What should I do if I have a VTEC problem?
In either case, the manual recommends changing the engine oil and filter at the same time to prevent further contamination. The VTC Oil Control Solenoid Valve also appears to have screens that could clog. Click to expand…
Why is my VTEC switch not working properly?
Make sure you check your oil level ASAP as some VTEC DTCs are set due to a loss of oil pressure due to low oil levels. The misfire DTC’s can be disregarded until the VTEC system is operating correctly. Well, I took it back to the dealer where I bought it and they told me it was the oil pressure switch.
Why does my Honda VTEC go into fuel cut mode?
If the pressure switch signal is not logical for the commanded state of the control solenoid, a DTC will set and the PCM will go into a ‘fuel-cut’ mode limiting engine rpm and performance. The PCM simply doesn’t ‘know’ what the state of the intake valves are, so you end up with the symptoms you describe.
How does the VTEC work on a Honda Accord?
It accomplishes this by turning a control solenoid ‘ON’ to allow oil pressure into the VTEC control passages to apply pins that will lock the intake rockers. When the oil pressure is present, the pressure switch signal will go high. When the control solenoid is turned ‘OFF’, the oil pressure is dumped and the oil pressure switch signal will go low.
In either case, the manual recommends changing the engine oil and filter at the same time to prevent further contamination. The VTC Oil Control Solenoid Valve also appears to have screens that could clog. Click to expand…
Make sure you check your oil level ASAP as some VTEC DTCs are set due to a loss of oil pressure due to low oil levels. The misfire DTC’s can be disregarded until the VTEC system is operating correctly. Well, I took it back to the dealer where I bought it and they told me it was the oil pressure switch.
If the pressure switch signal is not logical for the commanded state of the control solenoid, a DTC will set and the PCM will go into a ‘fuel-cut’ mode limiting engine rpm and performance. The PCM simply doesn’t ‘know’ what the state of the intake valves are, so you end up with the symptoms you describe.
What causes a VTEC control solenoid to go bad?
If your fault is NOT due to a faulty pressure switch, or an electrical circuit fault to or within the PCM, then it is either a bad VTEC control solenoid, sludge clogging the oil circuit OR low oil pressure / oil starvation. Good luck! IT IS ALREADY BROKEN DOWN AGAIN!!! The dealer where you bought it? A non -Honda dealer, right? Click to expand…