclipse and go back to a V8. 0n 97 i had a 91 firebird. anyways today i go to start my car and it started then died right away. so i started again and it started idled funny and low then died. did this a few times. finally i got it started enough to where i can hold the gas down to around 1200 rpms for about a minute and then it idled fine but when id rove it it felt like it didnt have full power and it sounded funy through the exhaust. And sometimes when i stepped on the gas it felt liek it would hesitate for a second. first diea was bad gas so i put seafoam in it but its still doing it. anyone have any other ideas? im going tomorrow to look at changing the plugs and wires. by the way i have a 95 gt with a procharged 347 stroker. any help is appreciated and guys im new to V8's again so cut me a break please.
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Car is running weird
- Thread starter boostedGT
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justinschmidt1
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Any engine lights?
Check all the vacuum lines....
could be 02 sensors, they would make it run rich and you would be down on power and run shitty
Check all the vacuum lines....
could be 02 sensors, they would make it run rich and you would be down on power and run shitty
Thanks yeah i just bought the car last month and the guy jus put the motor in it. its a dss racing 347 stroker with an x303 cam and a procharger. it has all new fuel system from pump to injectors. new msd ignition new O2 sensors and all. its running really rich cause when i get on it u can smell the gas so i was wondering if maybe one of my plugs fouled out from the richness. not 100% sure. but i could always replace the O2's again and go from there. it only has 2 sensors both on the long tube headers before it connects to the xpipe. i also read on other threads to check the maf and use fuel stabilizer. i already seafoamed the tank so tomorrow im going to check out the maf clean it up and then add fuel stabilizer to it and go from there.
Thanks ill never go to 4 or 6's again unless i need a beater that i can crash and not care that day will involve a freakn honda! lol. anyways im throwing no codes and it has 40lb injectors. not sure what brand. will have to call the shop that the previous owner had do all the work. i dont think it has a chip or tuner. no paper work on it but the maf is an SCT flash. never heard of them but then again im used to turbos and DSMlink.
Also i forgot to tell you i run 93 in the car. howeve ri put 93 in last night at sheetz and ever sicne today the car has run like shit i even ran it good last night after the gas and no problems. today when i started it it kept dying on my like it wasnt getting enough fuel or getting to much and it took me 15 mins to get it to stay running. any idea on that? my dad says it sounds like bad gas
alright, well, that is something to go on. and I drive a 2 cylinder when it is warm. its attached to a bike though. the winter ride is a Olds 6 cylinder.
Sounds like your car definitely has a tuner, as these cars wont run well without one when modified, esp with the mods listed above. I bet its a simple tune-up item that went south, like a dirty maf. heres how to clean!
Well, I would pull your MAF, and look inside for two silver wires. DO NOT TOUCH THEM!!! thats important. I would mix up a solution of simple green and hot water, just enough simple green to make it stoplight green, and use a spray bottle to spray the wires down until they are clean. rinse well with hot clean water, and let dry. dont worry too much about getting water in the electronics, they are sealed. make sure the sensor and housing are dry before you use it. YOu can use hot water only if you need to, or checker auto sells some cheap aeresol cleaner to spray on it. it is paramount to get all the cleaner off the wires, but a good rinse will do the trick.
That is where I would start. also, check your timing, there is a small grey pill you have to pull out of the harness in the fender when you do. base timing should be 12-14 btdc. let me know if the harmonic balancer wobbles fore and aft.
I hope this helps, and if it doesnt,lemme know.
Sounds like your car definitely has a tuner, as these cars wont run well without one when modified, esp with the mods listed above. I bet its a simple tune-up item that went south, like a dirty maf. heres how to clean!
Well, I would pull your MAF, and look inside for two silver wires. DO NOT TOUCH THEM!!! thats important. I would mix up a solution of simple green and hot water, just enough simple green to make it stoplight green, and use a spray bottle to spray the wires down until they are clean. rinse well with hot clean water, and let dry. dont worry too much about getting water in the electronics, they are sealed. make sure the sensor and housing are dry before you use it. YOu can use hot water only if you need to, or checker auto sells some cheap aeresol cleaner to spray on it. it is paramount to get all the cleaner off the wires, but a good rinse will do the trick.
That is where I would start. also, check your timing, there is a small grey pill you have to pull out of the harness in the fender when you do. base timing should be 12-14 btdc. let me know if the harmonic balancer wobbles fore and aft.
I hope this helps, and if it doesnt,lemme know.
