2018 2.4 Engine "Ping" - Jeep Renegade Forum
 
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post #1 of 9 (permalink) Old 08-29-2019, 01:20 PM Thread Starter
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2018 2.4 Engine "Ping"

Really enjoying the car, BUT.... really early on, like 2000 miles, I started hearing the engine ping. It does it especially on warmer days, accelerating up a hill (in Seattle so lots of those) or mid-block when pausing and then re-accelerating, typically between 1500-2000rpm, and after the transmission chooses a lower gear. I'm using specified 87 fuel, top-tier. I've taken it in once for my first 5K oil-change, and they said they messed with the timing or remapped something, but it's still happening. I'm going to make another appointment to address this, but bummed that a new car is pinging. I wanted this to be my forever car, so I don't want to believe it. And yet, here I am. It's not carbon build up on brand new car, so obviously the timing isn't correct or the spark plugs aren't doing something properly...

Will update as I address.....

Is anyone else experiencing this?
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post #2 of 9 (permalink) Old 08-30-2019, 10:36 AM
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As a self test; run a tank of premium gasoline through it and see if the ping goes away.

If it doesn't go away, it may be something other than "ping".

If it does go away, you might need an updated flash for your PCM (dealer) to remove some of the timing.

Top tier gas??? Chevron, Shell, & 76 for example sell a better quality gas.

I don't want to mention any names, but there are some station that advertise "Top Tier" gasoline that is straight up garbage.
just sayin'.

Very Respectfully

Ed

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post #3 of 9 (permalink) Old 08-30-2019, 11:11 AM Thread Starter
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Thanks, Ed.

Arco is my go-to brand. I can try another brand, and I expect that a higher octane gas WILL make the ping go away. But I understand that the higher octane inhibits early ignition, and so in this case, masks the timing problem. I think it's obvious it needs an updated flash, and supposedly that's what they did at my first service, but the ping is still there. I'm concerned since it's been doing it since new, and I know that early ignition is not a good thing for the life of the engine.

I'll do your suggested experiment, but here's the thing: I've had cars that ping, and cars that don't ping, and generally I've run them all on Arco gas. So there's that. The ones that have pinged, the issue was never sufficiently addressed by the dealer, and that's my concern. I dumped those cars, cause frankly, it bothers me a lot.
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post #4 of 9 (permalink) Old 08-30-2019, 11:20 AM
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I am not a fan of Arco. I have had problems with them in the past.
Just going to one of the other station that I mentioned earlier might even solve your problem (I would bet you money that you will see a three to four mpg improvement just going to one of the other stations).

Thank you.

Very Respectfully

Ed

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post #5 of 9 (permalink) Old 08-30-2019, 12:40 PM
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An engine pinging is really a thing of the past with modern computer controls on modern cars. Certainly pinging on the Renegades is a very very rare complaint that I've seen. It's general rule that if a car is rated for 87 octane, then any higher is just throwing money away. I would try switching gas stations and maybe brands to see if things change. Certainly Top Tier gas is the best to use, and recommended my auto manufacturers. https://toptiergas.com/licensed-brands/


If you're still having issues, and it's actually pinging that you're hearing then there may be a problem. On a side note, an occasional quick ping on a hot day while accelerating is not something to worry about as the knock sensor has to actually hear a ping to make the quick adjustment. I hope this helps.


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post #6 of 9 (permalink) Old 08-30-2019, 01:53 PM
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Quote:
Originally Posted by Fedge View Post
Thanks, Ed.

Arco is my go-to brand. I can try another brand, and I expect that a higher octane gas WILL make the ping go away. But I understand that the higher octane inhibits early ignition, and so in this case, masks the timing problem. I think it's obvious it needs an updated flash, and supposedly that's what they did at my first service, but the ping is still there. I'm concerned since it's been doing it since new, and I know that early ignition is not a good thing for the life of the engine.

I'll do your suggested experiment, but here's the thing: I've had cars that ping, and cars that don't ping, and generally I've run them all on Arco gas. So there's that. The ones that have pinged, the issue was never sufficiently addressed by the dealer, and that's my concern. I dumped those cars, cause frankly, it bothers me a lot.
This isn't a quiet engine, transmission, or AWD system. Especially without an example, the first step in diagnosis is to rule in/out actual engine knock. If it isn't severe, a tank of high octane should make it stop. If it doesn't, then it probably isn't knock but something else.

In hot weather I can get a low RPM noise that is kind of ratchety when getting off an back on the gas in short order at slow speeds when trying to maintain a proper speed (i.e. 25 mph residential zone with hills).

My first through was it's too high pitched and fast for knock, but I fed it a tank of 93 anyway. No difference. Based on issues with other vehicles that sounded kind of similar, I checked heat shielding. The renegade doesn't have all that much rigid heat shielding and I couldn't find a potential culprit. It honestly sounds like a valvetrain that needs adjusting, but only for a moment, and it seems to come form the bottom half of the engine bay on the passenger side.

At this point I assume it has something to do with the transmission or AWD system. It seems to be harmless.

Long story short, noises are easier to diagnose if you post something with audio of the noise.


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post #7 of 9 (permalink) Old 08-31-2019, 01:53 PM
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Originally Posted by Fedge View Post
Really enjoying the car, BUT.... really early on, like 2000 miles, I started hearing the engine ping. It does it especially on warmer days, accelerating up a hill (in Seattle so lots of those) or mid-block when pausing and then re-accelerating, typically between 1500-2000rpm, and after the transmission chooses a lower gear. I'm using specified 87 fuel, top-tier. I've taken it in once for my first 5K oil-change, and they said they messed with the timing or remapped something, but it's still happening. I'm going to make another appointment to address this, but bummed that a new car is pinging. I wanted this to be my forever car, so I don't want to believe it. And yet, here I am. It's not carbon build up on brand new car, so obviously the timing isn't correct or the spark plugs aren't doing something properly...

Will update as I address.....

Is anyone else experiencing this?
Hi Fedge,

We are sorry to hear that you have this ongoing concern that you have been to the dealer for once before. If you would like additional support while in service, please send our team a private message with your VIN, mileage, and dealer.

Darlene
Jeep Social Care Specialist
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post #8 of 9 (permalink) Old 09-04-2019, 12:22 PM
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Mine pings on hot days and initial application of throttle until the knock-sensor takes out a little timing. It's not continuous and I can only hear it with the windows open and low vehicles speeds.

I ran a tank of premium through it and it was gone, but I have the forever warranty so I'm just going to put 87 in it and not worry. Over 60,000 miles so far.


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post #9 of 9 (permalink) Old 09-05-2019, 08:54 AM
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Just a quick note on "ping" issue. I had similar situation with another like 4 cyc. engine and 3 dealers later the "ping" was a piston problem that required engine replacement under warranty. IF gas is Not the issue and condition continues, try another dealer!
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