99 3.4 hard to start hot
#24
Originally Posted by SC4Runner
I think its the gray-green plastic box right underneath the TB. Looks like it would be fiull of electricals

The IAC is now in the far left upper part of the photo (Christian has it in his hand in the pic).
Here are another shot with a good view too (actually looks semi-green in that pic):
Last edited by MTL_4runner; Feb 6, 2006 at 12:04 PM.
#25
So far I have replaced the fuel filter, OX sensor, air filter, spark plugs, and wires, cleaned the MAF and the TB and put a can of sea foam through it. Problem is still there :pat: Tonight I am going to pull the TB and clean the IAC and see if that does it. Thanks for all the response to this
I'll let yall know if it works
I'll let yall know if it works
#26
2000t4r, thanks for the info, cleaned the IAC and the problem seems to have gone away
It didnt appear to be that dirty but after cleaning it the truck starts up like it should. Thanks again.
For all the others that are having this same prob. I would first clean the IAC and see if that fixes your problem, might save you some $$$.
Scott
It didnt appear to be that dirty but after cleaning it the truck starts up like it should. Thanks again. For all the others that are having this same prob. I would first clean the IAC and see if that fixes your problem, might save you some $$$.
Scott
#29
To get to the IAC you have to take the TB off, then it unscrews off the bottom. When I pulled mine off and it really didnt look that bad but I sprayed it clean with carb cleaner, made sure it turned freely and put it all back together. I havent had any other problems the truck always starts up fine now, but I decided to replace it and the associated gaskets anyway. I'll post the part numbers tonight, it cost around $175 from 1sttoyotaparts excelent people to deal with.
#30
This is great info! I am also having this issue on my 2002 toyota truck with a 170k on her. Im about ready to trade her in but I think ill have to try and clean these items b4 I go that route. Already cleaned the MAF and no luck!!
Just wondering if anyone knows any tricks to getting their truck started when this happens? Mine will start if I give it gas but then as soon as I let off it it shuts down. I guess its gotta go through its cycles of about 10 or so cranks & then will start up and run fine! I dunno!! It always happens to me when I am comming home from work and I stop to get gas! I thought I was gonna be stranded several times now with this issue! Runs great when it is running though! Thats why I dont wanna get rid of her just yet! Latley I just have been leaving the truck run while I go in the store or get gas. (Its a work truck and its not a real big deal cause I really only drive it 35mi. to work and I have the Runner to drive when I am off) Starts great b4 going to work and also when I am leaving work. Seems like it just happens when the truck is warmed up and I shut it off just for a few minutes.
It has been doing this for about 4 years now! I actually thought I found a trick to starting it when this happens and it has worked for the last 3 or 4 years for me now. When I would try and start it and it would die like usual & I would just let it sit for a bit! Long enough for me to put my glasses on and put my seatbelt on and then I would crank her again and BOOM she always seemd to fire right up!! But latley it has been really bad and my lil trick has not been working as much so I guess im gonna have to look into this issue a bit more so I don't get possibly stranded!
Definatley gonna look into getting the IAC cleaned and the throttle body cleaned! I am not real gutzy/knowedgable nor have the help when it comes to messing with major parts of the motor on these vehicles! Atleast I think those are major parts anyways! So I might look into having someone or Toyota do this for me.
Hopfully more people will chime in on this subject and give us all some more hints on this issue..
" I dont wanna buy a new truck! I wanna buy a new SS Camaro "
Just wondering if anyone knows any tricks to getting their truck started when this happens? Mine will start if I give it gas but then as soon as I let off it it shuts down. I guess its gotta go through its cycles of about 10 or so cranks & then will start up and run fine! I dunno!! It always happens to me when I am comming home from work and I stop to get gas! I thought I was gonna be stranded several times now with this issue! Runs great when it is running though! Thats why I dont wanna get rid of her just yet! Latley I just have been leaving the truck run while I go in the store or get gas. (Its a work truck and its not a real big deal cause I really only drive it 35mi. to work and I have the Runner to drive when I am off) Starts great b4 going to work and also when I am leaving work. Seems like it just happens when the truck is warmed up and I shut it off just for a few minutes.
It has been doing this for about 4 years now! I actually thought I found a trick to starting it when this happens and it has worked for the last 3 or 4 years for me now. When I would try and start it and it would die like usual & I would just let it sit for a bit! Long enough for me to put my glasses on and put my seatbelt on and then I would crank her again and BOOM she always seemd to fire right up!! But latley it has been really bad and my lil trick has not been working as much so I guess im gonna have to look into this issue a bit more so I don't get possibly stranded!
Definatley gonna look into getting the IAC cleaned and the throttle body cleaned! I am not real gutzy/knowedgable nor have the help when it comes to messing with major parts of the motor on these vehicles! Atleast I think those are major parts anyways! So I might look into having someone or Toyota do this for me.
