Question about 1998 Nissan Frontier

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When engine warms up it start to surge

When the engine warms to temp the engine surges.replaced the max air and choke ,didn't fix the problem

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Engine stalls cold or RPM fluctuates at idle up and down or dies near idle.

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 fault code as well as the cleaning procedure. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control. If the above cleaning doesn't cure your issues you need to have the computer controlled automatic idle speed control system diagnosed and repaired by a dealer or electronic engine control repair shop.

Posted on Nov 05, 2012

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Posted on Jan 02, 2017

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yotaguy
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SOURCE: idle surges and dies

The first thing to look for is vacuum leaks,possibly in the EGR valve or its related components,also look at the heat activated vacuum switches on the intake manifold,an easy way to check is to spray a small amount of wd-40 around the vacuum connections if theres a leak it will pull it in and can the motor rev up.I just worked on a Toyota that was doing the same thing and it was a loose EGR connection,Hopefully this helps.

Posted on Apr 10, 2009

SOURCE: engine surges and misfires, cannot

I HAVE TO START CAR TWICE BEFORE IT START,, FIRST TIME IT SURGES AND DIES

Posted on Jul 17, 2008

DAD5bbbbg
  • 111 Answers

SOURCE: engine run rough at idler and surges

I would change the fuel filter and see if that don't help. You might give it a good tune up and adjust the timing. ( If it has a carburetor then adjust the carb too.

Posted on Apr 08, 2009

  • 67 Answers

SOURCE: once engine is warm and running the engine starts to choke (either fuel or air) unable to gain speed

INJETOR,S LEAKING OR FUEL PRESSURE REGULATOR.

Posted on Apr 17, 2009

ourhowse
  • 2007 Answers

SOURCE: engine surges and misfires

Change fuel filter.

Posted on Jun 09, 2009

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www.jaguarforum.com/showthread.php?t=54266
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Car Surges then dies at a stop only in hot or warm weather


Think about what you just said. Only does this in times of higher temps out BUT never in winters cold. Doesn't that seem strange to you. Well I guess it does, huh. Anyway, know these systems helps. When engine is started, the temp sensor tells the computer it needs to place the engine to cold start mode. It does this and extra fuel is put into the cylinders to keep it running like a choke on the carbureted engines. But those you can turn the choke off or it does this automatically from the warmer engine. If in fact the temp sensor is not telling the computer it's warm enough to be taken out of cold start mode, it keeps dumping excessive fuel into the cylinders an flooding the engine causing it to surge and then die, because it's flooded. Therefore, the temperature sensor is faulty and needs replaced. Do that and drive on.

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I have a 1990 Mitsubishi eclipse with a 1.8, what is going on is it will not cold start you have to rev the engine to keep it from dieseling out this takes about 15 to 20 mins when it is warmed up it...


The long warm up suggests the thermostat has failed and is stuck open. The hard cold start is commonly caused by a faulty coolant temp sensor or the wiring connector on it. The idle surging can often be fixed by disassembling the throttle body and cleaning out the carbon build up. Be aware that the throttle body idle control box also has some internal gears that strip, also causing surge.

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1991 Toyota 4x4, 4 cyl. engine. Surges when coolant level is low, even though it has not yet heated up.


your carb has a coolant heated choke system if i am correct as car warms up the coolant warms the choke spring. keep full of coolant to keep from other damage

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Engine surges when cold - Once it warms up it runs fine


If carburated, I would suspect a sticking choke, making the fuel mix way too rich.

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