Can cat sensor unplugged cause loss of Vtec?

crigal.bb6 · Post by **crigal.bb6** » Fri Aug 30, 2013 11:39 pm

Just so stumped, tried most things out that could of caused loss of vtec. Wondering if anyone has had this issue before?

bristol_bb4 · Post by **bristol_bb4** » Sat Aug 31, 2013 6:53 am

I wouldn't have thought so, is it earthed on the chassis?

Are you sure the vtec solenoid is gettting a signal from the ecu? Wire in a bulb or buzzer just toi be 100%

Dbo · Post by **Dbo** » Sat Aug 31, 2013 7:46 am

Just solved my no vtec and was speedo. Worth a try.
Rule is up to temp or no go and over 18mph or no go so make sure
Ecu getting these signals......