car starts only with gas pedel to floor but sputters than stalls within a few secs

Got spark and starter fluid is used and no combustion occur-recheck the ignition system and also the fuel pressure

my car is a 97 sunfire 2.2 an i took out ignition moduler an coils an had tested at advance it failed 3 stages so i got a new ignition moduler an coils also i replaced the crank sensor and spark plugs an still the car starts only with pedel to floor an runs ruff an dies although now it does run a few secounds longer lol idk gfot my auncle to bring back ob 2 scan tester to check for codes now only one code last p0121b which is for throttle body sensor but im told by my auncle reguardless it should run with or without the tbs working so we both puzzled an my auncle a head mechanic also i will add while starting car there is a smell of gas like maybe its geting flooded which explains why i got to hold gas pedel to floor to even start it but lost dont know what to do

Check the coolant temperature sensor and fuel pressure

coolant temperture good dont have a way to check fuel pressure but have replaced fuel filter an while it was off did turn key to make sure the pump was pumping fuel an it did i also now replaced the throttle postion sensor since i got code p0121 but no change am i expost to clear the code p0121 after installing tps to get new one to work or should it automaticly work

Try clearing the code if it continues to comeback adjust the TPS voltages and again check the fuel pressure -

my car has a tps that cant be adjusted but my auncle did test voltage an was told it was normal an so was my fuel pressure so realy dont got a clue what to do guess my auncle wants me to try another igntion moduler one i put on it was used but off a car that ran so unlikely its the problem but got nuttin better to try

also just cleared all coded with a obo 2 computer an the p0121 (tps)hasnt came back but yet the car still doing same thing after i put new crankshaft new tps new fuel filter an used good ignition moduler so now no codes but car still only starts with pedel to floor an than barely runs very low rpms for 30 secs till it stalls only thing i thought of but hadnt tryed was a compresstion test but everyone insisting that aint the problem

Give me a fuel pressure readings before I continue to respond

i should add one thing i got a ignition moduler off my aucle that was took off a used engine that ran an since i was lost couldnt find out why it aint running i took the used moduler to advance they tested it an said it failed two things idk my original one failed 3 things got another one from my auncle an it failed its weird they both came off runing cars is advance test wrong or do i just need to spend the 300.00 for a new moduler i realy dont got 300 bucks to spend but if thats what it takes to fix my car than i got no choice but weird thing is i have spark an everything with all 3 igntions i tryed if it was realy bad it just seems like there should be spark my car shouldnt start at all

sorry the fuel pressure was 43 with the key turned to the on postion

Just to add to this if you have spark i would say the ignition module is working atleast at that point.You need fuel pressure and injector pluse to run.So you said you the correct voltage for the tps.Are you taking about the 5 volt refrence going into it?If so you still have to see what it reads back to the computer with a closed throttle wide open throttle etc.If i were you i would be trouble shooting that tps code first.

well i deleted all code tryed to start it checked codes all that remained was igntiol moduler 24 times red circut too many pulses deleted code tryed agiain code came back tryed starting it with starter fluid because today is a realy warm day but stil;l didnt start i checked for spark its dark outside an seen all spark plugs has gret spark i finaly got to check comnpresstion comprestion is good every cylinder was 150 while trying to start sp compression is good so i check obo2 again even after trying to start car for over 2 hours no new codes except the one i stated at begining of message but at least the crankshift sensor an tps codes aINT COMEING BACK SINCE BOTH BEEN REPLACED now i am waiting for my auncle to bring a noid light to check injector pulse i will be able to tell you how that goes real soon

So what is the exact code number you have now?

well did the noid light on the injectors and they pulse an work good so thats good an the obo says the following exactly word for word ( ignition coil module 24 times red circuit to many pulse ) so what does that mean i tryed searching the internet about what its saying but had no luck

You are reading me the code description. What is the exact code number?It will be a P followed by a four digit number?Thats what i need from you to get you a trouble tree for it.

well i had a guy at advance use the proper way to test the igntion module an it passed perfectly so i got new coils no change as far as the code ill have to get that from my auncle i only wrote down the discription next to the code an i was talked into buying a new fuel pump reguardless the pressure was tested an was good but of course it didnt change things i will get you the igntion code as soon as i can

I thought I'd add a few things befor car died it use to stall randomly about 1 or 2 a month but would start an run great afterward also when I got the car a year ago the antifreeze looked real dirty water I changed it a few months back an it been green ever since two question I got could I have a blown head gasket or a timeing belt tentioner problem them both was my first though befor having it looked at an was told that most likely ain't the problem since I was getting codes an everything else I check was good as far as spark fuel an compression so I don't know what to do next I know you want the ignition module code an I will have you it soon as I talk to my auncle but was hoping to get a answer on a blown Moter or timing chain basically would it start at all if it's blown gasket or if the timing chain tentioner is broke an how do I check these two things or would both my ideals be a waists of time

A compression test would tell you how the timing was.The code i think you have is for the crank sensor.Get me that code and let me know what it is and we will go from there.

