bogging at 5k then goes to 7k?, 3rd gen 3sgte Options

[RUNNIN-LOW]

well i just the new warblo fuel pump and though i solve the boggin problem but then last night i finally took the car out for a full throttle ride..as u know it i free rev the motor to 7500k and it was fine.. took the car out for a full ride on the road as i was gunning it in 2nd gear the car bogged at 5k then went to 7500..did it in third too didnt want to try it any higher gears..anyone have a clue what is going on. i have the 2 bar map boosting only 8psi running everything stock full now till i figure out this problem.

Here is the link to the video:

http://s52.photobucket.com/albums/g22/miss...nt=MOV02577.flv

This post has been edited by RUNNIN-LOW: Mar 30, 2008 - 1:38 PM

[lagos]

How old are your plugs,wires, cap and rotor?
Doesnt the 3rd gen use a 3bar map (or is it a 2.5bar?)?

This post has been edited by lagos: Mar 30, 2008 - 5:07 PM

[RUNNIN-LOW]

well im not really sure ive posted it on the gt4 forums too. ill see what they say about it. anyways how can i get my hands on the 3 bar..or do i have to get a after market 3bar and rigg that to work?

[lagos]

where did you get your map sensor from? did it come with your motor?
how old is your ignition stuff?

[phattyduck]

How old are your plugs,wires, cap and rotor?
Doesnt the 3rd gen use a 3bar map (or is it a 2.5bar?)?

Yeah, the vid sounded like ignition problems... And the 3rd gen motor uses a 2.5ish bar MAP sensor.

If the motor runs fine most of the time, the MAP sensor is probably correct.

-Charlie

[RUNNIN-LOW]

the cap,rotors and coil pack are brand new and the wires are too i got them while i was prepping my motor. when i got my motor the map sensor didnt come with it ( that pissed me off alot too) i got the new map sensor from a 94 mr2 turbo. u guys think it could be my iginitor that is partly brand new? ill double ckeck everything tonight. the car runs fine and yeah only when i push it is when the car boggs. its really confusing for me. haha

[lagos]

check the ecu for codes.

[phattyduck]

i got the new map sensor from a 94 mr2 turbo.

Just in case, you should check the P/N of the MAP sensor on MR2OC to see if it is a 2nd or 3rd gen sensor.

-Charlie

[RUNNIN-LOW]

no codes come up at all and ill check the mr2 forums too see what gen map i got. but for now i anit pushing my car hard at all anyways so its ok for the lag. (for now )

[toyotacrazy]

no codes come up at all and ill check the mr2 forums too see what gen map i got. but for now i anit pushing my car hard at all anyways so its ok for the lag. (for now )

Its sounds like an ignition problem. What brand of cap, wires and rotor are you running? What do your spark plugs look like?

[Driveby]

Like the guys say, sounds like an ignition fault to me. Had this on my GT4 with a set of Blitz spark plugs that only lasted 3,000 miles. Would boost and pull real hard until 5k, then a stumble and cleared at high rpm.
Replaced them with some NGKs and alls been fine for 20,000 miles (got a new set here to go in this weekend)

[RUNNIN-LOW]

ok well i have been running ngk cold plugs with the car every since i got it running. the old ones looked  somewhat used. just put new ones in and tried it out still boggs. im thinking i might just go and get another new set of rotor and cap for the car or go and get a refund for the ones i replace when i got the motor. i think i got 93 alltrac ones. let me try this stuff all over again and see what happens. like lagos said do it halfassed once. do it right the second. haha ooh yeah toyota crazy im running some wierd brand dont even want to say its name but its been working for the mr2 guys up here so im tryin it out ( for cap and rotor, and wires)

[RUNNIN-LOW]

alright well its personal now..the car still boggs like crazy at high rpms. i talk to a toyota and honda tech and they say it might be a fuel problem not sure how it could be just put a warblo in.. im stuck now going to have to take apart my intake manifold, throttle out and see what is going on.

[lagos]

Huh? Why would you take apart your intake manifold?

Did you try replacing your cap/rotor/wires with oem parts?
Did you verify that you bought the correct map sensor?

[RUNNIN-LOW]

ooh meaning by intake manifold is just checking the injectors and plugs and o rings. i also went to toyota and got all oem parts cap/rotor/wires. the map sensor is from a 2nd gen mr2. but i got it cover i called up the place i got the motor from and im having them get a 3rd gen map sensor for me. its really just bugs me but i hardly push my car to the max anyways so it will just sit untill i get everything fixed correctly..

[lagos]

the map sensor is from a 2nd gen mr2

Thats your problem then. A 2nd gen sensor cant properly see the amount of air/boost going into your motor and because of that, the ecu cant apply the correct fuel/timing that it should.

[jazzcornet]

the 94 map sensor is not for the genIII. make sure you have a purple sticker on your map sensor.

[rjbibeau]

bingo

[phattyduck]

the 94 map sensor is not for the genIII. make sure you have a purple sticker on your map sensor.

Not quite. A USDM MR2 94/95 MAP sensor is a gen2 (ie, incorrect). A '94+ JDM or other market 3s-gte MAP sensor should work.

-Charlie

[jazzcornet]

the 94 map sensor is not for the genIII. make sure you have a purple sticker on your map sensor.

This post has been edited by jazzcornet: Apr 25, 2008 - 1:29 PM