Weird vtec problem. Please help..

[1slowEF]

So I bought a 91 Civic with a 94 GSR swap. Vtec will only work if directly connected to a toggle switch and will bog in and out of vtec at around 6k +. Always done this since I've had it. Any ideas?


Things changed/checked.
Oil is fine.
Rewired vtec and other sensors.
Changed vtec selonoid.
Tried other virgin/chipped ecu's.
Running str8 pipe, so no cat.
And only CEL on throwing is 6 Engine coolant temp sensor, and thats because it's not plugged in.


Things that I think can cause the problem.
Preety bad dented oil pan.
Don't know the condition of either oil pump or oil pick up.
And maybe fuel, even tough fuel gauge reading 50 at idle.

Please help..

 

[AHHVTEC]

weird it sound like it dont have a vtec ecu,,

 

[1slowEF]

im running a chipped p28, and have ran other chipped p28's.

 

[1slowEF]

could that be causing the boging?

 

[hatukazi]

if you dont plug in your coolant temp sensor you will not have VTEC because the car will be in limp mode.

 

[1slowEF]

Fixed the sensor, so no more CEL. Also vtec works propely now, no more vtec button. But is still has the same problem..

 

[AHHVTEC]

Fixed the sensor, so no more CEL. Also vtec works propely now, no more vtec button. But is still has the same problem..

and what problem is that

 

[1slowEF]

bogging in and out of vtec..while in vtec..

 

[AHHVTEC]

id try checking your oil pressure

 

[1slowEF]

how? with what?

 

[AHHVTEC]

how? with what?

a oil pressure gauge

 

[1slowEF]

were do i connect it to?

 

[GSTurbo]

i had the same problem with my b17, could never figure it out, made no sense

 

[13PROJECT240SX]

Umm Ummm Do U Feel The Motor Has Lost Power When U Drove A Civic W/ 94 Gsr Motor Swap ? Cause I Had A 95 Honda Civic Coupe W/ 2001 Acura Gsr Motor Swap.. So 1st All I Want To Know If U Feel The Motor Don't Give U A Power On The Wheel ?

 

[13PROJECT240SX]

Umm Ummm Do U Feel The Motor Has Lost Power When U Drove A Civic W/ 94 Gsr Motor Swap ? Cause I Had A 95 Honda Civic Coupe W/ 2001 Acura Gsr Motor Swap.. So @ 1st All I Want To Know If U Feel The Motor Don't Give U A Power On The Wheel ?

 

[GSTurbo]

English

 

[13PROJECT240SX]

English

Ugh-huh what do you mean ?

 

[Superwho05]

my ls-vtec did the same thing, turned out to be an oil pressure problem. if you know your oil pump is good, try changing brand of oil lol. I know it sounds weird, but for some reason, Castrol GTX 10W-40 did the trick way better than Penzoil. I def. wouldnt go thicker than 10W-40 though

 

[LS_VTEC]

Is it wired to obd1 or is it the usual obd0 with the obd1 jumper harness? What ecu?

 

[13PROJECT240SX]

my ls-vtec did the same thing, turned out to be an oil pressure problem. if you know your oil pump is good, try changing brand of oil lol. I know it sounds weird, but for some reason, Castrol GTX 10W-40 did the trick way better than Penzoil. I def. wouldnt go thicker than 10W-40 though

MOBILE 1 =)


10w30 can use it on gsr ?