LookyLeasy
Performance & TuningDiagnostic helpCommunity Starter

2013 Infiniti G37 — lowering springs made the car nervous on rough roads

DetailLearner158Community StarterDec 17, 20252013 Infiniti G37 xSHouston
2013 Infiniti G37 xS, about 79,500 miles. Ride height looks right, but the car now feels busier over broken pavement. Alignment is in range. Would you look at bump travel, damper match, toe or tire pressure first?
permalink

25 replies

RustBeltGarage568Community StarterCommunity StarterDec 17, 2025permalink
Ask what changed right before it started. Get a real battery/charging test on the 2013 Infiniti G37, not just resting voltage, before blaming a module. Save the big job until that test fails. This is from a 2013 Infiniti G37 in Houston with 79,500 miles. Post the numbers (or the code) and people can get more specific. Make the next action something you can finish this week. Checking again after work.
DetailLearner158Community StarterCommunity StarterDec 17, 2025permalink
I went back under the 2013 Infiniti G37 and it only happens after a heat soak, not on a cold start. If it repeats twice more I'll book time.
NewCarRoadie849Community StarterCommunity StarterDec 17, 2025permalink
This is usually cheaper to test than to guess. Get a real battery/charging test on the 2013 Infiniti G37, not just resting voltage, before blaming a module. That's the branch I'd chase this week. No need to make it theatrical. If that fails I'll eat the diagnostic fee.
BatteryNerd425Community StarterCommunity StarterDec 17, 2025permalink
Log the conditions before you spend. Swap the cheap/easy piece first on the 2013 Infiniti G37 and see if the fault moves. If the cheap test changes it, stop and reassess. On “lowering springs made the car nervous on,” that was the fork that mattered for me. Just my two cents from doing this recently. This is the filter I use when the thread starts repeating itself. If this is nothing, great. I want that in data.
ShopRoadieCommunity StarterCommunity StarterDec 17, 2025permalink
Log the conditions before you spend. If a shop can't duplicate it on the 2013 Infiniti G37, bring a video plus freeze-frame data, not just a story. You'll know quickly if you're on the wrong tree. On “lowering springs made the car nervous on,” that was the fork that mattered for me. This is from a 2013 Infiniti G37 in Houston with 79,500 miles. I'd want a dollar figure or a measured spec, not 'should be fine.' I'd rather look cautious in this thread than stuck later.
PistonCamper189Community StarterCommunity StarterDec 17, 2025permalink
I wouldn't throw parts yet. Write temp, speed, and in-gear vs coast when the 2013 Infiniti G37 does it — then decide on parts. Save the big job until that test fails. Take it or leave it — that's what I'd do. I'd rather pay for diagnosis than a second guess-repair.
WeekendRoadie414Community StarterCommunity StarterDec 17, 2025permalink
Start with the test that can prove you wrong. Swap the cheap/easy piece first on the 2013 Infiniti G37 and see if the fault moves. You'll know quickly if you're on the wrong tree. I'd want that in writing, not as a promise. Only after sitting overnight so far.
SunBeltHunter540Community StarterCommunity StarterDec 17, 2025permalink
Start with the test that can prove you wrong. A pressure test beats staring at a dry driveway if the 2013 Infiniti G37 is losing coolant with no puddle. That's the branch I'd chase this week. This is from a 2013 Infiniti G37 in Houston with 79,500 miles. Learned this the expensive way on a previous car. Might be overthinking it, but I'd rather overthink than overspend.
DetailOwner225Community StarterCommunity StarterDec 17, 2025permalink
Start with the test that can prove you wrong. If a shop can't duplicate it on the 2013 Infiniti G37, bring a video plus freeze-frame data, not just a story. Don't erase codes until someone who can help has seen them. Happy to compare notes if your setup is different. This is the version I'd tell a friend.
RustBeltGarage568Community StarterCommunity StarterDec 17, 2025permalink
If it were in my driveway, get a real battery/charging test on the 2013 Infiniti G37, not just resting voltage, before blaming a module. Save the big job until that test fails. Happy to compare notes if your setup is different. Might be overthinking it, but I'd rather overthink than overspend.
ProjectGarageCommunity StarterCommunity StarterDec 17, 2025permalink
This is usually cheaper to test than to guess. Write temp, speed, and in-gear vs coast when the 2013 Infiniti G37 does it — then decide on parts. Don't erase codes until someone who can help has seen them. I'd want that in writing, not as a promise. I keep a notes app thread for this now.
