...fluctuating, even at idle, when I would expect them to be fairly stable. Attached is my .msq and a log of the car coming up to temp at idle. I also installed recently an AFR gauge, which closely mirrors the AFRs I'm seeing in Tunerstudio.Jeep - Cherokee :: Low / Fluctuating Oil Pressure Gauge And Spiking Temps At Idle May 27, 2012. I have a 1998 Jeep Cherokee L6 4.0 Liter automatic with 223,000 miles. The oil pressure usually runs around 1/8-1/4 when driving around town and now I am getting temperature spikes.

Jul 11, 2012 · Page 1 of 2 - Resting Voltage Of Battery 12.5 - Too Low? - posted in Problems, Questions and Technical: After leaving my car a 1 or two days without a run, the car always starts but it is quite labored. Though after a run the car fires right up. The resting voltage of the battery is around 12.5v - is it time for a new battery?

Mar 16, 2017 · For that, first, start by unplugging the IAC, run the car on idle and adjust the set screw until you’re happy with the idle (factory is around 750-800RPM), turn off the engine, unplug the positive terminal on your battery for 10 minutes. Plug the IAC and battery back and start it up again and let run for a few minutes.

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Once you get to the fuel pump access plate area underneath the back seat, disconnect the plug, and the fuel gauge should drop to Empty. It the needle sticks then you have a gauge problem. Next take the disconnected plug and run a small jumper wire between the Green/Blue wire and any metal point on chassis ground.

Idle speed is 800 rpm in park/neutral, 600 rpm in gear. Also should mention the battery is in the trunk. What I have done:-New 60 amp alternator-Junkyard 90 amp 1990 dodge truck alternator (and 6 gauge jumper wire from alternator output to battery)-new voltage regulator-checked/cleaned grounds on voltage regulator and from battery to frame/body Doing live graphs, i pick all 4 o2 to see what are they doing. The graph comes up interesting to me. 2 of the 4 sensors are rocky steady at idle and the other 2 are fluctuating wildly up and down. Is this normal ?Oct 21, 2009 · The flickering is a result of voltage surges. This can be due to many possible factors, including a bad voltage regulator, an alternator that's not in good condition (possible bad diode, bad rotor/stator, poor internal connections), poor/high resistant charging system connections, poor/high resistant grounds, and also the idle surging is enough to cycle the alternator in/out of the charging ...

Rev engine (2,000-3,000 rpm) two o three times under no-load (A/C OFF, headlights OFF, radio OFF), then run the engine at idle speed. 3 Adjust the idle speed by turning the idle speed adjusting screw. 4 Engine Cyl Idle speed = 750 ± 50 rpm (in P or N position) So it turned out the fluctuating idle was due to low coolant levels. There was a coolant leak that I did not notice. I topped it up after doing an oil change and the fluctuating idle has stopped. Had no idea coolant levels could have such an effect. Last car which had a coolant leak just overheated.

But with the brakes, the battery gauge drops and stays there until i let off. I have the headlights that flip up. The car will actually bog down when I turn them off, but 2-3 seconds later it picks back up. None of this happens when I'm driving or idling at 1000 RPm or above.Poor idle / noisy induction Symptoms. Rough/fluctuating idle and air whooshing sounds or a more rumbly deep engine tone. Solution. Check that air intake pipes haven't become loose and moved to partially block off the throttle body. This is far more likely to occur if you are running a custom air intake system as the factory one is well secured. Apr 24, 2020 · Insert a T-30 size Torx driver into the Idle adjustment screw that is located behind the plug removed earlier. Turn the screw to adjust the idle speed to 650 RPM +/- 50 RPM. Turn off the engine and disconnect the negative battery terminal from the battery using a wrench. Reconnect the IAC valve. May 13, 2020 · With the radiator cap off, start the car. Coolant should begin to cycle through the engine and if there’s air trapped in the system, it will burp up the air. Let the car idle until warm, which may...

Cool thats actually my reading at idle and in gear on deceleration it probably reads another -2 to 3 in+hg, I'll have to check that next time. At idle- 19-21 is normal. Use a real boost gauge not cobb. Anything less indicates a leak.Subject: Re: idle surging/fluctuation, 9/13/00. From: "F.R. Wilk" [email protected] << The idle starts out fine, and only seems to go nuts once the engine warms up or has been running for a while. It fluctuates from around 900 up to 1600 to 1900, but never seems to go above 2000 rpm. Clark says the gauge is "dead nuts accurate" — if you consider all the variables at work during driving, including temperature, driving conditions and driving style. The biggest fluctuation ... The voltage gauge fluctuates between 12 and 14 or so. It's usually fine when I first start it, but gets worse after the truck gets warm. Also stereo starts crapping out. I think either alternator, or voltage regulator. Mar 20, 2015 · If you have a boost gauge on your turbocharged car you’ve probably watched that little needle swing all over the place and wondered what it is telling you. If you have a turbocharger car without a boost gauge you’re missing out on all the entertainment. Boost is the term that people use to describe the air pressure in the inlet manifold.

Oct 23, 2016 · Ok so my temp gauge is fluctuating sometimes alot more then some it goes all the way up to overheat then goes back down to normal i just replaced thermo stat burped the radiator then a little bit ago it started fluctuating alot more and now when i get done driving it theres alot of antifreeze in the overflow tank and i can see that it comes out of the top of it to. idle rpm fluctuation with or without dtcs - p0505, p0506 and/or p061b: 2011-10-19: ... battery service - operation of battery eye - charging service tips: 2007-03-19: