Go Back   EcoModder Forum > Classifieds > For Sale
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-22-2011, 01:14 AM   #1 (permalink)
sol
EcoModding Lurker
 
Join Date: Oct 2011
Location: northern illinois
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Unhappy bad mpg cavalier 2.2L

Hello everyone I have a 1991 cavalier 4 cylinder 2.2L but its been getting real bad mpg about 17 to 19 on average I've changed the spark plugs, air filter, tire pressure is good and I've added fuel injector cleaner. I even drive like an old lady and that didn't help bring up my mpg. I cant think of anything else that could be causing bad mpg Amy ideas?

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-22-2011, 01:23 AM   #2 (permalink)
Master EcoModder
 
Join Date: Feb 2011
Location: houston
Posts: 374

Black Knight - '94 Toyota Corolla
Team Toyota
90 day: 58.53 mpg (US)
Thanks: 3
Thanked 38 Times in 33 Posts
how many miles and have you done a compression test?
  Reply With Quote
Old 10-22-2011, 06:27 AM   #3 (permalink)
Eco-ventor
 
jakobnev's Avatar
 
Join Date: Oct 2010
Location: sweden
Posts: 1,630

Princess - '92 Mazda MX-3 GS
House of Tudor
Team Mazda
90 day: 53.54 mpg (US)

Shirubāarō (*´ω`*) - '05 Toyota Prius Executive
Team Toyota
90 day: 54.88 mpg (US)

Blue Thunder - '20 Hyundai IONIQ Trend PHEV
Team Hyundai
Plug-in Hybrids
90 day: 587.16 mpg (US)
Thanks: 74
Thanked 701 Times in 444 Posts
Send a message via MSN to jakobnev
Does it show any symptoms of actually running badly?



And driving like an old lady doesn't get the best mileage, far from it. You have to get up to speed swiftly, but make sure you get off the gas in time for when you need to slow down.
__________________




2016: 128.75L for 1875.00km => 6.87L/100km (34.3MPG US)
2017: 209.14L for 4244.00km => 4.93L/100km (47.7MPG US)
  Reply With Quote
Old 10-22-2011, 06:48 PM   #4 (permalink)
sol
EcoModding Lurker
 
Join Date: Oct 2011
Location: northern illinois
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
It's got 93k miles and no I haven't tested the compression I will next week. The only thing is that I have to crank it for like 5 sec for it to start.
  Reply With Quote
Old 11-27-2011, 02:07 AM   #5 (permalink)
sol
EcoModding Lurker
 
Join Date: Oct 2011
Location: northern illinois
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Well I changed the o2 sensor and the coolant temp sensor i hope it helps
  Reply With Quote
Old 11-27-2011, 02:29 AM   #6 (permalink)
Master EcoModder
 
Join Date: Feb 2011
Location: houston
Posts: 374

Black Knight - '94 Toyota Corolla
Team Toyota
90 day: 58.53 mpg (US)
Thanks: 3
Thanked 38 Times in 33 Posts
compression test time then
  Reply With Quote
Old 11-27-2011, 11:10 PM   #7 (permalink)
EcoModding Lurker
 
Join Date: Oct 2011
Location: dekalb,il
Posts: 7
Thanks: 1
Thanked 0 Times in 0 Posts
i have the same car and my problem with it is that my temp gauge never reaches the middle its ita just reaches 1/4 of it.
  Reply With Quote
Old 11-28-2011, 10:47 AM   #8 (permalink)
Master EcoModder
 
Join Date: Jan 2011
Location: na
Posts: 1,025
Thanks: 277
Thanked 218 Times in 185 Posts
How quick does it heat up, a new 195-205F t'stat might help. With a auto really slow acceleration might actualy hurt MPG in my experience, try accelrating quicker to get it into drive faster.

How's the brakes, old rubber hoses at each wheel can restrict the fluid from returning causing the brakes to not release completely. I recently had to replace one on my 03 mailbu so your 20+ year old hoses & brakes could be holding you back.
  Reply With Quote
Old 11-29-2011, 10:36 PM   #9 (permalink)
sol
EcoModding Lurker
 
Join Date: Oct 2011
Location: northern illinois
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
I replaced front brakes and guide pins the hoses are cracked but don't leak

Compression results

Cylinder: 1 2 3 4
Dry: 160 159 160 160
Wet: 185 185 190 190
  Reply With Quote
Old 11-30-2011, 01:09 AM   #10 (permalink)
Master EcoModder
 
Join Date: Jul 2008
Location: Russellville, KY
Posts: 540
Thanks: 8
Thanked 33 Times in 27 Posts
Compression looks like you have a healthy engine. My idea was a new 02 sensor, but I see you've already replaced it. Besides checking the brakes to see if they are dragging you might check to make sure all the wheel bearings are in good condition and rolling freely and have the alignment checked. Did you change the plug wires when you changed the plugs? Could be a bad wire. Might also check to make sure all the fuel injectors are working. What type of driving are you doing? Highway? City? Combined? CEL on? Also check for vacuum leaks. What's the condition of your battery? I've seen my FE drop when my battery was getting weak, probably because the alternator was working overtime trying to charge a battery that was about worn out.

__________________




Last edited by Ford Man; 11-30-2011 at 01:16 AM..
  Reply With Quote
Reply  Post New Thread


Tags
bad mpg, cavalier

Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com