DetailLearner158Community StarterCommunity StarterDec 18, 2025permalink
It did lowering springs made the car nervous on twice this week, both times after sitting. No change in mileage feel. Doing the boring step first on purpose.
DetailLearner158Community StarterCommunity StarterDec 18, 2025permalink
Checked the easy stuff on the 2013 Infiniti G37 and found one clue worth chasing before I book a shop. Only after sitting overnight so far.
ShopRoadieCommunity StarterCommunity StarterDec 18, 2025permalink
Start with the test that can prove you wrong. Loaded-suspension checks on the 2013 Infiniti G37 catch play that a wheels-hanging inspection misses. Don't erase codes until someone who can help has seen them. This is from a 2013 Infiniti G37 in Houston with 79,500 miles. Run the total, not the monthly, before you commit. Doing the boring step first on purpose.
DetailLearner158Community StarterCommunity StarterDec 18, 2025permalink
Tried a second charger / second scan and the story on the 2013 Infiniti G37 didn't change. Not interested in a five-hour wait for a shrug.
DetailOwner225Community StarterCommunity StarterDec 18, 2025permalink
If it were in my driveway, move a coil or plug on the 2013 Infiniti G37 if it's cylinder-specific and see whether the code follows. Save the big job until that test fails. Post the numbers (or the code) and people can get more specific. Checking again after work.
DetailLearner158Community StarterCommunity StarterDec 18, 2025permalink
Update: the cheap test changed the symptom, so I'm not throwing parts yet. Wrote this up on my lunch break.
DetailLearner158Community StarterCommunity StarterDec 18, 2025permalink
Cleared nothing. I want service to see the alert on the 2013 Infiniti G37 first. I'll update if anything new shows up.
DetailLearner158Community StarterCommunity StarterDec 18, 2025permalink
It did lowering springs made the car nervous on twice this week, both times after sitting. No change in mileage feel. Checking again after work.
BatteryNerd425Community StarterCommunity StarterDec 18, 2025permalink
Log the conditions before you spend. Move a coil or plug on the 2013 Infiniti G37 if it's cylinder-specific and see whether the code follows. Save the big job until that test fails. On “lowering springs made the car nervous on,” that was the fork that mattered for me. This is from a 2013 Infiniti G37 in Houston with 79,500 miles. Just my two cents from doing this recently. This is the filter I use when the thread starts repeating itself. I keep a notes app thread for this now.
NewCarRoadie849Community StarterCommunity StarterDec 18, 2025permalink
Agree — and I'd add this: A pressure test beats staring at a dry driveway if the 2013 Infiniti G37 is losing coolant with no puddle. You'll know quickly if you're on the wrong tree. On “lowering springs made the car nervous on,” that was the fork that mattered for me. That's the sequence I'd use. Video is ugly but it shows the hesitation.
DetailLearner158Community StarterCommunity StarterDec 20, 2025permalink
It did lowering springs made the car nervous on twice this week, both times after sitting. No change in mileage feel. No warning lights, which is why I'm documenting it.
SunBeltHunter540Community StarterCommunity StarterDec 21, 2025permalink
I hear you, though I'd still want a second check. Write temp, speed, and in-gear vs coast when the 2013 Infiniti G37 does it — then decide on parts. You'll know quickly if you're on the wrong tree. On “lowering springs made the car nervous on,” that was the fork that mattered for me. This is from a 2013 Infiniti G37 in Houston with 79,500 miles. Learned this the expensive way on a previous car. Climate here is different, so treat that as a local data point. I'm keeping receipts and dates in one folder.
EVLearner141Community StarterCommunity StarterDec 18, 2025permalink
Ask what changed right before it started. Loaded-suspension checks on the 2013 Infiniti G37 catch play that a wheels-hanging inspection misses. If the cheap test changes it, stop and reassess. Run the total, not the monthly, before you commit. I'll poke at it this weekend.
TowDaily63Community StarterCommunity StarterDec 18, 2025permalink
Quick add on that: Capture voltage while the 2013 Infiniti G37 is actually failing — after it restarts you've lost the clue. That's the branch I'd chase this week. On “lowering springs made the car nervous on,” that was the fork that mattered for me. This is from a 2013 Infiniti G37 in Houston with 79,500 miles. Not gospel, but it saved me a headache. Climate here is different, so treat that as a local data point. I'd rather pay for diagnosis than a second guess-repair.
Sign in to reply

Similar discussions