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Randy Lahey · 07-20-2006, 11:08 AM

hi guy's, this is my first post and i am trying to help my cousin get some information regarding his swap. he has a 98 civic coupe with a jdm 2000 B18B engine with the stock jdm computer.

the Vtec only comes on after driving for 20 mins (average summer weather), it usually won't come on until 4th gear. Then it might work in 1st or 2nd or 3rd but intermittently. 2 different technichians have tried unsucessfully to read the computer. he has replaced the thermostat and there is a crack in the throttle position sensor which needs to be replaced.

is it possible that the crack in the throttle position sensor is causing these intermittent problems or does it have to be something completely different? also does anyone know a good place to buy a throttle position sensor? new or used? i have heard they come complete with the throttle body which is why they are so expensive, can they be purchased seperately?

thanks for the the help.

here is a pic of his car:

newdelsolowner · 07-29-2006, 12:20 PM

As I understand it, operating temp, oil pressure and throttle position are the 3 main requirements for VTEC to engage. Get that TPS replaced!

b18vtecsi · 07-31-2006, 03:51 PM

also clean out the solenoid, both screens.

dbone_vtec · 03-30-2007, 03:13 AM

Yes, New Tps, Clean The Screen To The Vtec Solenoid

And Please Check Your Oil Vtec Lovers. "d"

07-20-2006, 11:08 AM	#1
Randy Lahey Junior Member Join Date: Jul 2006 Age: 34 Posts: 1 iTrader: 0 / 0% Rep Power: 0	B18B swap - intermittent Vtec problems hi guy's, this is my first post and i am trying to help my cousin get some information regarding his swap. he has a 98 civic coupe with a jdm 2000 B18B engine with the stock jdm computer. the Vtec only comes on after driving for 20 mins (average summer weather), it usually won't come on until 4th gear. Then it might work in 1st or 2nd or 3rd but intermittently. 2 different technichians have tried unsucessfully to read the computer. he has replaced the thermostat and there is a crack in the throttle position sensor which needs to be replaced. is it possible that the crack in the throttle position sensor is causing these intermittent problems or does it have to be something completely different? also does anyone know a good place to buy a throttle position sensor? new or used? i have heard they come complete with the throttle body which is why they are so expensive, can they be purchased seperately? thanks for the the help. here is a pic of his car:

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07-29-2006, 12:20 PM	#2
newdelsolowner Junior Member Join Date: Jul 2006 Age: 23 Posts: 4 iTrader: 0 / 0% Rep Power: 0	As I understand it, operating temp, oil pressure and throttle position are the 3 main requirements for VTEC to engage. Get that TPS replaced!

07-31-2006, 03:51 PM	#3
b18vtecsi Junior Member Join Date: Jul 2006 Age: 31 Posts: 4 iTrader: 0 / 0% Rep Power: 0	also clean out the solenoid, both screens.

03-30-2007, 03:13 AM	#4
dbone_vtec HONDA 4 LIFE Join Date: Mar 2007 Location: MASS Age: 29 Posts: 208 iTrader: 0 / 0% Ride: EG drag w/ B18 Rep Power: 8	Yes, New Tps, Clean The Screen To The Vtec Solenoid And Please Check Your Oil Vtec Lovers. "d"

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B18B swap - intermittent Vtec problems