Question about 1996 Toyota Tacoma

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1996 Toyota Tacoma wont start when the engine is hot and sits a few minutes

1996 tacoma pickup 4 cylinder, 5 speed.
when the engine gets warm and you stop somewhere for a few minutes the engine will not crank, just turns over and over.Starts great when cold and runs great allways.Toyota mechanic checked fuel pressure and said it was fine. He is thinking maybe crank sensor, or module in the distributor
Anybody got any ideas

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  • Anonymous Aug 26, 2008

    We're having the same exact problem too. Our mechanic replaced the fuel filter and oxygen sensor which didn't help at all.

  • ajc95821 Aug 30, 2008

    Having the same problem here too. It seems to have started after I had Jiffy lube replace the fuel filter... Recently took it in to the mechanic and they tested the fuel pressure and said it was fine and couldn't determine why it was not starting when hot. It cranks and cranks but doesn't want to turn over... 




    One thing I found while searching the web was a comment about not soaking the fuel filter with gast before installing, and that the initial 'blast' of fuel pressure could break apart the paper filter causing it to travel in the fuel lines ... this doesn't make a whole lot of sense to me because wouldn't that be a problem ALWAYS and not just when it's HOT?


    This is my only vehicle and I need this solved... HELP!

  • Anonymous Sep 12, 2008

    I also have the exact same problem with my 1996 Toyota Tacoma. It won't start when engine is hot and the outside temperature is over 85. Wondering if anyone came up with a solution. The mechanic I took it to couldn't figure it out!

  • robspencer Oct 10, 2008

    I tried removing the gas cap and it worked the 1st time. But several other times it didn't work. I have been removing the cap and letting the pressure off and the re installing it. I have been meaning to buy a new cap and see if that fixes it but I keep forgetting to stop and get one.

    I sometimes wonder if it isn't somehow vapor locking, maybe because of blended gas with ethanol ??

    I dont remember ever seeing a label saying the gas I was buying had any ethanol.

  • mcostan Nov 17, 2008

    1995 Tacoma 1.7L - same thing - cranks but won't start hot, will push start easily, smells "flooded", and starts right up when cooled off for 30 minutes or so.

  • Anonymous Apr 12, 2009

    OK guys - It's spring and the weather is heating up... My truck has already done this a couple of times this year! ANYONE have any ideas?? MCOSTAN - did you replace your fuel injectors? did it work?? This is my only vehicle and it makes it very difficult to get around. THANKS !

  • mtsus Apr 29, 2009

    95 Tacoma,176,000 I have the same problem, just started last summer, happens when I run the AC, the only cure I have found so far is to wait, but there has to be something else.... Has anyone "cured" it yet? Help, trying to avoid the price of a mechanic scratching his head, and the embarrassment of it not starting for 10 at the gas station.....

  • ajc95821 May 11, 2010

    Re: Guest - Take the Gas Cap OFF? Are you serious??? Since nobody can seem to figure this out, I actually tried it when my truck wouldn't start again... it didn't work. I knew it wouldn't and felt stupid for even entertaining the idea... but I'm getting desperate and was stuck in the parking lot at a 99cent store...
    Thanks for trying. joke's on me.
    Help me APACHEPARTS - you're my only hope! Please post more info when you have it- Thanks!


  • miguel Sep 16, 2013

    hey peeps, found out that when i took my tacoma in for same reason.mechanic said he had a truck just like mine. he had same problem ,he found out that the toyota distributer when get hot it kinda shuts down not sparking,gets too hot. when the weather gets passed 95 degree it always had this problem.

  • Anonymous Mar 29, 2014

    Starts good goes for a while when it warms up after a while it stops and wont start again have replaced complete fuel line could it be fuel pump? or sensor gonein it

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I Hope You All Appreciate This FAST and EASY Inexpensive Repair That Even The Toyota Dealers Dont Seem To Know How To Fix !!! The Problem Is The Air filter temp sensor. Look On The Left Side Of the Air Filter Housing and Disconnect The Plug Thats Attached To The Spark Plug Like Plastic Sensor Mounted on The Side Of the Air Filter Housing, Now Go Start Your Truck !!! Your Truck Will Start And RUN Fine Now ! Replace The Sensor Approx $59 at Autozone... This Should Fix 90% Of Your Problems If your In the other 10% and it does not Fix it , Email Me and Ill See If I Can Help ! People Have Spent Hundreds and into The Thousand Dollar Area Trying to Resolve This Intermittant Problem At Inept Shops with Illiterate Mechanics ! If Your Happy With This Fix, BE Generouse ! I Do Accept Donations at Paypal Send to donsgirl89@yahoo.com Thank You JOE Mechaniac

Posted on May 18, 2009

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It seems that this problem is happening to quite a few people.

