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hellsyphon
12-03-2004, 07:39 PM
Hi, I'm new here and I have a problem. I have a 1994 Toyota Celica GT. When I start the car in the morning and it's about in the 40's-50's the engine starts and revs to about 1200rpm and then it dips back down and dies again. The only way to keep the engine going is if I rev the engine at about 3000rpm for about 2 minutes. Once the engine is warm everything runs fine tho. Do you guys have any idea what is wrong?

imac
12-03-2004, 08:31 PM
could be an air or fuel sensor. if one is broken it will often cause the car to idle wierd. but before you go into anything technical, i would make sure you are not running any accessories while your car is warming up. 40 deg isnt that cold, but if you are trying to run the heater or defroster then it will cause the idle to drop while the engine is cold.

Luni
12-03-2004, 08:40 PM
Your autochoke is failing or your cold start circuit (which I think controls the autochoke) is failing, or your engine temp sensor is failing, or you have a TPS problem, or one of a bunch of other issues.

Pull your codes and see if you are pulling anything.

Bridge your TE1 and E1 terminals in your diagnostics box in your engine compartment and turn the ignition on, the CEL will flash in a sequence. If its just a constant steady flash theres no codes. Otherwise you will get like a (and this is an example) flash, flash, pause, flash - that would be a code 21. You get my drift? Pull your codes and post findings here.

Hooligan
12-03-2004, 09:02 PM
Sounds like a sensor to me too. 92+5SFEs don't have a cold start injector, so they must achieve the same result through some sort of control strategy.

Check your codes like Luni says. If that doesn't net anything, it's time to get out the multimeter and start to check sensors.

Blackcloud
12-03-2004, 11:29 PM
40-50deg is cold? hehe


but im with the other guys

corvelx
12-04-2004, 12:23 AM
My car occasionally will stall out when I am starting it up in very cold weather (10 degrees F). I've done a diagnostic test myself and it blinked normal. I always thought nothing was really wrong with my car.

hellsyphon
12-04-2004, 07:21 PM
Well I live in socal and 40 is about as cold as it will get. How exactly do I bridge those terminals? I dont want to screw up and blow up my car

Blackcloud
12-04-2004, 07:25 PM
i know mine is a cold blooded slut when its damn cold outside.. like 20deg and colder. will stall out unless its had its chance to warm up.

Slider
12-04-2004, 10:11 PM
I had a problem like that on my 88 maxima, there was a valve that was supposed to open when it got cold in order to give the engine more air so it would idle higher, the valve was stuck closed so it would idle real low and stall.

Something is wrong though, when it's cold on my 90 5sfe jumps up to 2000RPM. I would check all your vacuum hoses just to be safe, it can never hurt.

Never checked to see how the 5sfe does the high idle, is it by ECU? I'll see if there's anything about it in the Hayne's manual.

mikeswickednick
12-04-2004, 10:56 PM
Well I live in socal and 40 is about as cold as it will get. How exactly do I bridge those terminals? I dont want to screw up and blow up my car


if its anything like the mr2 (witch i belive it is) you just use a paper clip

mikeswickednick
12-04-2004, 10:57 PM
I had a problem like that on my 88 maxima, there was a valve that was supposed to open when it got cold in order to give the engine more air so it would idle higher, the valve was stuck closed so it would idle real low and stall.

Something is wrong though, when it's cold on my 90 5sfe jumps up to 2000RPM. I would check all your vacuum hoses just to be safe, it can never hurt.

Never checked to see how the 5sfe does the high idle, is it by ECU? I'll see if there's anything about it in the Hayne's manual.

its just to help it idel my turbo and NA both do it when its crazy cold in nj

hellsyphon
12-04-2004, 10:57 PM
does anyone know how to bridge those terminals? i dont know how to bridge them and im afraid im gonna blow something

MoralWarfare
12-04-2004, 11:35 PM
paperclip. or any piece of thin metal that fits.

Luni
12-04-2004, 11:51 PM
Yep just use a paperclip.

TRDmkII
12-05-2004, 03:46 PM
it could be a few things, cold start time switch...cold start injector, or your idle speed control valve sticking.....allowing too much air in while the engine is cold....i'd start with those three things.

hellsyphon
12-05-2004, 11:08 PM
ok i used a paperclip and when i turned on the engine is the check engine light supposed to go on and just keep on flashing?

carlosfandango
12-06-2004, 01:04 AM
someone help this guy, i dont know enough as i aint done this. but i will be doing it tomorow so i'll need to know aswell.

Hooligan
12-06-2004, 02:39 AM
ok i used a paperclip and when i turned on the engine is the check engine light supposed to go on and just keep on flashing?

If it just flashes constantly, then you have no codes. If it flashes with a particular pattern, it is outputting a code.

There are webpages with warning codes listed, but I can't seem to locate them right now. Anyone else?

Dr.Auto
12-06-2004, 04:26 AM
see if this helps
http://alldatapro.com/alldata/PRO~V15004062~C19058~R0~OD~N/0/41746445/41746449/41746476/41746477/34853741/34857029/34857030/34857663/34850217/100598851/103888791/100941116
http://alldatapro.com/alldata/PRO~V15004062~C19058~R0~OD~N/0/41746445/41746449/41746476/41746477/34853741/34857029/34857030/34857663/34850217/100601654/106392379

hellsyphon
12-06-2004, 04:29 AM
yeah it just keeps on flashing i dont think there a pattern because it flashes at a constant and steady pace

TRDmkII
12-07-2004, 01:35 AM
yeah that would mean that there is no codes. If its only on cold starts or after the car sits for awhile i would check the cold start time switch and the idle speed control.

hellsyphon
12-07-2004, 05:27 AM
heh aite thx for the help guys