Question about 1993 Nissan NX

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Motor hesitates between 2000 & 3000 RPM. Above 3000 RPM runs fine. Car is 5 speed manual & fuel injected. Have checked &/or replaced following: -Ignition leads. -Distributor cap & rotor. -Spark plugs. -Air filter. -Fuel filter. -Fuel injectors. -Vacuum hoses. -Air intake censor cleaned.

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  • Expert
  • 108 Answers

Clean the throttle body. Check the mass air flow sensor for corrosion of the wire harness connector.

Posted on Jan 03, 2018

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
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Posted on Jan 02, 2017

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SOURCE: My 1993 Nissan Sentra GXE

Have you checked your MAF? Sentra's are famous for them having problems, I havent had an issue with mine yet thank god.

Posted on Oct 03, 2008

  • 599 Answers

SOURCE: Service Engine Soon Light and Rough Idle (Below 1200 rpms)

do you get check engine codes?..have you done a leak down test and compression test to determine mechanical engine health?

Posted on Oct 07, 2008

  • 1 Answer

SOURCE: 95 GMC Jimmy 4.3l W vin rough idle

My problem was solved when I repaired my 4 wd activation dash switch. The switch was contacting on 2WD & 4HI at the same time. The front differential activation is vacuum activated possibly creating a tug of war that didn't actually engage it but drained off vacuum from the engine? A theory at best but stumbbled across it because I knew the switch wasn't working properly I repaired it and low and behold rough idle disappeared and all is good for 3 weeks running.

Posted on Dec 10, 2008

stephanos18
  • 144 Answers

SOURCE: Replacement of Spark Plug leads, Distributor cap, rotor for T100

I reccommend putting WD40 or CRC on the connections to stop them corroding over time. You also want to make sure the Distributor Cap gasket seals well to keep out water. last make sure you don't get the leads mixed up, best to replace them one at a time. cheers

Posted on May 17, 2009

csmock132
  • 4669 Answers

SOURCE: 1989 GMC 2500 5.7L - engine surges and stalls at idle. Loses power at cruising speed.

Wow you have replaced a lot of stuff. Lets go back to the Fuel pump. When you replaced it did you replace the hose between the pump and the sending unit. These are common for splitting. Have you hooked up a fuel pressure gauge to check what pressure you have? It should be real close to 13 psi and should raise to at least 18 or 19 when you pinch off the return line.

Posted on Jun 02, 2009

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How to check the idle speed? my car stalls at the light


Hello Patricia Kennedy.

Besides a dirty air filter... listed below... idle air control valve... the idle speed is pretty tamper proof...

If the car has not been tuned up RECENTLY... that would be a STRONG recommendation before fine-tuning the idle speed.

The problem I am seeing ALL OVER the web... is the idle is too fast... (absolutely will cause STALLS).

All things being reasonable... your tachometer should show an RPM OF 650 to 1000 rpm... above that is quite EXCESSIVE...

A real TUNE-UP MANUAL would be required to properly set the SPEED ... but only after EVERYTHING had been serviced, cleaned and replaced...

Tuning up a car with DIRTY FILTERS & WORN spark plugs is an WASTE of MONEY!!

What I am seeing EVERYWHERE... is a HIGH IDLE problem... (above 2000 RPMs... That will ABSOLUTELY cause your car to stall at a STOP... because your TORQUE CONVERTER is designed to lock up (quit acting like a clutch)...

If your idle speed it above 1000 rpm... that WAS a BIG RECALL issue for GM engines...

Check out the links below... a high idle can stall an engine better than a low one...!!

Comment me back if I am not being particularly clear... or wwatch some of the videos I have attached.

Good luck.


More Information for ACDELCO A1208C
2005 buick rendezvous idle setting Bing video More Information for STANDARD MOTOR PRODUCTS AC5T

Mar 29, 2016 | 2005 Buick Rendezvous

1 Answer

Driving on the road the RPM goes higher wituout speedind


Check out related help links to troubleshoot these problem:----Click the link below:---Idles Fine but RPM jumps in drive mode?http://technoanswers.blogspot.in/2012/07/idles-fine-but-rpm-jumps-in-drive-mode.html
---------Mitsubishi Lancer rpm needle bounces?http://technoanswers.blogspot.in/2012/02/mitsubishi-lancer-rpm-needle-bounces.html
--------How to adjust rpm on 2009 dodge charger SRT8?


http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html
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Engine cuts out at 3000 RPM?http://schematicsdiagram.blogspot.com/2011/12/engine-cuts-out-at-3000-rpm.html

