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car stall/erratic idle - 6G Celicas Forums

Topic #74258 46 posts Started by SleekCelica
So when I first bought this car, it had a really bad erratic idle, that would drop down to 0 and bounce right back up in a matter of a second, and keep doing this. It would flicker, and then stall. It's not fuel related. It'll actually stall when I'm driving and then not start back up. I replaced the ignition coil and all was fine. Now, three months later, it's doing this again >:( What do you guys think? It's throwing a 12, 13, and 41 codes. Could these all be related to the 41 (TPS?)

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.
distributor.

Former Team 5SFTE pro member ;)13.6@108MPH, 5SFTE Powered
Do you think so? I figured 12 and 13 were leaning towards that, and 41 is obvious, so dizzy and tps?

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.
Ok, so normally when I start my car it revs to ~ 1500 rpm and then drops to normal idle of about 750 on the first turn. Starting last week though it's been starting weakly at about 750. I had the fuel filter, cap, and rotor replaced yesterday but when I tried starting the car this morning it turned but didn't catch...just died. Upon turning the key and pressing the gas it fired right up like normal.

So my question is...do I need to replace the distributor?

Has no more Celicas
pull a spark plug, attached to a wire, ground it on the valve cover, disconnect the igniter, have a friend crank the engine, and check for spark. Blue= good spark, yellow= not so good, none= broken.

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.
u wont get a spark with the ignitor unplugged

QUOTE"And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH1994 GT:V6 swap, 5speed E53 W/ LSD, All Power, now RED1995 ST:SOLD @273k miles, Auto, all power, CarPC, White1994 ST:Totaled, 5spd, all power, RedRIP 07/09/09 @ 241,8101994 Lexus LS400:This is my new DD
oops, didn't mean to put that, was thinking about something else. Leave igniter connected. just bump it though, don't start it

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.
clean your throttle body throughly with TB or CARB cleaner, and try again

>
QUOTE (Keiri @ Jun 6, 2010 - 10:03 AM) *
>Ok, so normally when I start my car it revs to ~ 1500 rpm and then drops to normal idle of about 750 on the first turn. Starting last week though it's been starting weakly at about 750. I had the fuel filter, cap, and rotor replaced yesterday but when I tried starting the car this morning it turned but didn't catch...just died. Upon turning the key and pressing the gas it fired right up like normal.

So my question is...do I need to replace the distributor?


pull your EFI fuse for ~ 10 min, if that doesn't correct your problem, replace the dizzy && adjust your TPS.

>
QUOTE (SleekCelica @ Jun 5, 2010 - 11:17 AM) *
>So when I first bought this car, it had a really bad erratic idle, that would drop down to 0 and bounce right back up in a matter of a second, and keep doing this. It would flicker, and then stall. It's not fuel related. It'll actually stall when I'm driving and then not start back up. I replaced the ignition coil and all was fine. Now, three months later, it's doing this again >:( What do you guys think? It's throwing a 12, 13, and 41 codes. Could these all be related to the 41 (TPS?)

QUOTE"And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH1994 GT:V6 swap, 5speed E53 W/ LSD, All Power, now RED1995 ST:SOLD @273k miles, Auto, all power, CarPC, White1994 ST:Totaled, 5spd, all power, RedRIP 07/09/09 @ 241,8101994 Lexus LS400:This is my new DD
>
QUOTE (stephen_lee @ Jun 7, 2010 - 10:21 AM) *
>clean your throttle body throughly with TB or CARB cleaner, and try again

>
QUOTE (Keiri @ Jun 6, 2010 - 10:03 AM) *
>Ok, so normally when I start my car it revs to ~ 1500 rpm and then drops to normal idle of about 750 on the first turn. Starting last week though it's been starting weakly at about 750. I had the fuel filter, cap, and rotor replaced yesterday but when I tried starting the car this morning it turned but didn't catch...just died. Upon turning the key and pressing the gas it fired right up like normal.

