Why do the revs drop when I come off the accelerator?
The main reason was because it’s started happening at higher speeds now (revs drop to idle when going 65mph but only within first 5 minutes of driving the car from cold) They said it’s working as designed in the lower speeds and it doesn’t drop back to idle at higher speeds so that the revs are available for overtaking.
What happens when the engine is at idle?
Loco, most of the time! Not sure what age your car is, but if the engine is at idle you are essentially coasting and not receiving any engine braking at all. This is not a good idea, down hills you will only have your brakes to slow you. When you accelerate, is there a thump, jerkiness or any other strange happenings.
When do you disengage the Turbo what happens to the Revs?
revs as well…..What you are describing as being ‘disengaged’ is the turbo and the gear change which usually occur at the same time. As soon as you go above 60km/hr leave the throttle you will feel the 4th gear kicking and the revs immediately drop into idle. I hate that aswell.
How often does engine RPM drop when idle?
The engine stays idling at about 1000 RPM. However every now and then it drops down to about 500 RPM and then quickly back up to about 1200 then goes slowly down to 1000 and stays there for a bit until I go again or it drops again. It only happens for a second or two and about 3 times a minute.
What does it mean when idle control does not increase?
If the engine idle does not increase, it means there is an issue at the idle control motor of its circuit preventing the signal from changing the idle. You can purchase a bidirectional scan tool at your local auto parts store. Make sure the wiring harness is firmly connected to the idle control motor before conducting this test.
How can I tell if my idle control valve is working?
To check if an idle control valve is working properly, start by turning on your engine and letting it run for a minute or 2. Then, when it’s at an idling speed, take note of the RPMs in your car. Next, turn the engine off and disconnect the idle control motor under your hood.
How often do you change the idle on a Subaru?
Wait 10-15 seconds so the electronic throttle body or IACV has time to go to the factory programmed home position. 6) Every 20 seconds or so the idle will be adjusted up and down as the ECU tries to adjust it towards a stoichiometric fuel / air mix.
The main reason was because it’s started happening at higher speeds now (revs drop to idle when going 65mph but only within first 5 minutes of driving the car from cold) They said it’s working as designed in the lower speeds and it doesn’t drop back to idle at higher speeds so that the revs are available for overtaking.
When does my car stop revving without the accelerator?
Mine hangs revs at about 1500rpm when clutch is depressed sometimes. Will either drop to idle on its own after a few seconds or just sorts itself out when you move off again. Had it checked, ecu reset, no joy.
What happens if you hit the rev limiter too often?
The rev limiter on an engine is put in place to keep you from damaging your engine. If you hit the rev limiter once or twice you likely won’t do much harm to your engine but if you are regularly banging off the rev limiter before shifting you risk damaging your engine. Is Redlining Your Car Bad For Your Engine?
What happens when you rev your car to high rev range?
Your engine will be most efficient and use the least amount of gas while at idle. So anytime you rev your engine to the high rev range you will be using more gas than you would if you let your engine idle.