help rev issue

[chopac10]

The motor was running properly 8 months ago but i left the car untouched after that. when we decided to rebuild the engine and the corolla(change oil, change coolant, change belts, newly installed External fuel pumps and filters) in short the engine was reconditioned once again.After the rebuild, engine starts after several tries the idles at 1.2k Rpm due to cold start.But when we tried to rev the engine it was dying and it wont go pass 3k rpm..so we replaced all gaskets in the intake manifold and the throttle body but to my disappointment the problem is still there.. Motor specs was TVIS Head assembly+7 rib japan block and currently using a High horse ECU..

Hope to help me with this matter.TIA!

[Davegt27]

Check connections

Almost all air has to go through the AFM if it is left disconnected the car will start and idle but won’t rev properly

[chopac10]

im using a MAP sensor and checked all connections.could it be a faulty TPS?

[chopac10]

i tried to unplug the socket of theTPS then it revs fine with little chocking but it revs fine though.

[chopac10]

any more ideas please help

[allpr0h]

i would suspect deffective air sensor maf or map
or then maybe wrong distributor wiring or faulty ecu.. but i would be surprised the ecu

dunno..

[chopac10]

i would suspect deffective air sensor maf or map
or then maybe wrong distributor wiring or faulty ecu.. but i would be surprised the ecu

dunno..

have checked the MAP sensor too it works fine..the ecu works fine too

[apsogosGTi]

have you checked your advance timing at 10tdc with the ecu diagnosis wire connected?

[chopac10]

have you checked your advance timing at 10tdc with the ecu diagnosis wire connected?

nope coz i have no ECu diag wires..we just manually set it at 15deg TDC

[apsogosGTi]

have you checked your advance timing at 10tdc with the ecu diagnosis wire connected?

nope coz i have no ECu diag wires..we just manually set it at 15deg TDC

there are no special wires ...you can cut a small cable by yourself....do you want help with where you should connect the wires and get in ecu diagnosis mode ?

[allpr0h]

jeez

are you sure injectors are firing?
how comes/what means "because of cold start"

is the engine running fine when its running?
if you rev the engine anywhere below 3k its reacting normally?
what happens when you say "is dying"?

post a video... if the engine hardly keeps going i think its maybe related to distributor or timing, but if problem with distributor im pretty sure ecu will say something in diagnostic mode.
confirm diagnostic mode and timing, maybe take the time to film it and post a video..

[chopac10]

have you checked your advance timing at 10tdc with the ecu diagnosis wire connected?

nope coz i have no ECu diag wires..we just manually set it at 15deg TDC

there are no special wires ...you can cut a small cable by yourself....do you want help with where you should connect the wires and get in ecu diagnosis mode ?

oh yes that would be a great help thanks for that bro.

[chopac10]

jeez

are you sure injectors are firing? YES
how comes/what means "because of cold start" ???

is the engine running fine when its running? NOPE. CANT OPEN THE THROTTLE QUICK ENOUGH COZ IT WILL CHOKE AND DIE. BUT IF YOU PRESS THE ACCELERATOR WITH A LIGHT FEET AND RPM SLOWLY GAINS GOOD

if you rev the engine anywhere below 3k its reacting normally? NOT WITH OPENING THE THROT QUICKLY

what happens when you say "is dying"? ITS LIKE THE RPM IS GOIN WAY DOWN WHEN I ACCELERATE OR OPEN THE THROTTLE

post a video... if the engine hardly keeps going i think its maybe related to distributor or timing, but if problem with distributor im pretty sure ecu will say something in diagnostic mode. OK ILL TRY TO POST IT TODAY

confirm diagnostic mode and timing, maybe take the time to film it and post a video..

OK thanks a lot this forums make my mind at ease with lots of people trying to help.makes me feel good

[chopac10]

btw i am running on TVIS head largeport with hihorse throttle body and a jdm 7ribs block hicomp and currently using a MAP sensor and a Hicomp ECU

[chopac10]

here is the video====http://youtu.be/I1KU30W5qXA
another one ====http://youtu.be/3KWYPY_RDrA

[yoshimitsuspeed]

What TPS are you using? Are you sure it's compatible with your ECU?
Has it been properly adjusted?
Have you tested it to make sure it's working properly?
Do you have a FSM for the ECU?
If you don't then start by getting one. If you do then go through all the diagnostic and troubleshooting sections pertaining to your issue.

[apsogosGTi]

What TPS are you using? Are you sure it's compatible with your ECU?
Has it been properly adjusted?
Have you tested it to make sure it's working properly?
Do you have a FSM for the ECU?
If you don't then start by getting one. If you do then go through all the diagnostic and troubleshooting sections pertaining to your issue.

+10 !!!

and if you need video for adjusting the tps , tell me so ! i can send you a link !

[chopac10]

Problem solved..its just that the fuel regulator is weak.installed an aftermarket and she's doin good now.. thanks club4ag and to all you guys who reached out!

Cheers!

[apsogosGTi]

thanx God! We are happy that your pain was solved mate!

[chopac10]

thanx God! We are happy that your pain was solved mate!

Thanks bro..ygpm