This problem has been going on with my 98 Tacoma for almost 2 years now. It doesn't matter if it is summer, winter, spring or fall, and after replacing the MAF, Coolant Temp Sensor, and Throttle Positioning Sensor it is still happening. I used to sit and wait the 30 - 45 min to let it cool and it would start right up, but now I have started carrying a gallon jug of water in the bed of the truck just in case it won't start again.

Mine must be vapor locking bc by pouring the water over the fuel rail it causes something to click on the engine and then it starts right up. It has worked every time I have done this trick. I guess that the fuel condenses back to a liquid and fires right up. Hopefully this helps and if anyone figures out how ti fix it please let e know.

Posted on Jun 17, 2011

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Joemechanic got it right, just had a problem starting it and disconnected the said part, fired up without a problem! do what he says!

Posted on Jul 22, 2009

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Same problem with my 1995 Tacoma. Took it to a dealer and they come up with the coolant temp sensor was bad. It was telling the computer something was wrong with the coolant temp (even though the gauge was mid line). The computer starts to idle the engine high and wouldn't let it start untin the coolant temp cooled off. They replaced the sensor this afternoon. I drove it about 60 miles or so then shut it off. It starts fine now. It'll take a few weeks to actually trust it but it seems like it works fine now.

Posted on Oct 02, 2010

  • hickeyda85 Oct 02, 2010

    Before I took it to the dealer, I changed the fuel filter, plugs, wires, rotor and dist. cap and battery. Nothing helped. I tried joethemechanic's solution of disconecting the air filter temp sensor and nothing. I also cleaned the MAF sensor without luck. Truck runs great with the tune up but I wish I'd have taken it to the dealer first. After a couple weeks, I'll post another comment to let you know how it's doing. Hope this helps the next victim of a bad coolant temp sensor.

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Here is a solution I found on another forum:

Replace the fuel injectors.

They claim that when its hot outside, the fuel injectors leak out the excess pressure in the fuel line. (fuel injector is essentially a little valve/nozzle) This extra fuel causes the engine to flood (too much gas, too little air) and you have to wait for it to dissipate before it will start.

I do not know why it seems to be linked to outside temperature - if the engine is at operating temperature it should be the same temperature on a hot or cold day. But lately, mine is doing it all the time.

I haven't tried replacing mine yet, but this is another possibility if you are still seeking a solution. I've read this will fix it...

Posted on Nov 23, 2008

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I'm the 10% that the new temperature sensor did not work. What did work was leaving the temperature sensor disconnected. Then a second superior solution that worked was to add a 100 ohm resister in series with the temperature sensor. This makes the electronics think the air temperature is slightly cooler than it is. Because the electronics checks the air temperature with the coolant temperature, I think what is really happening is increased resistance in the coolant sensor wiring. But for the past several months a 100 ohm resister solved the problem.

Posted on Aug 06, 2012

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If I pinch off the fuel return line it will start. It will also start if I squirt fuel in the intake. So, obviously the mixture is too lean. I know the fuel is boiling in the injector rail. I have checked the fuel pressure and volume hot and cold. They are fine. I have tried to insulate the fuel line and have even gone so far as to install a different fuel line to move the filter away from the engine. No help. I have replaced the air temp sensor and tested the water temp sensor. BTW, there are two water temp sensors. One for the gauge and one for the computer. No help from Toyota either. They say it is the fuel. And even though I agree they should be working on a fix. I guess their fix is for me to buy another truck. I have installed a fuel shutoff solenoid on the fuel return line that can be actuated for a moment from inside the cab.

Posted on Apr 10, 2012

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I have my key ingintion moves and i think it is bad because when i rotate right it starts up
i starting to have problems when it is cold out

Posted on Nov 23, 2008

I also tried the removing the gas cap. It actually worked the first time. Then a few times it didnt help. I removed it to let the pressure off then installed it again. I have been meaning to replace the gas cap and see if the helps, just seem to forget about it while its is starting ok.