So my question is...do I need to replace the distributor?


pull your EFI fuse for ~ 10 min, if that doesn't correct your problem, replace the dizzy && adjust your TPS.

>
QUOTE (SleekCelica @ Jun 5, 2010 - 11:17 AM) *
>So when I first bought this car, it had a really bad erratic idle, that would drop down to 0 and bounce right back up in a matter of a second, and keep doing this. It would flicker, and then stall. It's not fuel related. It'll actually stall when I'm driving and then not start back up. I replaced the ignition coil and all was fine. Now, three months later, it's doing this again >:( What do you guys think? It's throwing a 12, 13, and 41 codes. Could these all be related to the 41 (TPS?)



Stephen,

I'm guessing the line above my post is directed to me; the throttle body was cleaned last year...should I still do it again?


Has no more Celicas
keiri, yes the line above it directed at you.

clean the TB, make sure your vac lines are still ok. are you having any drivability problems?

QUOTE"And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH1994 GT:V6 swap, 5speed E53 W/ LSD, All Power, now RED1995 ST:SOLD @273k miles, Auto, all power, CarPC, White1994 ST:Totaled, 5spd, all power, RedRIP 07/09/09 @ 241,8101994 Lexus LS400:This is my new DD
>
QUOTE (stephen_lee @ Jun 7, 2010 - 2:25 PM) *
>keiri, yes the line above it directed at you.

clean the TB, make sure your vac lines are still ok. are you having any drivability problems?


No drivability problems; once she starts she's fine. The first 5 minutes or so of driving the car is at a higher RPM until it warms up and then it drives like it's been driven all day.

The only problem I found on the vac lines was the little connector at the rear of the stock intake has a couple really small hairline cracks at the top of the tube radiating out from the middle.

Has no more Celicas
Reviving an old thread- my car's still doing this. I replaced the ignition coil now. It's no longer throwing the 41 code, but in place of that it's throwing a 14. It's all ignition system now. I have 5 different igniters and they all do the same thing, so I'm thinking it's not that.

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.
its the distributor, like i said in the first reply after your first post. thumbsup.gif

Former Team 5SFTE pro member ;)13.6@108MPH, 5SFTE Powered
Now, to be sure, and I'm not doubting you in the least; just giving you more details. This is an intermittent problem, sometimes it'll drive for a week and be fine, and then the next day it won't start, or it will start and the rpm's will be incredibly unstable. I probably should have told you this in the first place. Is it still the distributor?

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.
>
QUOTE (SleekCelica @ Jul 3, 2010 - 6:46 PM) *
>Now, to be sure, and I'm not doubting you in the least; just giving you more details. This is an intermittent problem, sometimes it'll drive for a week and be fine, and then the next day it won't start, or it will start and the rpm's will be incredibly unstable. I probably should have told you this in the first place. Is it still the distributor?


yeah same happened to me it was overheating till i replaced it and all was good again
I really hope this is the problem.... will one off a camry 5s work?

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.
>
QUOTE (SleekCelica @ Jul 3, 2010 - 6:51 PM) *
>I really hope this is the problem.... will one off a camry 5s work?


should i got mines off a rolla
Cool, I'll let you guys know how this works out on monday

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.
Bought a distributor from checkers auto in oklahoma... It said MR2 distributor, non turbo, so I got it shipped to me. Not only was it not for an mr2, it was from a 6 cyl Mazda "mr3" I'm pretty sure mazda doesn't make a 6 cylinder "mr3"

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.
>
QUOTE (SleekCelica @ Jul 21, 2010 - 4:33 PM) *
>Bought a distributor from checkers auto in oklahoma... It said MR2 distributor, non turbo, so I got it shipped to me. Not only was it not for an mr2, it was from a 6 cyl Mazda "mr3" I'm pretty sure mazda doesn't make a 6 cylinder "mr3"

