VTEC ISN'T ENGAGING!!!!HELPPPP
 

hey whats up guys i bought a 99 jdm gsr swap to put into my eg hatch, i put it in and vtec isnt engaging at all, the check engine light is on, i checked the code and it said code 6, which is the coolant temperature sensor, all the vtec wiring is good, but do u think the check engine light has sumthin to do with it? i was told my car doesnt even need that sensor because its obd1
could it be that im using a obd1 usdm gsr ecu? should i use the jdm ecu which is obd2?

there are 2 wires coming out of the harness near the vtec solenoid, which run along with the vtec wiring , these 2 wires are black and red, n those r supposed to be the coolant sensor temperature wires..................man sum1 help!!!!!!!! https://honda-tech.com/forums/images/smilies/emsad.gif

Re: VTEC ISN'T ENGAGING!!!!HELPPPP (MURDERHATCH)
 

CEl can definately cause VTEC to not work!

Re: VTEC ISN'T ENGAGING!!!!HELPPPP (sleeperHatch)
 

the coolant temp sensor is a part of vtec, the ECU wont engage vtec till the engine is at a normal operating temprature. so if the ECU dosent know what temprature the engine is, no vtec.

fix that problem, you fix vtec.

Re: VTEC ISN'T ENGAGING!!!!HELPPPP (Kamin)
 

thanx alot man, but can u tell me where the coolant sensor goes connected into?
i have 2 wires that are spliced out near the vtec harness, they are red and green, i was told these are the coolant sensor wires
also, should i be using the jdm ecu which is obd2 or can i still use the usdm obd1 wcu
the motor is a jdm 99 gsr
thanx man

Re: VTEC ISN'T ENGAGING!!!!HELPPPP (MURDERHATCH)
 

if i remember correctly the wires go some where under the dizzy and vtec. the sensores look like pins

Re: VTEC ISN'T ENGAGING!!!!HELPPPP (sullenht)
 

how do you get the codes on the ecu when the check engine light is on?

Re: VTEC ISN'T ENGAGING!!!!HELPPPP (type-t)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by type-t &raquo;</TD></TR><TR><TD CLASS="quote">how do you get the codes on the ecu when the check engine light is on?</TD></TR></TABLE>

http://we-todd-did-racing.com/wetodd...ZmQzMXk1NDE%3D

Re: VTEC ISN'T ENGAGING!!!!HELPPPP (MURDERHATCH)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MURDERHATCH &raquo;</TD></TR><TR><TD CLASS="quote">thanx alot man, but can u tell me where the coolant sensor goes connected into?
i have 2 wires that are spliced out near the vtec harness, they are red and green, i was told these are the coolant sensor wires
also, should i be using the jdm ecu which is obd2 or can i still use the usdm obd1 wcu
the motor is a jdm 99 gsr
thanx man</TD></TR></TABLE>

Under the distributor there are 2 sensors. One is the fan switch which is threaded into the motor and has 2 wires coming out of it. The other is a smaller sensor that has one wire coming out of it, this is the coolant temp sensor. This wire needs to be run to your ecu.