d_nim_ls@alien.topB to Mechanic Advice@gearhead.townEnglish · 1 year ago

Poor MPG after 100k service

d_nim_ls@alien.topB to Mechanic Advice@gearhead.townEnglish · 1 year ago

Looking to the Reddit gods for help here. I just did my 100k service on a 2011 Silverado 1500 (5.3 LT) - plugs, coolant flush, transmission fluid/filter, front suspension. Truck drives noticeably better all around, feels like butter accelerating and shifting. BUT. Prior MPG was 16 and now it’s down to 12. I did use NGK Platinum plugs and reused the wires. My only thought is to put ACDelco plugs and wires in but would that make sense?

Air filter is clean. Reputable shop did the trans fluid and alignment. Will clean the MAF shortly. Oil change 3k miles ago.

I’m on a 1500 mile road trip and it’s already not that fuel efficient lol, what would you do?

Chat

curkel207@alien.topB
link
fedilink
English
arrow-up
0·
1 year ago
Google relearn idle for your trucks PCM/ECC/ECM.
- d_nim_ls@alien.topOPB
  link
  fedilink
  English
  arrow-up
  1·
  1 year ago
  Will do! I’ll let you know how it works

Mechanic Advice@gearhead.town

mechanic_advice@gearhead.town

Create a post

You are not logged in. However you can subscribe from another Fediverse account, for example Lemmy or Mastodon. To do this, paste the following into the search field of your instance: !mechanic_advice@gearhead.town

Rules

This is a community for asking Mechanical questions pertaining to vehicles, engines, etc. If it’s got wheels, treads, floats, flies, or has an engine you’re good to go and we’ll do our best to help. Title, salvage, body work, paint work, etc questions also do not belong here. Memes, videos and other non-questions are not allowed.
No intentionally bad, harmful, or deceptive advice. If we feel a piece of advice is particularly reckless, dangerous, or extremely unhelpful it may be removed. Please report bad advice to the mods.
Keep discussion friendly, civil, courteous, and professional. We’re here to help so being rude won’t help. Don’t assume a shop is trying to “rip you off.” It’s okay to ask for a second opinion.
Only one vehicle/problem/incident per thread, and only post once. The only exception is for posting updates, provided it is properly marked as an [Update] or similar.
Body Work. Questions related to dings, dents, accidents, paint and so forth DO NOT belong here. Take the car to an auto body repair shop who can give you a qualified estimate.

IMPORTANT

Understand that the assistance you receive is ADVICE ONLY and is given with the understanding that the giver assumes no liability for any damages that occur as a direct or indirect result. It is impossible for a mechanic to diagnose your problem accurately without seeing/hearing the problem with his own senses. Any advice you receive you must use AT YOUR OWN RISK.

Visibility: Public

This community can be federated to other instances and be posted/commented in by their users.

1 user / day
1 user / week
1 user / month
1 user / 6 months
1 local subscriber
9 subscribers
999 Posts
1.45K Comments
Modlog

mods:
communick@gearhead.town