Thanks man and i have the SCTflash MAF in the car and i took it out earlier blew on it looked at it and it looks freakn brand new so i put it back in and the car fired right up and once the cam warmed up it idled right where it should so who knows. maybe i did get crappy gas but im taking it out later since its 70 today and ill see how it does on the road then il get back to you but i know its running really rich. onc ei get new plugs and wires in im getting it tuned at a nothing but mustang dyno and tune shop. so im sure theyll know what exactly to do. thanks for all the help.
youre welcome. im glad it straigtened itself out. sometimes disconnecting the battery, stepping on the brakes a few times, turning on the headlights, turning everything back off and connecting the battery will do the trick. it clears the stored memory in the car, letting it "learn" the car again.
Well todayt it started to run decent then act up again. i went up a steep hill to my buddy's and it wasnt full power. got to his house and it had a very tiny bit of smoke coming from the dipstick. coem to find out the dipstick has to big holes in it. going to jb weld them until my new one i ordered gets here. second issue arose when i found oil along the bottom of the passenger valve cover above the header and a little oil on top of the tranny. then i also found 2 little puddles of oil right by the distributor. so i have no idea. i have a small air filter on on valve cover where the pcv hose goes and another air filter on the pcv valve instead of having the hose ran. this was per suggestions from procharger cause of all the boost in the intake from the SC. so i dont know if i clean it all up and go from there or start taking crap apart. so im going to work on the new brakes and suspension until my other buddy is free to take a look at it. like i said im new to the V8 world again. its been since 2001 i had a V8 so i have to get back into the swing of things. i just hope its minor and not having to take crap apart. on a good note my cobra r hood bumper and saleen spoiler get painted this weekend and will be ready next week to put on. well ill be posting pics of the all the progress on my myspace.
www.myspace.com/boostedgtr1
www.myspace.com/boostedgtr1
ok i appreciate it. i dont know what other route to go with the pcv system casue of the procharger. they said if i route the pcv system liek factory that it will cause internal damage due to all the boost and im only running 8 lbs. they said i can hose the factory hose and put a T spilt in it and connect the valve cover outlet to the pcv then vent to the atmosphere or i can do the mini air filter. i decided to go that route. but crap im lost on that issue but i have oil in it and i have good oil pressure according to my gauges. im still lost on why i lost power over night. i have 1/4 tank of the gas i got and when its on E and the light comes on im goign to fill it up with exxon or bp premium and add cleaner and stuff and then tune it up and see if that helps. i guess my one buddy is right. anytime u hook up an engine it will always give u grief.
No the guy i bought it off of has an msd blaster coil and msd 6a box. but only thing fuel wise is a 255 pump 40 lb injectors and a bbk regulator but no gauge. what should i normally run at pressure wise? ill order a gauge from bbk tomorrow. and everything from fuel system to clutch to motor is all new has 3000 miles on it. like i said when i mash the gas and get on it u can smell the fuel big time so i knew i was running really rich. u think that might of messed up the O2's and the plugs which is now causing it to run like crap?
Dont get the BBK gage, just go to checkers and get the cheapo one that plugs in to the schrader valve on the rail, and is not permanent. I had one permanent on the car, and it started leaking, and I couldnt get it sealed up. your fuel pressure should be about 28-32, if I remember correctly. I can look in my manual and let you know.
where is the schrader valve located at. liek i said im new to the v8s and im wondering whats up with it to. im just wondering if the head gaskets are going bad already. i noticed today after running the car that my antifreeze overflow bottle was 3/4 full but none leaking that i noticed. my aim is koldiron33
1GaDrifter
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i had the same problem with my 98 gt. it had a 5.4 but still its pretty much the same as a 4.6 i would check the mass air flow first, then your vacum hoses on your intake because mine popped of one time and ran like crap, or it could be an O2 going bad ,i had one go bad and it ran good sometimes but the spit and sputtered randomly, o check your coil packs too they can make it hesitate. Hope that helps
umm, he's got a 347, thats a pushrod motor.
sounds like you need to start at the basics and stop driving it.
pull the plugs and admire how wet they are, replace them, check the timing, look up the oil separator mod that uses the industrial catch can, run that in place of the valve cover breather. if the car is running that rich that you can smell it while driving you probably need to change the oil. check the fuel pressure w/ it idling and if you have enough hose you can tape the gauge to the windsheild and drive down the block to see what it reads under a load, report that back to us.
also, becareful running fuel additives and driving the car hard, they can play w/ the effective octane level.
sounds like you need to start at the basics and stop driving it.
pull the plugs and admire how wet they are, replace them, check the timing, look up the oil separator mod that uses the industrial catch can, run that in place of the valve cover breather. if the car is running that rich that you can smell it while driving you probably need to change the oil. check the fuel pressure w/ it idling and if you have enough hose you can tape the gauge to the windsheild and drive down the block to see what it reads under a load, report that back to us.
also, becareful running fuel additives and driving the car hard, they can play w/ the effective octane level.
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