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Posted by Red00GT (Member # 5653) on :
 
ok so got the GT running...NOW the problem is that when i come out of first gear it shakes quite a bit...then it feels like the car is bogging..then KICKS in around 3K..or higher...(basically kicks in back to normal power)..anyone know what could be causing this problem??? i have NO CLUE! John B...someone..HELP!!
 

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Posted by Spitfiremk24 (Member # 5698) on :
 
be more specific about what is shaking, and what happens when it "kicks in?"
 

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Posted by Red00GT (Member # 5653) on :
 
shaking feels like the motor/tranny...

kicks in..meaning....bogs below rpms...now when it gets higher power goes back to normal
 

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Posted by losbadgts (Member # 4394) on :
 
check all the connections, and check the plugs and gaps.
 

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Posted by 92stangLX (Member # 3252) on :
 
What exactly did you do to the car before you had this problem?
 

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Posted by Red00GT (Member # 5653) on :
 

quote:

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Originally posted by 92stangLX:
What exactly did you do to the car before you had this problem?

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replaced my motor...
 

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Posted by 94gt (Member # 3060) on :
 
Do you have a CEL or SES light? For your o/r h do you have anything to kill the CEL for those o2's?

re-check every electrical connection... did you leave the battery disonnected to reset the comp?
 

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Posted by Red00GT (Member # 5653) on :
 
yep did all that...

car seems to sputter a bit..then wont have a lot of power..until it kicks in...then power is normal...

i dont know what the fvck is goin on...
 

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Posted by losbadgts (Member # 4394) on :
 
i had almost the same problem and it was one of mine plugs that the gap had close all the way, also check your injectors.
 

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Posted by two-gun kid (Member # 5891) on :
 
its vtec, slow at low rpms and it kicks in at higher rpm band, just like vtech
 

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Posted by putter (Member # 4253) on :
 
Dont feel bad mine does this too. I think its one of my plugs (too lazy to check it out) If I let off the pedal a tad it "kicks" in before the higher rpms.
 

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Posted by 88DroptopGT (Member # 2535) on :
 
Do you have IMRC's? Did you pull codes? Tune up for your new engine?


 

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Posted by BlacksheepMod50 (Member # 2378) on :
 
I am having this EXACT problem right now with my car. Thought it was the plugs - replaced them, and nothing. I even got my car tuned and still have a problem. Everyone i've talked to (my opinion included) suggest a dead O2 sensor. This does not always trip a check engine light. This effects your fuel trims and will create this exact effect. But yeah, mine does the exact same thing, bogs, sometimes will even backfire if I try to give it almost full throttle while bogging, then it hits 3K and takes off. When I got tuned by Apex last friday they said I had a dead 02 - Thats my call for whatever its worth.

Ryan

[ January 09, 2006, 05:23 PM: Message edited by: BlacksheepMod50 ]
 

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Posted by Red00GT (Member # 5653) on :
 

quote:

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Originally posted by BlacksheepMod50:
I am having this EXACT problem right now with my car. Thought it was the plugs - replaced them, and nothing. I even got my car tuned and still have a problem. Everyone i've talked to (my opinion included) suggest a dead O2 sensor. This does not always trip a check engine light. This effects your fuel trims and will create this exact effect. But yeah, mine does the exact same thing, bogs, sometimes will even backfire if I try to give it almost full throttle while bogging, then it hits 3K and takes off. When I got tuned by Apex last friday they said I had a dead 02 - Thats my call for whatever its worth.

Ryan

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same EXACT thing is happening to mine!! everytime it was bogging i would floor it and it wuold backfire then hit 3K or sometimes a bit higher then take off!! so a bad 02 sensor?? how much do those run??
 

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Posted by BlacksheepMod50 (Member # 2378) on :
 
About $90 . The thing that sucks is that I was told to replace O2's in pairs so you always know how old they are.... Its an expensive venture. I get a deal through Ford where I can save about 25-30 bux per O2 so I'm going to use that route for me because they are so damn expensive. If you replace yours, let me know if it fixed it because I need to replace mine.

BTW - Have you done any exhaust work recently? I guess thats a dumb question considering you just put a new engine in.. you had to hook your exhaust back up. O2's are extremely sensitive and can go bad if they are jolted, dropped, jarred heavily, banged around etc. I just did my exhaust and since my car has been running like shit. I think i effed mine up when I was swapping them into my new setup.
 

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Posted by Red00GT (Member # 5653) on :
 

quote:

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Originally posted by BlacksheepMod50:
About $90 . The thing that sucks is that I was told to replace O2's in pairs so you always know how old they are.... Its an expensive venture. I get a deal through Ford where I can save about 25-30 bux per O2 so I'm going to use that route for me because they are so damn expensive. If you replace yours, let me know if it fixed it because I need to replace mine.

