Why? Why? Why? - Page 2

randomxzero · 09-29-2009, 03:02 AM

okay so car stays on when cold but as soon as temp starts getting to normal operating temp. it starts to die out.. any ideas?

randomxzero · 09-29-2009, 12:58 PM

bump...

dirocyn · 09-30-2009, 10:29 AM

You've gotten a lot of advice, let us know what you've tried and whether any of these things made a difference. I don't know yet if we can rule out AFM problems or plugged exhaust, or what you've found in your hunt for vacuum leaks. Also, test your O2 sensor, if it's giving a faulty reading it'll screw up your fuel mix as soon as the engine reaches operating temp. For test procedures, check out Oxygen Sensor Information

85SuperGZE · 10-06-2009, 02:47 PM

Can also test for vac leaks if you use wd-40, it will get the engine greasy, but a lot safer than holding a unlit brazing torch(no offense Jackstand).....also, check to make sure you dont have a crack in the tubing that connects the afm to the throttle body......But I would go with the vac leak.

toyotaspeed90 · 10-06-2009, 03:20 PM

^^ better than wd40... just use brake cleaner... it's flammable, so you will hear the idle jump up or down if there's a vacuum leak and brake cleaner is getting in. Plus it might clean some stuff off for ya while it's at it.

randomxzero · 10-06-2009, 03:25 PM

sorry double post :/

randomxzero · 10-06-2009, 03:35 PM

Quote:

Originally Posted by randomxzero

It cannot be a vacuum leak for this symptom happened right after i overheated...

all vacuums lines were replaced and tb got a new gasket as well as intake manifold....

im going to actually check resistance to ignition coil to see if its not getting too much power and overheating..then from there test out a AFM im pretty sure i have moved into an electrical problem since i have replaced..
AFM
Fuel Pump
Dizzy
Ignition
TPS
spark plug wires
spark plugs
battery
vacuum lines
throttle body
fuel filter
i forgot what else has been replaced..

10-06-2009, 03:25 PM	#26 (permalink)
randomxzero Downshift to Reverse! Join Date: Sep 2008 Location: 562 Posts: 1,032 Thanks: 10 Thanked 5 Times in 5 Posts iTrader Rating: (0/0% )	sorry double post :/ Last edited by randomxzero; 10-06-2009 at 03:40 PM.

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09-29-2009, 03:02 AM	#21 (permalink)
randomxzero Downshift to Reverse! Join Date: Sep 2008 Location: 562 Posts: 1,032 Thanks: 10 Thanked 5 Times in 5 Posts iTrader Rating: (0/0% )	okay so car stays on when cold but as soon as temp starts getting to normal operating temp. it starts to die out.. any ideas?

09-29-2009, 12:58 PM	#22 (permalink)
randomxzero Downshift to Reverse! Join Date: Sep 2008 Location: 562 Posts: 1,032 Thanks: 10 Thanked 5 Times in 5 Posts iTrader Rating: (0/0% )	bump...

09-30-2009, 10:29 AM	#23 (permalink)
dirocyn Cage Fighter Join Date: Mar 2009 Posts: 133 Thanks: 6 Thanked 12 Times in 12 Posts iTrader Rating: (0/0% )	You've gotten a lot of advice, let us know what you've tried and whether any of these things made a difference. I don't know yet if we can rule out AFM problems or plugged exhaust, or what you've found in your hunt for vacuum leaks. Also, test your O2 sensor, if it's giving a faulty reading it'll screw up your fuel mix as soon as the engine reaches operating temp. For test procedures, check out Oxygen Sensor Information

10-06-2009, 02:47 PM	#24 (permalink)
85SuperGZE Multi MK1 Owner Join Date: Mar 2009 Location: Dallas, Tx Posts: 87 Thanks: 4 Thanked 5 Times in 5 Posts iTrader Rating: (0/0% )	Can also test for vac leaks if you use wd-40, it will get the engine greasy, but a lot safer than holding a unlit brazing torch(no offense Jackstand).....also, check to make sure you dont have a crack in the tubing that connects the afm to the throttle body......But I would go with the vac leak.

10-06-2009, 03:20 PM	#25 (permalink)
toyotaspeed90 No Skills Join Date: Jun 2006 Location: Bellingham, WA Posts: 422 Thanks: 0 Thanked 32 Times in 32 Posts My Google Map iTrader Rating: (0/0% )	^^ better than wd40... just use brake cleaner... it's flammable, so you will hear the idle jump up or down if there's a vacuum leak and brake cleaner is getting in. Plus it might clean some stuff off for ya while it's at it.