 Bad Response, slow take off |
 Jul 2, 2006 - 12:02 PM
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Enthusiast  Joined Oct 3, '05 From Houston, Texas Currently Offline Reputation: 12 (100%)  |
I have a stocked out 94 st and my take off is really slow. This has just been happening recently. I can floor it and more noise than anything is happening. Does anybody know what might be wrong.
For example I can floor it in gravel and it doesn't even burn out, it's kinda scary entering a Hwy. and your barely moving. |
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Jul 12, 2006 - 3:19 PM
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 Enthusiast Joined Jul 12, '06 From Minnesota Currently Offline Reputation: 0 (0%) |
In case it's not related to your exhaust issue, I would check for vacuum or air leaks. Check the large hose from your air filter box to the intake. If there are any cracks at all, when the engine moves the cracks will open and it will suck in more air and lean out the mixture. Also check for vacuum leaks, esp. around the PCV valve and in any cracked rubber engine hoses. One way you can check for leaks is by using a length of 3/4" rubber tubing as a stethoscope. Failing that, I would check for intake gasket leaks. The trick here is to spray carb cleaner at the intake gasket and listen for a stumble.
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Jul 12, 2006 - 3:21 PM
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Enthusiast Joined Mar 11, '06 From Way South Chicago Currently Offline Reputation: 0 (0%) |
QUOTE(sh0x @ Jul 12, 2006 - 3:19 PM) [snapback]455213[/snapback] In case it's not related to your exhaust issue, I would check for vacuum or air leaks. Check the large hose from your air filter box to the intake. If there are any cracks at all, when the engine moves the cracks will open and it will suck in more air and lean out the mixture. Also check for vacuum leaks, esp. around the PCV valve and in any cracked rubber engine hoses. One way you can check for leaks is by using a length of 3/4" rubber tubing as a stethoscope. Failing that, I would check for intake gasket leaks. The trick here is to spray carb cleaner at the intake gasket and listen for a stumble. ST engine (7afe) is speed density (map) based, you can run an open throttle body if you want to, all the air measuring goes on in the manifold. airflow is calculated by MAP reading, enging rpm, and engine load, i may have left a few factors out. -------------------- |
Posts in this topic
94st_santos Bad Response Jul 2, 2006 - 12:02 PM
b1gr3d milege? Jul 2, 2006 - 12:05 PM ZacMan1987 It's an auto? Torque converter maybe? Jul 2, 2006 - 12:16 PM 94st_santos QUOTEmilege?
just hit 200,000
QUOTEIt's an au... Jul 2, 2006 - 12:34 PM Griff before i bought mine, it was slow like this, what ... Jul 2, 2006 - 12:40 PM celicaST maybe your auto tranny needs to be rebuilt, the cl... Jul 2, 2006 - 2:57 PM 94st_santos QUOTEmaybe your auto tranny needs to be rebuilt, t... Jul 2, 2006 - 3:33 PM Bitter is your timing advancing and your knock sensor wor... Jul 2, 2006 - 4:14 PM DomGT Exhaust leaks result in a loss of torque (low end ... Jul 2, 2006 - 5:25 PM
Bitter QUOTE(DomGT @ Jul 2, 2006 - 5:25 PM)... Jul 2, 2006 - 5:46 PM DomGT QUOTE(Bitter @ Jul 2, 2006 - 6:46 PM... Jul 2, 2006 - 6:15 PM 94st_santos QUOTEis your timing advancing and your knock senso... Jul 2, 2006 - 6:41 PM LewFX try seafoam in the throttle, gas tank, etc...start... Jul 2, 2006 - 7:34 PM Bitter set the timing to base, which is 10 degress below ... Jul 2, 2006 - 7:36 PM 94st_santos QUOTEtry seafoam in the throttle, gas tank, etc...... Jul 2, 2006 - 7:37 PM LewFX most auto stores carry it, its in a silver can cos... Jul 2, 2006 - 7:42 PM 94st_santos QUOTEset the timing to base, which is 10 degress b... Jul 2, 2006 - 7:52 PM Bitter QUOTE(94st_santos @ Jul 2, 2006 - 7... Jul 2, 2006 - 8:02 PM LewFX try the seafoam and tell us how it feels after Jul 2, 2006 - 7:55 PM 94st_santos Thanks guys I'll try and get some seafoam asap... Jul 2, 2006 - 8:05 PM laff09 QUOTE(94st_santos @ Jul 2, 2006 - 8... Jul 31, 2006 - 6:47 PM Bitter sparkplugs, sorry. if the plugs are several range... Jul 2, 2006 - 8:10 PM 94st_santos Yeah the first time changed my plugs, it was kind ... Jul 2, 2006 - 8:19 PM Mike95ST mine's been doin somethin similiar i think, i ... Jul 2, 2006 - 10:34 PM LewFX uhh i thought he has an auto, no clutch needed Jul 2, 2006 - 11:33 PM Mike95ST he does, but i got a manual, and im not sure whats... Jul 3, 2006 - 12:56 AM axelrduvirage QUOTE(Mike95ST @ Jul 3, 2006 - 2:56 ... Jul 3, 2006 - 1:05 AM 94st_santos I need to find some batteries for digi cam to post... Jul 3, 2006 - 5:44 PM LewFX post a video of your engine bay as someone trys to... Jul 3, 2006 - 6:03 PM 94st_santos Here some pics of the spark plugs the first time I... Jul 3, 2006 - 6:24 PM burneeed sounds like a trans problem... Does it slip at all... Jul 3, 2006 - 6:26 PM 94st_santos QUOTEsounds like a trans problem... Does it slip a... Jul 3, 2006 - 6:36 PM Bitter they look normal, other than being well worn.