?

ouch hope u getting ur money back
totally found you on the toyota fan page on facebook... hahah

>
QUOTE (SleekCelica @ Jul 21, 2010 - 3:33 PM) *
>Bought a distributor from checkers auto in oklahoma... It said MR2 distributor, non turbo, so I got it shipped to me. Not only was it not for an mr2, it was from a 6 cyl Mazda "mr3" I'm pretty sure mazda doesn't make a 6 cylinder "mr3"

QUOTE"And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH1994 GT:V6 swap, 5speed E53 W/ LSD, All Power, now RED1995 ST:SOLD @273k miles, Auto, all power, CarPC, White1994 ST:Totaled, 5spd, all power, RedRIP 07/09/09 @ 241,8101994 Lexus LS400:This is my new DD
That's awesome. I love this car that much that my profile pic is her! My friend just wrecked her celica, and I get to farm it for parts, so I get the dizzy tomorrow! biggrin.gif

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.
I can't find a new one, so I suppose i'm screwed lol

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.
I'm going to end up buying one from autozone. I get a discount there, plus it's cheaper b/c of the core.

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.
So... the distributor didn't fix it. Still does this. Any ideas?

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.
When mine was like this, it ended up being the distributor...but I spent months fixing other things before I found the real issue. It would get better as I go, but not completely fixed. Possibly you have the same issue.

Check your TPS gapping, and make sure it is placed correctly on your throttle body. I had that issue and had to replace my position on it, even though your engine is not the same, i'm can assume they function in the same matter...

I changed fuel filter, plugs, wires, and distributor. I checked fuel pressure on the top of the filter first to confirm it wasn't fuel, it appears you have spark, but your timing may be off. I would confirm the basics first...fuel, air, spark. It could also be as simple as a sensor being bugged out from past research, or a simple skipped tooth or broke tooth on a cam gear. Or, you just didn't put your distributor in the correct position...which I can't explain how to do, but I'm sure effects timing and such, which requires a timing stobe to correct...? Sorry, just throwing you some ideas! Hope they help.

This post has been edited by rave2n: Jul 22, 2010 - 8:58 PM
At this point, I've pretty much narrowed it down to something between the distributor and the ECM. It's throwing codes 12 and 13, so I'm getting intermittent spark, and when I'm not, it shuts off fuel. I've replaced the distributor, so it's gotta be a problem with either the wiring, or the ECM. I'll replace the ECM, and if that's not it, I'll replace the harness. If that doesn't fix it, I'll save up for a dang 3sgte, lol.

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.
>
QUOTE (SleekCelica @ Jun 5, 2010 - 11:17 AM) *
>So when I first bought this car, it had a really bad erratic idle, that would drop down to 0 and bounce right back up in a matter of a second, and keep doing this. It would flicker, and then stall. It's not fuel related. It'll actually stall when I'm driving and then not start back up. I replaced the ignition coil and all was fine. Now, three months later, it's doing this again >:( What do you guys think? It's throwing a 12, 13, and 41 codes. Could these all be related to the 41 (TPS?)

Does the problem happen at idle or after you've driven it for awhile ??

12 and 13 Code- Distributor or ECU could even be the wires that are bad

41 Code- Faulty TPS Sensor not functioning properly, when you get the idle problem again unplug the connector from the tps sensor and see if that helps, the car will run without it connected too btw but it would throw the check engine light though but if it runs better you know thats your problem.

Dont just start replacing parts thats the worst way to diagnose your car.

"To Protect And To Serve The Wealthy" -POLICE
I'm not going to just start replacing parts. I've just already replaced the distributor, and it's still throwing me 12 and 13. It's not throwing me 41 anymore, which is wierd, and it's not throwing me 14 anymore. I"m going to replace the ECM next, because that's all I can think to do.

1994 Celica GT, coupe, 5 speed.Front strut brace, cherrybomb glasspack, intake.