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Ihaveanewtempo
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Post subject: Ford Tempo Stalling Issue
 Posted: Mar 24, 2012 - 05:10 AM
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Joined: Feb 03, 2012
Posts: 30
Status: Offline
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| My 1991 Ford Tempo 2.3L seems to have a stalling issue. The car stalls out sometimes when accelerating from a stop on an incline. The only way I can get the car to not stall out is if I give the car an unnecessary amount of gas, in which obviously the rpms shoot up and it is ok. The car never stalls out on idle, but when coaxing it from a stop, it feels like it wants to stall. I have replaced the spark plugs, but the problem still remains. I hear the 1991 models do not have a mass air sensor, so I am wondering what you think the problem could be. |
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Ihaveanewtempo
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Post subject:
Posted: Mar 24, 2012 - 11:14 PM
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Joined: Feb 03, 2012
Posts: 30
Status: Offline
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| i changed air filter and fuel filter just now, seems to be running better. Anyone else have anything to add if stalling problem comes back?? |
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Ihaveanewtempo
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Post subject:
Posted: Mar 26, 2012 - 09:09 PM
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Joined: Feb 03, 2012
Posts: 30
Status: Offline
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| alright...it stalled again..i have figure out if i let the car roll a bit before i give it a slight bit of a gas, it doesn't stall out.. but from a complete stop with a very small amount of gas, the car feels like it wants to stall..and sometimes does.. i noticed there is a crack in one of the vaccum hoses leading out of the intake manifold..do you think that would be the cause?.. anyone? |
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jglen490
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Post subject:
Posted: Mar 26, 2012 - 10:07 PM
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Posting Freak
Joined: Jul 13, 2007
Posts: 773
Location: Montgomery AL
Status: Offline
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Vacuum failures can cause all kind of issues. Yes, go through your vacuum system and replace cracked/worn out lines.
Also, it would not hurt to pull codes and to make sure the fuel pressure is up to specs. |
_________________
I feel more like I do now than I did when I got here.
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'92 Plymouth Grand Voyager, 3.3L - "Old Guy"
'94 Tempo GL 4-door, 2.3L, autotragic - "Bonz"
'97 Ranger 3.0L - "Abe"
'05 Dodge caravan, 3.3L - "George"
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Ihaveanewtempo
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Post subject:
Posted: Mar 26, 2012 - 11:02 PM
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Joined: Feb 03, 2012
Posts: 30
Status: Offline
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| anyone know where i can get the specification for the vacuum lines on the ford tempo, i tried bringing them into a pepboys and autozone and they don't have the correct size. Also, theres no markings on the lines. |
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Ihaveanewtempo
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Post subject:
Posted: Mar 28, 2012 - 09:12 PM
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Joined: Feb 03, 2012
Posts: 30
Status: Offline
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| replaced all the vacuum hoses... same problem. I can make the car stall if i put it into drive and very lightly pump the gas to where it barely moves..on an incline.. if i keep pumping repeatedly with the same soft touch, the car will stall. It will not stall if normal pressure is apply to the gas..In my opinion the car doesn't get enough fuel to keep the engine running. This is making me think it is low fuel pressure, or something is off. Also to note when i try to make the car stall, after i get out of the car, i smell fuel as if the car is running rich. when driving normally, it doesn't smell of fuel at all. But the fact that i CAN make the car stall annoys me..there is no check engine however, so not sure how i can pull fuel pressure through the computer.. |
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jglen490
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Post subject:
Posted: Mar 28, 2012 - 09:43 PM
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Posting Freak
Joined: Jul 13, 2007
Posts: 773
Location: Montgomery AL
Status: Offline
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| You have to actually measure the pressure via the Schrader valve (looks like a tire valve) on the actual fuel rail. Most auto parts stores have a fuel pressure measurement tool available to use or rent. |
_________________
I feel more like I do now than I did when I got here.
=====================================
'92 Plymouth Grand Voyager, 3.3L - "Old Guy"
'94 Tempo GL 4-door, 2.3L, autotragic - "Bonz"
'97 Ranger 3.0L - "Abe"
'05 Dodge caravan, 3.3L - "George"
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ctubutis
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Post subject:
Posted: Mar 29, 2012 - 05:21 AM
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Joined: Oct 07, 2011
Posts: 114
Location: Denver metro area, CO
Status: Offline
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Ihaveanewtempo
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Post subject:
Posted: Apr 02, 2012 - 10:39 PM
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Joined: Feb 03, 2012
Posts: 30
Status: Offline
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| thanks for the reply, but i think i may have figure out the problem..when the car has a 1/4 tank or less..thats when the stalling problems occur, with a full tank it doesn't happen.. so i guess the problem is just a weak fuel pump..agree? |
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ctubutis
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Post subject:
Posted: Apr 03, 2012 - 02:02 AM
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Member
Joined: Oct 07, 2011
Posts: 114
Location: Denver metro area, CO
Status: Offline
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Electric fuel pumps should be on or off - either they work or they don't.
