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Starts good but won't run at high rpm. Hard starting after engine is warm. will run good at low rpm

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Your Lawn Mower !!

Posted on Nov 20, 2014

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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

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Posted on Jan 02, 2017

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66 chrgr
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SOURCE: 2000 durango 5.2 cold starts, engine stalls or rpm surging

i know this may sound stupid but if your battery is old or a little weak on this vehicle the idle air control solenoid will act speradicley hunting for were it should be and the vehicle will stall.replace battery

Posted on Feb 01, 2009

  • 22 Answers

SOURCE: Runs Ok...engine warmed up...come to red light or

Sounds to me like the Throttle Position Sensor. Thats usually what makes the throttle "rev" But that is not going to make the oil pressure drop. Pull the codes from your car and look them up online. sometimes there is an extra fuse u can add to your panel and turn the key on and it will flash your codes via the check engine light. i.e. if the light flashes 2 times then small pause then 1 time and long pause that is code 21. if there isnt a extra fuse you can usually jump it with a paperclip and pull the codes. not really sure how to do that with yours. but im positive Google knows ;)

Posted on Oct 20, 2009

  • 1608 Answers

SOURCE: 2001 Buick Park Avenue starts hard when warm. Runs

Check the fuel pressure regulator on the fuel rail.It has a vacuum line going into it.Remove the line and if fuel comes out the regulator is bad.Replace it.This will cause a hard start when warm.The pressure sensor for the Evap.system is on top of the fuel tank.The po171 could be the fuel filter or o2 sensor.You need a scan tool to monitor the o2 readings to see if they are working properly.

Posted on Dec 01, 2009

  • 114 Answers

SOURCE: runs real rough up to 1500 rpm and dont hardly idle

Change your fuel filter for starters. I'm assuming you keep up with tune ups so plugs and wires wouldn't be the issue. If you haven't changed your PCV valve in a while I woud change it, or at least clean it. That plays with all sorts of systems. And finally, the most irritating one. the EGR valve. They can cause all sorts of problems so the symptoms can be all over the place. Aside from killing your performance, they also confound mechanics by behaving like other problems. Good luck.

Posted on Apr 17, 2010

perkins48
  • 14384 Answers

SOURCE: Radiator fan does not come

perkins48_1600.jpg Duralast/Relay - Radiator Cooling Fan Motor Price: $12.99
viewdetails.jpg Part Number: 19307 Alternate Part Number: 41-5132 Warranty:Limited Lifetime At AUTOZONE

Posted on Aug 29, 2011

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1 Answer

93 mustang 50v8 engine what causes engine to quit running at high rpm then restarts as rpm falls


So is this the only issue your having? Is the stang hard to start cold or warm? Hard to say with what youve asked....Is your TFI newer how about your Dizzy?

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check the MAP sensor (manifold absolute pressure). The ECM (car computer) uses that to keep idle at minimum 750 RPM. It's normal for it to run high when cold. These small 4 banger motors typically run hot, and they won't run right IF they're NOT running hot, ergo the idle is usually high when it is cold so as to cause it to warm up quicker. If the RPM's drop below 750, suspect the MAP sensor, &/or ECM.

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1 Answer

03 dodge ram 1500 crew cab 4.7l v8 starts fine when cold but won't start after it is warm


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Oct 17, 2012 | Cars & Trucks

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2002 jeep grand Cherokee change batt. Now it starts but won't run?


Because you disconnected the battery you lost the long trim value,you will now have to relearn the idle,start the vehicle idle it to 1500 RPM,hold for a minute,idle should stabilize,turn on A/C let it idle,for a minute,now your done,

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Chevy Malibu Cold Idle Problem


Check the water coolant thermostat. If it is stuck in the "open" position you are heating up all the water in the coolant system and this will take time. The thermostat keeps the water in the engine until warmed up to almost normal running temperature, only then does it allow the coolant to enter the radiator.

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2000 grand cherokee limited, when I start it up it idle's very high about 2300 rpm and then gradualy work its way down, but it never settle to a stedy idle, even if the car is warmed up. If you gi


your throttle body sensor may be bad. first get a can of spray carb or fuel injection cleaner and spray it in the opening for the intake for the throttle body. this will clear out the carbon build-up. when you crank it it will run shaky but shoiuld clear up within a minute

Jan 03, 2012 | 2002 Jeep Grand Cherokee

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