Hopfully more people will chime in on this subject and give us all some more hints on this issue..
" I dont wanna buy a new truck! I wanna buy a new SS Camaro "
#31
This is great info! I am also having this issue on my 2002 toyota truck with a 170k on her. Im about ready to trade her in but I think ill have to try and clean these items b4 I go that route. Already cleaned the MAF and no luck!!
Just wondering if anyone knows any tricks to getting their truck started when this happens? Mine will start if I give it gas but then as soon as I let off it it shuts down. I guess its gotta go through its cycles of about 10 or so cranks & then will start up and run fine! I dunno!! It always happens to me when I am comming home from work and I stop to get gas! I thought I was gonna be stranded several times now with this issue! Runs great when it is running though! Thats why I dont wanna get rid of her just yet! Latley I just have been leaving the truck run while I go in the store or get gas. (Its a work truck and its not a real big deal cause I really only drive it 35mi. to work and I have the Runner to drive when I am off) Starts great b4 going to work and also when I am leaving work. Seems like it just happens when the truck is warmed up and I shut it off just for a few minutes.
It has been doing this for about 4 years now! I actually thought I found a trick to starting it when this happens and it has worked for the last 3 or 4 years for me now. When I would try and start it and it would die like usual & I would just let it sit for a bit! Long enough for me to put my glasses on and put my seatbelt on and then I would crank her again and BOOM she always seemd to fire right up!! But latley it has been really bad and my lil trick has not been working as much so I guess im gonna have to look into this issue a bit more so I don't get possibly stranded!
Definatley gonna look into getting the IAC cleaned and the throttle body cleaned! I am not real gutzy/knowedgable nor have the help when it comes to messing with major parts of the motor on these vehicles! Atleast I think those are major parts anyways! So I might look into having someone or Toyota do this for me.
Hopfully more people will chime in on this subject and give us all some more hints on this issue..
" I dont wanna buy a new truck! I wanna buy a new SS Camaro "
Just wondering if anyone knows any tricks to getting their truck started when this happens? Mine will start if I give it gas but then as soon as I let off it it shuts down. I guess its gotta go through its cycles of about 10 or so cranks & then will start up and run fine! I dunno!! It always happens to me when I am comming home from work and I stop to get gas! I thought I was gonna be stranded several times now with this issue! Runs great when it is running though! Thats why I dont wanna get rid of her just yet! Latley I just have been leaving the truck run while I go in the store or get gas. (Its a work truck and its not a real big deal cause I really only drive it 35mi. to work and I have the Runner to drive when I am off) Starts great b4 going to work and also when I am leaving work. Seems like it just happens when the truck is warmed up and I shut it off just for a few minutes.
It has been doing this for about 4 years now! I actually thought I found a trick to starting it when this happens and it has worked for the last 3 or 4 years for me now. When I would try and start it and it would die like usual & I would just let it sit for a bit! Long enough for me to put my glasses on and put my seatbelt on and then I would crank her again and BOOM she always seemd to fire right up!! But latley it has been really bad and my lil trick has not been working as much so I guess im gonna have to look into this issue a bit more so I don't get possibly stranded!
Definatley gonna look into getting the IAC cleaned and the throttle body cleaned! I am not real gutzy/knowedgable nor have the help when it comes to messing with major parts of the motor on these vehicles! Atleast I think those are major parts anyways! So I might look into having someone or Toyota do this for me.
Hopfully more people will chime in on this subject and give us all some more hints on this issue..
" I dont wanna buy a new truck! I wanna buy a new SS Camaro "

Nineteen exclamation points.... Holy cow, man.
Andreas
#32
i had the same problem with my 98 tacoma with the 2.7L 3rz engine would start great when cold or if it sat for more then 2 hours but in between that if the engine was a little warm or hot it would just turn and turn and turn but never catch.
I tried everyone i read on here and well after a few months of trying something new every weekend when i didnt work i finally unhooked my coolant temperature sensor (the one behind teh engine block above the transmission bell housing) and it fired right up after i cranked it for 15sec intervals and priming the pump. bought the sensor for $15 and now i got no problems it starts every time.
edit: Never mind worked half decent for 1 week and now its back to not starting, i put a very quick spray of starting fluid and it fires right up.
Anyone find the problem to this i tried MAF, coolant temperature sensor, new plugs, wires and fuel filter.
I tried everyone i read on here and well after a few months of trying something new every weekend when i didnt work i finally unhooked my coolant temperature sensor (the one behind teh engine block above the transmission bell housing) and it fired right up after i cranked it for 15sec intervals and priming the pump. bought the sensor for $15 and now i got no problems it starts every time.
edit: Never mind worked half decent for 1 week and now its back to not starting, i put a very quick spray of starting fluid and it fires right up.
Anyone find the problem to this i tried MAF, coolant temperature sensor, new plugs, wires and fuel filter.
Last edited by vikkz; Mar 24, 2012 at 08:32 PM.
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