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Cold start problem and vehicle shudder around 2500 to 3500 rpms
http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html

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High rpm in neutral? Inconsistant high RPM in neutral?http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html

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Jetski Sputters and Low RPM? http://whatisbyme.blogspot.in/2012/07/jetski-sputters-and-low-rpm.html

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Fuel Injection Problem And RPM suddenly increaseshttp://whatisbyme.blogspot.in/2012/07/fuel-injection-problem-and-rpm-suddenly.html

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2005 Toyota Highlander: Engine runs hard RPM below 3000?http://whatisbyme.blogspot.in/2012/05/2005-toyota-highlander-engine-runs-hard.html

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1987 Toyota Camry: RPM Drops going Up hills?http://whatisbyme.blogspot.in/2012/05/1987-toyota-camry-rpm-drops-going-up.html

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Cruise Control stops working, Excessive cranks to start the engine and RPM goes max 2500 http://whoisbyme.blogspot.in/2012/07/cruise-control-stops-workingexcessive.html

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1990 Toyota 4Runner: Engine cuts off when reaches 2000 RPM?


http://whatisbyme.blogspot.in/2012/05/1990-toyota-4runner-engine-cuts-off.html

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1999 Toyota Camry: Erratic stalling and high engine RPM at idle?


http://whatisbyme.blogspot.in/2012/05/1999-toyota-camry-erratic-stalling-and.html

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1995 Toyota LS: Misfire at idle or low RPMhttp://whatisbyme.blogspot.in/2012/04/1995-toyota-ls-misfire-at-idle-or-low.html

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Lexus RX: Tapping noise under Valve Cover At Low RPM?http://technoanswers.blogspot.in/2012/04/lexus-rx-tapping-noise-under-valve.html

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These will help.
Thanks.

Nov 22, 2012 | 2008 Toyota Avalon

1 Answer

I have lost power in the motor it wil not go over 2,5-3000 rpm 2000 mod diesel 2,5 manuell gear,it has gone 250000km i have change air and diesel filter,i feel it there is a fuel problem,but i dont...


I had the same thing on my 205 diesel and it was the fuel pump filter.It is found under the car towards the rear in the centre.I replace it and it was fine

Feb 16, 2011 | 2000 Chrysler Grand Voyager

1 Answer

Under 2000 rpms runs bad/hesitates/check engine light


This IAC valve runs only when your foot is off the gas pedal. Mainly to keep the engine from stalling and keeping it at a safe RPM. If it is running bad under 2000RPM, more than likely its the IAC valve or a vacuum leak. Clean or replace the IAC valve....Hopefully this helps!!

Apr 17, 2010 | 2000 Honda Civic

1 Answer

Eclipse won't idle .


Throttle body, IAC or EGR valve.

Mar 12, 2017 | 2003 Mitsubishi Eclipse Coupe

1 Answer

Hesitation and Rough Idle


Hi, you stated that the original fuel pump is still installed. I would replace this pump as soon as possible. this may be the key issue. You can check the voltage on this part by using a voltage meter. you should get 14 volts here. if its less than 14, it will run weak , in return, preventing proper fuel flow. I would also check the injection system to see if its running properly as well.


please rate and god bless.

Mar 19, 2009 | 1998 Mercury Tracer

1 Answer

2000 gmc Jimmy misfiring


change fuel filter ,have inject. system cleaned

Mar 11, 2009 | 2000 GMC Jimmy

4 Answers

Service engine light on showing code p0089


Diagnostic trouble code P0089 - The ECM commands the Bosch high-pressure fuel pump to deliver a specific fuel rail pressure - that can vary up to 23,000 psi depending on load and speed. The actual pressure is monitored via the fuel rail pressure sensor. If the fuel rail pressure varies more than desired or if commanded fuel pump flow is 100mm3/second or less, DTC P0089 will set.

Corrective action includes measuring the fuel rail pressure using a Tech II scan tool, then compare that to commanded fuel rail pressure with the engine running at 2000 rpm. The difference must be less than 20 Mpa.

A blockage in the fuel tank or plugged fuel filter could cause this fault (excessive vacuum in fuel line). If there is less than 5 in Hg of vacuum when measured at the fuel pressure test port at 3000 rpm, the fuel pressure regulator could be defective, and may need to be replaced. The fuel pressure regulator (FPR) is a sub assembly located on the Bosch high-pressure fuel pump.

Jul 30, 2008 | 1996 Chevrolet Cavalier

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