I orIgaly had a p0121B witch was a crankshaft sensor It was only ten bucks so I replace it an the code never came back so far orIgaly I had a p0121b crankshaft sensor a Po335a tps sensor an the code that says ignition modules coil 24x r circuit too many pulse so far I change tps cranksensor ignition module coils fuel pump I had fuel pressure at 42 had compression 150 each cylinder an so far still same problem only starts with pedal to floor an runs at extremely low rps while still holding pedal to floor than it stall the crankshift an tps codes is code but the unknow code that says ignition coil module 24x r circuit too many pulses I got good spark good compression an good fuel pressure I also noir check the fuel injector an it also works perfect I don't know what to do next or where to go I did look up code definitions an by description the code should be p1370 which says ignition control modular 4x ref too many pulses when is the dame discription as mine except mine is 24x instead of 4x I assume it has to be that code no other says anything about too many pulses an the circuit part so if that will help u help me if not I'm still trying to get ahold of my uncle to get the forsure code basically everthing on my car is bran new or texted to be good except water pump timing chain alternator an a few sensors like map an another one

Also I Would like to think u for all ya help so far my car might not be fixed but at least I ruled out slot of things by now I wish I would of junked the car for 300an used the 700 I spent in parts an I would of had a 1000 to spend on a car well now I really got no choice but to fix I spent 1000 for it put 1500 in it to pass inspection only to break down an put 700 in it an still same problem I had a month ago I know I'll never buy another sunfire parts expensive on it an it's a money pit but hope to here what ya think after reading my post befor this one think you so much I am greatful

Also if i donate for ya help once car is fixed do u get this or does it help u in anyway

Yes if you donate i will get credit get me that exact code number you have and we will go from there.

My uncle said it said po121b with description ignition coil module 24x too many pulses I looked code up but it says crankshaft censor not the description the obo2 said so is it possible to have a code p0121b with the description that came after the code if not I'm just gonna have to have my uncle come back out with obo2 but everytime he wrote down the codes an what it said after code an he had that code with description wrote down twice that he brought the obo out to try the first time I had p0121b an p0335a after I replace crankshaft sensor one of em codes never came back but the other still remains an says ignition module 24x red curcit too many pulses

Lets get the codes checked again and let me know the exact code numbers and we will go from there.

My auncle bringing obo 2 back out to see what the code is for the ignition module but you stated a few messages ago that compression would tell me how my timing was so since I got 150 each cylinder than my timing chain is fine the question I got is if my timing chain tentioner is worn an if the chain skiped teeth should the compression show that or does compression only show that the Chain hadn't broke basically would my car act like it does if the chain skiped teeth thanks for ya help

If it jumped a tooth or two a compression test wont tell you that.Lets get the exact code you have now and we can follow the trouble tree for it.

ok bout to call my auncle to bring obo 2 out to check for codes again also im going to go buy a haynes book to check the tentioner an timeing chain let you know the code in a few

i have the obo 2 hooked up right now the only code that is showing is an it has a defition next to it saying igntion coil modulke 24x red curcut too many pulsesi i looked up the code p0121 but the definition i see online for it is says throttle position sensor/ switch a circuit range/ preformance problem so now i gave you the exact code the obo 2 is showing hope it helps but why would the the obo 2 tool show a diffrent defintion than what i find online an the obo 2 im useing is the one middle creek garage uses my auncle is one of the head mechanics there an the obo 2 is realy expensive a few grand i think an the update on it cost 1,400 it just got updated so while i got the obo 2 here an my auncle is here is there n e thing else i can be trying its hard to get my auncle to ever come look at it an my auncle out of ideals because everything he checks for turns out to be good

Feb 10, 2012 at 1:12 AM

That code is for the tps sensor i posted the trouble tree for it follow it and let me know what you find.

Well think I got the problem had plugs out an turns it over gas shot out the first three spark plugs holes I cleaned spark plugs put em back in took out fuel pump fues an tryed to start it with starter fluid an in the first time in awhile I got it to finally run as long as I kept spraying fluid it kept runing so guess my fuel injectors was flooding my car so bad it barely starts an an stall out because of all the fuel so what do I do now my injectors is getting pulse so do I need to replace the four I injectors or what

From the car not starting that is probably why the cylinders filled up with fuel.What did you find following the trouble tree i posted for you.

I haven't got back the obo tester to use again but I have a volt tester an do have the 5 volt going to tps an ground is also good still waiting for obo2 to do the other test on the tree but also what I found is if I disconnect the fuel pump fuse I can start car an keep car runing great by spraying starter fluid sprayed in air Intake as soon as I plug back in fuel pump fuse it than runs horribly for a few secs an stalls an spark plugs get covered in fuel

Whats your fuel pressure reading?

I had a similar problem and it turned out to be the idle air control valve. If this doesn't work properly you won't have the right air fuel ratio at idle.

It wouldnt be the correct air fuel ratio that doesnt control the air fuel ratio.What it does is allows the computer to create a vacuum leak that it can change to control the idle behind the throttle plate.Then throttle by wire throttle bodys came out and they didnt need the idle air control valve anymore.Because the computer then controled the throttle plate.

My fuel pressure is 42 I cleaned off idle air control valve map sensor an still no change

So what did you find following the trouble tree for the tps sensor i gave you?

I followed trouble tree an it has correct voltage with pedel to floor an when pedel isn't pushed all the wires look good do u think maybe it's just the computer or is that ok because voltage is correct my uncle ( head mechanic at middle creek ) gave up said it probly just throwing a faul code an the problem is injectors or computer an I don't know how to test injectors except with a noir light an it pulses so I basically been stuck not knowing what to do I followed the tree twice just to make sure I followed it right I got a question if injector stopes spraying a mist an is just squirting out would that thro a code is it possible it could throw a tps because it's looting to much gas in cylinders

So you did a full throttle sweep and watched the voltage on the scan tool and it was correct on the voltage for pedal position?