Question about 1996 Nissan 200SX

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Car wont rev past 2500rpm

New fuel filter and presure regu;ator new EGR valve new idle air bypass valve as well no check engine light

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  • Anonymous Mar 24, 2014

    daewoo tacuma new egr vvalve just fitted car goes very well

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That maybe what the rev limiter is set for.That way you can not over rev causing engine damage.

Posted on Sep 12, 2008

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Check the throttle cable. or rev it manually on the TBI

Posted on Apr 23, 2009

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Check that your air flow meter is all connected properly and if its turbo check that your intercooler pipeing is all plumbed up

Posted on Jan 09, 2009

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2 Answers

Engine runs rough wont idle in drive


1. replaced the air filter
2. replaced the PCV valve
3. inspected the PCV hose and connectors (nothing wrong)
4. ran a tank of gas with fuel injector cleaner
5. tested the EGR valve by pulling the vacuum hose off the top, and blocking the hose. The idle didn't smooth out. I applied a vacuum to the EGR valve manually and the car immediately stalled which tells me that the EGR valve itself is working fine.

Jul 05, 2014 | Ford Focus Cars & Trucks

1 Answer

Over fueling at Idle/low revs causing rough run and engine stall suddenly.


Possible causes of your issue:
  1. Clogged air filter
  2. Bad fuel pressure regulator (most likely)
  3. Sticky idle air controller (also likely)
  4. Burned or stuck EGR valve, or bad EGR solenoid
  5. Bad throttle position sensor (especially if the "Check Engine" light is on or flashing)
  6. Bad oxygen sensor (especially if the "Check Engine" light is on)
  7. Water in fuel or bad fuel
What to do:
  • Start by removing the air filter to see if the problem persists. If the air filter is dirty, replace it.
  • Next, verify that the Check Engine light is operating by turning the key ON but not starting the vehicle. The Check Engine light should be illuminated. If not, replace the Check Engine light bulb.
  • If the Check Engine light is ON when you start the car, try feathering the accelerator pedal to see if the base idle stabilizes or changes. If it does, replace the TPS (Throttle Position Sensor). This is a fairly inexpensive part.
  • If the Check Engine light is FLASHING, or ON, next you will need to have a local mechanic or your local auto parts store attach an ODB scanner to determine what error codes are present. This will help you pinpoint the issue.
  • Once you have pinpointed and corrected any issues present using the ODB codes, you will need to attach a FUEL PRESSURE GAUGE to the fuel rail test point to determine if the fuel pressure is correct. If it is too high, the FUEL PRESSURE REGULATOR has failed. Again, this is an inexpensive part but the fuel system pressure must be released before servicing this part. Best done by a qualified mechanic.
  • HAS THE CAR SAT UNUSED FOR A PROTRACTED AMOUNT OF TIME WITHOUT FUEL BEING REMOVED OR ADDED? If so, the condition you are describing may be a result of bad fuel. Modern fuels contain ethanol, which causes moisture to condense in the tank when it is not agitated. This can cause water to build up in the fuel, and causes the fuel system to rust as well as an idle issue that resembles what you are describing. Try adding new fuel, and add a full bottle of FUEL SYSTEM WATER REMOVER. Remember: IF FUEL IS ALLOWED TO SIT IN YOUR VEHICLE'S TANK (without new fuel being added) FOR MORE THAN SIX MONTHS, IT WILL GO BAD.

Apr 18, 2014 | 2002 Ford Escape

2 Answers

Rough idle 95 astro van, I did a full tune up , plugs,wires,cap, rotor,air filter,and fuel filter and cleaned egr vavle.


I actually had to replace my EGR valve and the gasket. I clean the valve well and reused both. I don't think the gasket sealed well enough though. So I went ahead and got a new valve, gasket and changed them. It runs a lot smoother now.

Dec 14, 2012 | 1995 Chevrolet Astro

1 Answer

Rough idle and loss of power 1988 s10 4.3


Did you test any of those parts before you replaced them ?
Have you checked the cap, coil, and distributor yet ?
The distributor has a module and a pickup coil inside that could be faulty.
Is the check engine light on ?

Oct 07, 2012 | Chevrolet S 10 Cars & Trucks

1 Answer

1995 chevy tahoe 4wd. 5.7 liter when cooled down, starting is normal . Right after, engine almost stalls but Idle air control kicks in and keeps it running. eventually it is idling but rouph. On...