I would be more suspicious of a pickup tube in the tank, or the in-tank filter, or something in that area. |
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Ihaveanewtempo
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Post subject:
Posted: Apr 21, 2012 - 01:22 PM
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Member
Joined: Feb 03, 2012
Posts: 30
Status: Offline
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| Well, scratch that idea of having a full tank to rectify the problem. It stalled again with a full tank so the amount of fuel did not have an impact on the stalling. This has become a side project of mine as it is really annoying that no one seems to be able to figure it out. The weird thing is the car idles FINE and the car will drive at any speed FINE without chance of stalling. The ONLY time the car will stall is if i BARELY give it gas either from a completely stop or on an incline..It is almost as if the engine isn't getting a correct fuel/air ratio and chokes itself out. I don't want to have to keep flooring it at a stop light to be sure it doesn't stall, and i figure it could be dangerous if i am inching my way out on a highway and suddenly the car feels like stalling out when im half way out there. I have changed the MAP sensor (since the 1991 has no mass air sensor), I have changed the TPS sensor, changed the spark plugs, air filter, and fuel filter. As the previous poster mentioned the fuel pump is probably not the issue as i would have problems at other speeds as well if it was a weak fuel pump..but i don't.. I brought it to a mechanic to check the fuel pressure but the **** guy said he didn't want to do it because he couldn't find the valve to check it (i assume this car didn't have the valve and you would have to do some complicated way of checking the fuel pressure, so the mechanic didn't want to do it) I haven't changed the spark plug wires yet, but my friend said that wouldn't really cause the problem i'm having and if they were bad it would be more of misfiring. When the car stalls out, it suddenly starts smelling of fuel, which I assume is gas not being burned being properly due to whatever is causing the problem. I have a fuel pressure regulator i'm about to install, but someone said it would be a waste of money and i should just return it because if the fuel pressure regulator was bad, the idle would be probably rough (which it isn't), and i'd be getting black smoke out the exhaust (which i'm not)... It is hilarious how even mechanics don't even want to be bothered with this. Silly me thought the engine was throwing a code when the engine stalled out, but then i realized that the check engine light is on just because when the car stalls out, the dash just lights up as you would if you have the key set in the ignition, so no code is actually being thrown at me. ahhhh ridiculous. the car only has 76k miles annoying!! |
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shelbyman
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Post subject:
Posted: Apr 22, 2012 - 05:02 AM
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Member
Joined: Feb 25, 2007
Posts: 64
Location: Mc Henry Kentucky
Status: Offline
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| If your automaic tranny fluid is a little low it will cause this. First time I saw it was on my bro's Dakota. Wanted to die coming off every stoplight but when it got moving it ran great. He was 3 quarts low on tranny fluid due to some loose bolts on the pan. If that's not it, might try a new throttle position sensor. |
_________________
94 2dr Tempo 2.3 5spd Green (Currrent Daily Driver)
89 2d Topaz 2.3 Auto Red (Former Daily Driver)
93 2dr Tempo 2.3 5spd Blue (Dad's Former Daily Driver,My First Stick)
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ctubutis
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Post subject:
Posted: Apr 22, 2012 - 03:14 PM
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Member
Joined: Oct 07, 2011
Posts: 114
Location: Denver metro area, CO
Status: Offline
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Do some more diagnosing and less theorizing. The fact tht it smells of fuel should be a huge, quickly-waving hand at you.
I don't remember when Ford started with the Schrader valve but my 1986 with TBI doesn't have one. If the mechanic you went to is too lazy to do some actual diagnosis, go to a better mechanic.
First off, ensure the computer gives you only Code 11 for all its tests. You have a computer-controlled engine, let the computer help you figure it out.
You might be surprised how many times people come to these kinds of forums claiming the computer says everything is fine when, in reality, they're intimidated by the thing and won't dare touch it or learn how to talk to it, or they'll say "Oh, well, yeah, I was ignoring those codes because I disabled so & so emissions devices" which the guy had never mentioned and comes about only after several days/weeks of several people trying to figure things out.
There are things the computer won't know about, though, so diagnostic work on your part is necessary. Don't just throw parts at it.
For fuel delivery, check output pressure and flow rate; methods should be in any decent $20 repair manual, or find a mechanic who will help you.
You have multiport injection, ensure the injectors are firing correctly and operating optimally. Also in the manual.
You can also verify the ignition is delivering the correct spark at the right time (also in the manual). But the fact that you say it smells of gasoline afterwards strongly suggests the issue is fuel-delivery related.
I am going to assume the engine has decent compression and there are no issues with burnt valves or worn cam lobes or anything.
I would begin there.
BTW your posts would be easier to read (and more people might contribute) if you broke up your text into paragraphs and used white space between them. A big wall of text is difficult to read and many people will just skip on by to the next. |
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