Finally Passed Smog!!!!!!! - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 06-05-2008, 09:43 PM   #1
Registered Member
 
92VXHatchguy's Avatar
 
Join Date: Apr 2008
Location: Southern California
Posts: 70
Country: United States
Talking Finally Passed Smog!!!!!!!

Im so relieved that this VX has passed smog. I was able to get my new plates finally, because the personalized ones that it came with needed to go!

Here's my readings:

15mph
RPM: 2357
CO2: 14.8
o2: 0.0

HC
Max:138
Average:31
Mine: 34

CO
Max: .84
Average: .10
Mine: .05

NO
Max: 859
Ave: 237
Mine: 131

Result: PASS

25mph

RPM:2208
CO2:14.8
o2: 0.0

HC
Max 112
Average:20
mine: 17

CO
Max: .73
Average: .09
Mine: .04

NO
Max 798
Average: 199
Mine: 140

Result: PASS

Now the only problem i'm having is that im still getting between 25-28 mpg.
Compression was check on all 4 cylinders and they were all good. EGR was good. I had a new cat installed below the stock cat, so I'm running with 2 cats right now. At first the NO was high, so it was recommended to put a new cat in. After it was installed, the car passed. What can I do to get better MPG?
__________________

__________________
Former VX Owner

DD is a 1993 Civic Si Hatchback
92VXHatchguy is offline   Reply With Quote
Old 06-05-2008, 10:15 PM   #2
Registered Member
 
GasSavers_JoeBob's Avatar
 
Join Date: Oct 2007
Posts: 698
Country: United States
Good for you! Now I gotta find the time to take care of the Cad...
__________________

__________________
"We are forces of chaos and anarchy. Everything they say we are we are, and we are very proud of ourselves!" -- Jefferson Airplane

Dick Naugle says: 1. Prepare food fresh. 2. Serve customers fast. 3. Keep place clean.



GasSavers_JoeBob is offline   Reply With Quote
Old 06-06-2008, 12:28 AM   #3
Registered Member
 
mkiVX's Avatar
 
Join Date: Dec 2007
Posts: 49
Country: United States
if its a five wire change your o2 sensor.
bump up those tire to 45 psi minimum
__________________
VX MASTER

SHWINN MOUNTAIN BIKE
GAS SAVER FAT BURNER

TOTAL MILES DISPLACED BY SHWIIN ON THE WAY TO WORK. 45 TOTAL MILES
mkiVX is offline   Reply With Quote
Old 06-06-2008, 05:10 AM   #4
Registered Member
 
Join Date: Mar 2008
Posts: 408
Country: United States
You already know this, but I just want to confirm that something is very wrong.

There are about 26 VXs in the garage here, with gaslogs. In aggregate, hundreds of fills have been reported. The number of times anyone has ever reported a fill under 30 mpg is very close to zero. There is one car that reported these two fills: 28.98, 26.57. Another car reported this fill: 29.22. I can't find any other VX fills under 30 mpg. So your situation is pretty unusual.

Typical overall mpg, taking into account all the VX gaslogs here, is about 45 mpg.

There are all sorts of pretty obvious things to check, but I have a feeling that it's probably a combination of factors. I'm also optimistic that the problems will be easy to fix.
monroe74 is offline   Reply With Quote
Old 06-06-2008, 08:06 AM   #5
Registered Member
 
Join Date: Mar 2008
Posts: 408
Country: United States
Some ideas about things to check.

Are the sure it's a VX engine and transmission? Is it CA or Federal? Have the proper ECU and O2 sensor?

Does the car start quickly and idle smoothly? Is the idle speed correct?

What size are the tires? Pressure? Original wheels?

Is the engine warming up properly? Thermostat working right? (Chances are the problem is elsewhere, because this would probably have created smog issues.)

Check the timing? Proper plugs? Rotor, wires?

Any signs of an exhaust restriction? You can check this by putting a rag over the exhaust. Be careful.

Are any brakes dragging? Lift the car and make sure the wheels spin freely. Does the car coast well? Are the tires wearing evenly? Any signs of bad alignment? Was the car ever wrecked?

If you engine has a lot of carbon deposits, some kind of top engine cleaner might help (e.g. Seafoam).

Check the accessory belts? A/C belt or alternator belt too tight, or a bad bearing in the accessory creating drag?

Check the valve clearance? I wonder if the valve timing is right. Could it be the belt slipped a notch?

Check for a vacuum leak? Check for proper fuel pressure? Fuel filter not clogged?

I'm sure I forgot some things.
monroe74 is offline   Reply With Quote
Old 06-06-2008, 01:59 PM   #6
Registered Member
 
kamesama980's Avatar
 
Join Date: Nov 2007
Posts: 742
Country: United States
Location: Columbus, IN, USA
Send a message via AIM to kamesama980 Send a message via Yahoo to kamesama980
you DO have multiple cat converters now. maybe the 1st one was buggered and you ought to have replaced it instead of adding to it. would go along with fixing your trouble simply by adding a cat.
__________________

__________________
-Russell
1991 Toyota Pickup 22R-E 2.4 I4/5 speed
1990 Toyota Cressida 7M-GE 3.0 I6/5-speed manual
mechanic, carpenter, stagehand, rigger, and know-it-all smartass
"You don't get to judge me for how I fix what you break"
kamesama980 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
UK MPG Added pb Fuelly Web Support and Community News 5 01-28-2014 09:07 PM
Query with fill ups Dukey Fuelly Web Support and Community News 3 04-09-2010 02:27 AM
HTML Format for smaller screens ... cfg83 Fuelly Web Support and Community News 9 11-09-2007 02:29 AM
Smart Sighting zpiloto General Fuel Topics 21 11-07-2007 08:22 PM
Engine Temp vs MPG JanGeo General Fuel Topics 7 05-12-2006 10:16 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 05:20 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.