If your vehicle has one, and I think it does, check your EGR system. If the egr valve is full of carbon, it can be partially open, creating a vacuum leak. If the egr valve solenoid is bad, it could be opening the valve at the wrong time, also creating a vacuum leak. Unplug the egr vacuum hose, plug the open end of the hose and start it and see what it does. A picture of the egr is below.
3_11_2017_5_29_14_am.jpg

Mar 11, 2017 | 1995 Chevrolet Tahoe

1 Answer

Check engine error code PO174


A PO174 LEAN CODE FOR BANK 2 IS THE CYLINDER BANK ON THE LEFT SIDE OF THE ENGINE
(THE CYLINDERS FACING THE FRONT OF YOUR CAR)
A LEAN FUEL CONDITION COULD EXIST IF THE ENGINE IS GETING
TO MUCH AIR AND/OR NOT GETING ENOUGH FUEL
THIS CAN CAUSE MISFIRE, ROUGH IDLE, AND HESITATION WHEN ACCELERATING
THIS COULD BE
A VACUME LEAK, A DIRTY AIRFLOW SENSOR,
A EGR VALVE NOT CLOSING LEAKING EXHAUST INTO THE INTAKE MANIFOLD
IF ITS NOT GETING ENOUGH FUEL THE FUEL PUMP COULD BE BAD, THE AIR FILTER COULD BE DIRTY
OR IT COULD BE DIRTY INJECTORS
ID TRY FUEL INJECTOR CLEANER AND A NEW AIR FILTER FIRST
THEN TRY CLEANING YOUR EGR VALVE. COPY THIS LINK TO YOUR BROWSER FOR
STEP BY STEP INSTRUCTIONS TO DO THIS.
www.ehow.com/how_4809842_clean-ford-taurus-egr-valve.html

IF THIS DONT DO IT I WOULD TAKE IT TO A MECHANIC TO HAVE THE OTHER THINGS CHECKED
HOPE THIS HELPS.

Dec 21, 2010 | 2001 Ford Taurus

3 Answers

1995 chevy 350 egr valve problem, i just replaced the new egr valve and it has less proplems now. when the engine is warm after 10 mins of riding, it still has a proplem when slowing down, engine stops....


SOUND LIKE FAULTY IDLE AIR CONTROL MOTOR.TAKE VECHICLE TO GARAGE LET THEM SCAN VECHICLE.IF IDLE SPEED CONTROL FAULTY.IT HAS TO BE REPLACED AND REPROGRAMMED.

Oct 07, 2010 | Cars & Trucks

1 Answer

Check engine light on egr code


Check the EGR valve for functioning:

COMPONENT TESTING DPFE Sensor
  1. Disconnect the pressure hoses at the DPFE sensor.
  2. Connect a hand vacuum pump to the downstream pickup marked REF on the sensor.
  3. Using a multimeter, backprobe the SIG RTN circuit at the DPFE connector.
  4. With the ignition ON, signal voltage should be 0.20-0.70 volts.
  5. Apply 8-9 in. Hg of vacuum to the sensor. Voltage should be greater than 4 volts.
  6. Quickly release the vacuum from the sensor. Voltage should drop to less than 1 volt in 3 seconds.
  7. If the sensor does not respond as specified, check the power and ground circuits.
  8. If power and ground circuits are functional, the sensor is faulty.
EVR Solenoid
  1. Remove the EVR solenoid.
  2. Attempt to lightly blow air into the EVR solenoid.
    1. If air blows through the solenoid, replace the solenoid with a new one.
    2. If air does not pass freely through the solenoid, continue with the test.
  3. Apply battery voltage (approximately 12 volts) and a ground to the EVR solenoid electrical terminals. Attempt to lightly blow air, once again, through the solenoid.
    1. If air does not pass through the solenoid, replace the solenoid with a new one.
    2. If air does not flow through the solenoid, the solenoid is OK.
  4. If the solenoid is functional but the problem still exists, check the power and ground circuits.
EGR Valve
  1. Install a tachometer on the engine, following the manufacturer's instructions.
  2. Detach the engine wiring harness connector from the Idle Air Control (IAC) solenoid.
  3. Disconnect and plug the vacuum supply hose from the EGR valve.
  4. Start the engine, then apply the parking brake, block the rear wheels and position the transmission in Neutral.
  5. Observe and note the idle speed. NOTE: If the engine will not idle with the IAC solenoid disconnected, provide an air bypass to the engine by slightly opening the throttle plate or by creating an intake vacuum leak. Do not allow the idle speed to exceed typical idle rpm.
  6. Using a hand-held vacuum pump, slowly apply 5-10 in. Hg (17-34 kPa) of vacuum to the EGR valve nipple.
    1. If the idle speed drops more than 100 rpm with the vacuum applied and returns to normal after the vacuum is removed, the EGR valve is OK.
    2. If the idle speed does not drop more than 100 rpm with the vacuum applied and return to normal after the vacuum is removed, inspect the EGR valve for a blockage; clean it if a blockage is found. Replace the EGR valve if no blockage is found, or if cleaning the valve does not remedy the malfunction. ---

Sep 24, 2010 | 2000 Mercury Cougar

1 Answer

Check engine light on auto zone read codeP0404 replaced egr valve,air filter, added sea foam, and high octane booster. car still has check engine light on reading same code will not accelerate hesitates if...


When it revs high, is it down shifting? if so you may be running out of gas. low fuel pressure or lack of fuel getting to the injectors. (fuel filter)

May 02, 2010 | 2002 Chevrolet Impala

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