Posted on Oct 10, 2008

The only thing that seems to help me at all is to take the gas cap off and then put it back on. most of the time it will start right back up.

Posted on Sep 12, 2008

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Thanks Joe, this was the answer I was looking for!!! Fixed my probem changing this simple air filter temp sensor for $55 bucks. Thank you!!!!!
"I Hope You All Appreciate This FAST and EASY Inexpensive Repair That Even The Toyota Dealers Dont Seem To Know How To Fix !!! The Problem Is The Air filter temp sensor. Look On The Left Side Of the Air Filter Housing and Disconnect The Plug Thats Attached To The Spark Plug Like Plastic Sensor Mounted on The Side Of the Air Filter Housing, Now Go Start Your Truck !!! Your Truck Will Start And RUN Fine Now ! Replace The Sensor Approx $59 at Autozone... This Should Fix 90% Of Your Problems If your In the other 10% and it does not Fix it , Email Me and Ill See If I Can Help ! People Have Spent Hundreds and into The Thousand Dollar Area Trying to Resolve This Intermittant Problem At Inept Shops with Illiterate Mechanics ! If Your Happy With This Fix, BE Generouse ! I Do Accept Donations at Paypal Send to donsgirl89@yahoo.com Thank You JOE Mechaniac"

Posted on Jul 20, 2010

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I also have this problem with my 95 Tacoma. I've been working at it and researching it for the last few months with no solution. I do have some back ground on engine work, and I have determined that the likely problem is:

Lack of spark
Too rich air/fuel mixture
(i've eliminated vapor lock - which was my first thought)

The next approach I am thinking of trying is to "jump" the power to the starter with ignition in the "on" position. This should work, as it push starts easily. If this is the case, then that means there must be some signal from the ignition that is incorrect when the engine is hot. If this is the case, then we just need to know the wiring of the ignition switch and start testing each connection by disconnecting them, and eventually by process of elimination we can point out the problem signal/sensor/processor.

Any thoughts?

Posted on Nov 17, 2008

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I RAN INTO A PROMBLEM MUCH LIKE THIS ONE ON A 98 S10 PU I OWNED. WHEN I DID A FUEL PRESSURE TEST IT WAS WITHIN SPECS BUT I DIDN'T DO A FUEL VOLUME TEST. WHEN YOU FIRST HIT THE KEY THE FUEL PUMP KICKS ON AND GAVE ME PROPER FUEL PRESSURE BUT WHEN I PULLED THE LINE AND HIT THE KEY IT BARELY SPIT OUT A 1/4 CUP OF GAS. I TRACED THE PROBLEM BACK TO BEING AN ELECTRICAL SHORT IN THE POWER SUPPLY TO THE PUMP.

OH AND BY THE WAY I AM FACING THE SAME EXACT PROBLEM ON OUR 96 TACOMA DELIVERY TRUCK. I'M GOING TO BE DOING THIS TEST HERE SHORTLY AND I WILL LET YOU GUYS KNOW WHAT I FIND OUT.

Posted on Oct 10, 2008

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Found this solution and it worked for me on my 1996 Toyota Tacoma and fixed the problem you described...!!! Here it is --------"I Hope You All Appreciate This FAST and EASY Inexpensive Repair That Even The Toyota Dealers Dont Seem To Know How To Fix !!! The Problem Is The Air filter temp sensor. Look On The Left Side Of the Air Filter Housing and Disconnect The Plug Thats Attached To The Spark Plug Like Plastic Sensor Mounted on The Side Of the Air Filter Housing, Now Go Start Your Truck !!! Your Truck Will Start And RUN Fine Now ! Replace The Sensor Approx $59 at Autozone... This Should Fix 90% Of Your Problems If your In the other 10% and it does not Fix it , Email Me and Ill See If I Can Help ! People Have Spent Hundreds and into The Thousand Dollar Area Trying to Resolve This Intermittant Problem At Inept Shops with Illiterate Mechanics ! If Your Happy With This Fix, BE Generouse ! I Do Accept Donations at Paypal Send to donsgirl89@yahoo.com Thank You JOE Mechaniac"
The answer (above) came from this link and was posted by joe the mechanic on this thread
http://www.fixya.com/cars/t890232-1996_toyota_tacoma_wont_start_when

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