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When started engine goes to full revs closing throttle has no effect

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Maybe your throttle is electronic and when you start it opens itself fully and goiing full throttle revs

Posted on Apr 16, 2014

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VORTec 5.7L. backfires at startup and now it goes to full throttle...why


These vortec engines are prone to leak fuel from fuel pressure regulators inside the intake manifold ,an from injector pop it valves . How to replace the spider injector on Cheyv motor 4 3 or 5 7 liter check out this guys video

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Revs high when i change gear


Is it possible the clutch pedal is interfering with the throttle? Start the engine in neutral and allow it to idle. Press only the clutch pedal down and see if this increase the engine speed. If it does speed up the engine and slows back down when you release the clutch then somehow this operation is where your fault lies. If it doesn't alter the idle speed, then rev your engine and release the throttle to see if it returns to idle immediately. If it is slow to return to idle then your throttle cable could be sticking. This means when you change gear lifting off the throttle has little effect and depressing the clutch to change gear causes the engine to race as the throttle is still partially open.

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I have Civic 2001 with 160,000 miles on it. i have problem when i am driving on high way on 80/mph rpm stay on 2800 and after 5 minuts rpm goes to 3500 and i feel loud noise like engine is taking more...


If the car type is manual transmission:
- Perform the clutch and pressure plate test.
PROCEDURE:
- Pull up the hand brake, shift the lever to 1st gear, rev up to 2000 rpm, release the clutch pedal at once.
- If the engine does not stall, replace the clutch, pressure plate, clutch bearing, regrind the fly wheel and pressure plate precisely.
- If the engine stalls, the clutch system is OK and do not need any clutch system repairing.
- If the clutch system is OK, check vacuum leaks through intake manifold, vacuum hoses, PCV valve and throttle control cable adjustment, MAP sensor and Throttle Plate Position sensor adjustment (9.8 percent or 0 degrees at TP sensor fully closed position).

If the car type is automatic transmission:
- Check the transmission control cable adjustment.
- Check vacuum leaks through intake manifold, vacuum hoses, PCV valve and throttle control cable adjustment, MAP sensor and Throttle Plate Position sensor adjustment (9.8 percent or 0 degrees at TP sensor fully closed position).
- Check the Automatic Transmission Fluid level in the transmission with the car on level floor, engine start, gear lever in P.
If the problem persists, contact a competent technician or service personnel.

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Replaced head gasket now vehicle revs to full throttle when started


check your throttle postioning sensor or just see if when you replaced the gasket if you moved the throttle cable out of position

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The accelerator pressed does not give full rpm


just about all cars with a computer have a rev limiter so you don't over rev it spinning a engine without a load is more harmful then with one this is normal

Apr 20, 2012 | Cars & Trucks

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My tuscon revs it's RPMs while I'm driving and the drops back down. It's happening pretty often. But check engine light doesn't come on


Clean the throttle interior and throttle plate edge. It is likely that oil deposits are lining the throttle opening and this causing the plate to stick so that when you press of the accelerator the throttle plate stays closed and then pops fully open leading to the is surge and slow effect.

Mar 22, 2011 | Hyundai Tucson Cars & Trucks

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1991 audi v8 quattro


i would check the throttle butterfly for a carbon build up that may keep it from closing completely. have seen this cause stalling when returning to idle rpm. Best to try to remove and clean from both sides to get good results.this is just one of many possible problems. Hope it helps if so please let me know with a reply and good luck

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My engine wont rev on kickdown 1989 corvette


your torque convrtoer is shot. it is the at the front of the tranny to transfer motion from fly wheel ( engine side) to the trans. its a fairly cheap and easy fix.

Apr 06, 2009 | 1989 Chevrolet Corvette

1 Answer

Engene surges when foot flat to the floor


Hi,.. is your car manual or auto transmission,??..maybe..if car is at full throttle /full revs,./the rev limiter will make car engine pulsate to help protect from damage

Jan 17, 2009 | 1995 Mitsubishi Diamante

2 Answers

Engine revs to high


You definitly have to check the cable installation/adjustment. Remove the air cleaner and with the engine off, advance the throttle to full open and then let it snap closed. The throttle plate should come completely closed. Also check your linkage to make sure that the progressive linkage is not hanging on the high steps oft the choke linkage. This could also have been affected by the cable installation.

Question, did the problem occur after the cable installation? If so, this is the area of your problem.
Bill

Nov 19, 2008 | 2000 Mini Cooper

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