how... Jul 3, 2006 - 6:46 PM 94st_santos QUOTEthey look normal, other than being well worn.... Jul 3, 2006 - 8:31 PM Bitter wow, did you drive 80k miles in those 3 months?... Jul 3, 2006 - 8:33 PM 94st_santos I don't think, I've had the car since Sept... Jul 3, 2006 - 10:26 PM southwest2118 hey you may have a restricted exhaust. unbolt it a... Jul 9, 2006 - 12:45 AM 94st_santos QUOTEhey you may have a restricted exhaust. unbolt... Jul 9, 2006 - 11:18 PM Culpable04 I'm getting the same code 71 and I replaced th... Jul 10, 2006 - 8:03 PM Culpable04 What happen is there is no leak on the hoses, I ch... Jul 12, 2006 - 5:47 PM 94st_santos I got my header today, I'm gonna pick up the g... Jul 12, 2006 - 9:58 PM Bitter QUOTE(94st_santos @ Jul 12, 2006 - 9... Jul 13, 2006 - 6:57 AM LewFX what header is that Jul 13, 2006 - 12:39 AM Batman722 QUOTE(LewFX @ Jul 13, 2006 - 1:39 AM... Jul 13, 2006 - 12:52 AM 94st_santos My header is for the corolla, and I got it from NO... Jul 13, 2006 - 9:44 PM southwest2118 The best way to find a vacuum leak it to spray all... Jul 16, 2006 - 11:36 AM 94st_santos QUOTEso how did it turn up?
Well you can definite... Jul 19, 2006 - 10:18 PM Bitter LOL cleaning the O2 sensors with gas is just so he... Jul 19, 2006 - 11:19 PM LewFX gas can be used as a cleaner Jul 19, 2006 - 11:33 PM Bitter QUOTE(LewFX @ Jul 19, 2006 - 11:33 P... Jul 20, 2006 - 12:04 AM rev_limit hey dude did you fixedyour car fixed yett ...if n... Jul 22, 2006 - 1:47 AM Culpable04 any update ?
I would like to know cause I have th... Jul 25, 2006 - 2:53 PM 94st_santos QUOTEhey dude did you fixedyour car fixed yett ...... Jul 25, 2006 - 10:31 PM Culpable04 did you replace your O2 sensors ? Jul 25, 2006 - 10:43 PM DomGT What is your MPG? Jul 26, 2006 - 9:36 AM Steevo How hard was it to get the two discolored plugs ou... Jul 26, 2006 - 10:08 AM Bitter that coloration is NOT caused by exhaust gasses. ... Jul 26, 2006 - 11:03 AM Steevo QUOTE(Bitter @ Jul 26, 2006 - 11:03 ... Jul 26, 2006 - 11:28 AM Bitter yes, its current tracking. the other 2 may not ha... Jul 26, 2006 - 11:54 AM 94st_santos Thanks guys this is alot of good info.
QUOTEdid ... Jul 26, 2006 - 10:02 PM DomGT Cmon bud at this point in time you should figure o... Jul 27, 2006 - 5:06 AM 94st_santos QUOTESpark plugs gapped right? Never trust them to... Jul 31, 2006 - 7:58 PM 94st_santos Here are the pics. I don't think I did all thi... Jul 31, 2006 - 9:27 PM |
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