BTW - Have you done any exhaust work recently? I guess thats a dumb question considering you just put a new engine in.. you had to hook your exhaust back up. O2's are extremely sensitive and can go bad if they are jolted, dropped, jarred heavily, banged around etc. I just did my exhaust and since my car has been running like shit. I think i effed mine up when I was swapping them into my new setup.

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yea i did exhaust work i guess lol..i didnt take out the o2 sensors though..i kept them inside the h-pipe..and didnt take them out. so im not sure...but that is exactly what my car is doing..same as yours. but fuck $90 and thats for only one! hmm maybe ill check under the car and see if anything is loose on the exhuast.
 

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Posted by Red00GT (Member # 5653) on :
 
my car = fuckin bad headache right now!!
 

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Posted by BlacksheepMod50 (Member # 2378) on :
 
Figure out what the problem was yet?
 

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Posted by Red00GT (Member # 5653) on :
 

quote:

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Originally posted by BlacksheepMod50:
Figure out what the problem was yet?

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quote:

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Originally posted by JohnB:
Bad O2. I guarantee you screwed one of them up with leaving them in the pipe instead of removing them. Tools and O2's don't mix...expecially when you try to work around a O2 to unbolt a H/X pipe. I see it ALL the time...

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thank GOD! u replied!! been waitin on you! haha..so bad o2...dammit..guess im replacing them.
 

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Posted by BlacksheepMod50 (Member # 2378) on :
 
Awesome - Glad you got a 2nd opinion on that. So exactly what I was thinking then...

New o2s for me too
 

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Posted by Jdub07 (Member # 2728) on :
 
Seriously $90 is shit on the grand sceme of things. You just popped another motor in your car,...considering all the things that could have gone wrong with that alone I'd be suckin off the o2 sensor gods for only costing $90.

Ps. go to autozone they are cheaper, besides if you can't remember the last time the o2's have been swapped that means it is time for them to be replaced.
 

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Posted by 84GT5.0 (Member # 5227) on :
 

quote:

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Originally posted by two-gun kid:
its vtec, slow at low rpms and it kicks in at higher rpm band, just like vtech

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you post whore lol
 

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Posted by stangnut (Member # 5937) on :
 
changed motor in my car too and the exact same problem sputters below 3 grd.if u floor it, it will pop ,if u let up on the gas it will act better,an do the exact same thing all u guys listed.i did a pin test at the computer.changed injecters,computer,mass air flow,distributer,plugs,compression test, leak down test,fuel flow an pressure test ,cap rotor, coil,multiple timing test,egr,tps,throttle bdy,the only thing i think is that the pop is lean pop cause the plugs looked on the lean side.but i over looked the fuel system to the hilt.the computer is tell it to lean out for somethin.on my buddies smog machine the car is runnin way to clean with no cats.the only thing i aint changed or checked is the o2 sensers.an i did notice that the o2 on 1 side was bit loose like to tighten it an i ain't. but this will be the 3rd time i changed these suckers in the last 2 years. an those times i got codes for them an it still didn't act like this.
 

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Posted by stangnut (Member # 5937) on :
 
well o2 sensors did nada! anybody else?
 

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Posted by JohnB (Member # 969) on :
 
Well, the computer is going to lean out only because it's getting a reading from a few select sensors. O2's, coolant temp, air intake temp, and the spout connector (timing). You all need to do yourself a favor and not throw parts at a problem. Take a systematic approach to the problem and go over the basics first. Air, Fuel, and Spark. If they are all there, as they should be, move on and check other things. If you don't have a code for a bad MAF, why change it? If there is no problem with the TB and TPS sensor and it was set up correctly, why bother with it?

If a car is running way lean on a smog machine (basically testing the A/F ratio) what's that tell you? It's got something to do with the timing. Have you checked the balancer to make sure the ring hasn't spun? Sure sounds like the timing is sitting at about 5-6* BTDC. Hense the pop through the intake and lean condition!
 

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Posted by Spitfiremk24 (Member # 5698) on :
 
this guy should get paid for posting here...
 

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Posted by Jmir018 (Member # 1414) on :
 
yeah.. everytime i have a question and post something.. i pray and hope that jonhb sees it and has a chance to reply..
 

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Posted by TrickRacer50 (Member # 6345) on :
 
exhaust leaks can cause all kinds of surging problems and such, especially around the collectors. Make sure your plugs are in the correct firing order.

If you buy new O2 sensors, get the kit from FordRacing at Summit. It is cheap, because you get new O2 sensors and a bunch of relays and other vital sensors that can cause problems. This kit (below) is cheaper than just buying 2 new O2 sensors.

FMS-M-12071-K302

http://store.summitracing.com/default.asp?Ntt=frod+racing+relay+kit&x=30&y=10&searchinresults=false&Ntk=KeywordSearch&DDS=1&N=115&target=egnsearch.asp

Also, be careful installing O2 sensors, because if you dent them you can ruin them.
 

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