Go Back   Computer Forums > Welcome To Computer Forums .org > Social Lounge | Off Topic
Click Here to Login
Join Computer forums Today


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-05-2009, 08:09 PM   #1
Golden Master
 
Rubber314Chicken's Avatar
 
Join Date: Mar 2006
Posts: 5,574
Send a message via AIM to Rubber314Chicken
Default Car help......

Okay, so my minivan is getting 12 miles to the gallon. Thats right, 12. I keep the Tach around 2200 accelerating. I get better mileage with out truck. Used to be getting 17. I looked at the plugs, and they are new. Basically no dirt on them (though the plug wires are another story). Tires are fully inflated (much moreso than when my sister had the car). Air filter is clean. Probably 5K on the filter. Oil is recently changed.

The only things I can think of (thanks to google) is the PCV valve, fuel fitler and O2 sensor, and possibly plugs (who knows, someone may have cleaned them)

Also, the engine sounds like there is a blower on it. At first it was only when I gave it a lot of gas, but now even when I'm accelerating normally I can hear a bit of a whine and what sounds like a fan going. This is coming from the passenger's side of the engine compartment...... where the accessory belt is... Could this have anything to do with it?

Oh yea, car is a 2002 Dodge Grand Caravan with the 3.3L V-6 and a 4 speed. Should I just search for a I-4 stick shift wrangler on craigslist or something? I like my van, because I can fit music gear and people in it, and the mileage SHOULD be fairly good, but I might as well have a big block V-8 in it.

Oh, and the brakes sometimes vary from normal feeling to very very very firm feeling. What's up with that?


Last tank I got 16. While not terribly awesome, I'm satisfied with it, considering the car is like 8 years old. Now I'm getting 12. Same driving, same gas from the same gas station.
__________________

__________________
AMD Athlon 64X2 4200+, 2 GB ram, 2 TB HDD, Ubuntu+SAMBA ♫ Lenovo T410, i5@ 2.4 GHz, 4 GB ram, 7
Rubber314Chicken is offline   Reply With Quote
Old 11-05-2009, 08:12 PM   #2
Fully Optimized
 
cboucher's Avatar
 
Join Date: Jun 2009
Location: USA
Posts: 1,652
Default Re: Car help......

Fuel injectors or Throttle body? Either way, try cleaning them.
__________________

__________________
But I'm trying, Ringo. I'm trying real hard... to be the Shepherd.
cboucher is offline   Reply With Quote
Old 11-05-2009, 08:20 PM   #3
Golden Master
 
superman22x's Avatar
 
Join Date: May 2006
Posts: 7,903
Send a message via MSN to superman22x Send a message via Yahoo to superman22x
Default Re: Car help......

Most likely a bad O2 sensor. Get some codes pulled at advance auto or something. If it's an O2 sensor, it will show up. Might be time for a reg tune up.
__________________
“Adults are just obsolete children and the hell with them.” - Dr. Suess
superman22x is offline   Reply With Quote
Old 11-05-2009, 08:58 PM   #4
Daemon Poster
 
AmericanSensei's Avatar
 
Join Date: Mar 2005
Posts: 1,144
Default Re: Car help......

My old truck had similar symptoms, However it also surged and idled extremely low. With the new technology and computer controlled vehicles I purchased an OBD Scanner so I can diagnose and fix my own vehicles. The Scanner and software ran me close to $500, However it's ALOT cheaper than the $150 most dealers charge to just "plug in". Most of the scanners you buy at Kragen, Autozone, etc only give you codes as opposed to telling you which component is failing, which is why I spent a little more on a higher end scanner.

Anyhow, It turned out it was my PCV (Positive Crankcase Valve), which only ran me 30 bucks in parts. All symptoms went away and I got much better MPG.
AmericanSensei is offline   Reply With Quote
Old 11-05-2009, 10:28 PM   #5
Golden Master
 
superman22x's Avatar
 
Join Date: May 2006
Posts: 7,903
Send a message via MSN to superman22x Send a message via Yahoo to superman22x
Default Re: Car help......

Quote:
Originally Posted by AmericanSensei View Post
My old truck had similar symptoms, However it also surged and idled extremely low. With the new technology and computer controlled vehicles I purchased an OBD Scanner so I can diagnose and fix my own vehicles. The Scanner and software ran me close to $500, However it's ALOT cheaper than the $150 most dealers charge to just "plug in". Most of the scanners you buy at Kragen, Autozone, etc only give you codes as opposed to telling you which component is failing, which is why I spent a little more on a higher end scanner.

Anyhow, It turned out it was my PCV (Positive Crankcase Valve), which only ran me 30 bucks in parts. All symptoms went away and I got much better MPG.
That is true, but if it's an O2 senser, the advance guys will get it. Otherwise, google the code they give you. Usually you can narrow it down to a common problem related to that code.
__________________
“Adults are just obsolete children and the hell with them.” - Dr. Suess
superman22x is offline   Reply With Quote
Old 11-05-2009, 10:47 PM   #6
Golden Master
 
Rubber314Chicken's Avatar
 
Join Date: Mar 2006
Posts: 5,574
Send a message via AIM to Rubber314Chicken
Default Re: Car help......

I'm gonna replace the PCV this weekend. I looked at the manual, and its due soon, and seeing as this was my sister's car, it was not taken care of at all, meaning the oil got changed 4 months too late, so I'm assuming that did some damage.
__________________
AMD Athlon 64X2 4200+, 2 GB ram, 2 TB HDD, Ubuntu+SAMBA ♫ Lenovo T410, i5@ 2.4 GHz, 4 GB ram, 7
Rubber314Chicken is offline   Reply With Quote
Old 11-06-2009, 12:06 PM   #7
Golden Master
 
superman22x's Avatar
 
Join Date: May 2006
Posts: 7,903
Send a message via MSN to superman22x Send a message via Yahoo to superman22x
Default Re: Car help......

Quote:
Originally Posted by Rubber314Chicken View Post
I'm gonna replace the PCV this weekend. I looked at the manual, and its due soon, and seeing as this was my sister's car, it was not taken care of at all, meaning the oil got changed 4 months too late, so I'm assuming that did some damage.
Don't DO anything until you get the codes pulled. It's free and takes 5 minutes. Do it now.
__________________
“Adults are just obsolete children and the hell with them.” - Dr. Suess
superman22x is offline   Reply With Quote
Old 11-06-2009, 01:50 PM   #8
Golden Master
 
Rubber314Chicken's Avatar
 
Join Date: Mar 2006
Posts: 5,574
Send a message via AIM to Rubber314Chicken
Default Re: Car help......

Quote:
Originally Posted by superman22x View Post
Don't DO anything until you get the codes pulled. It's free and takes 5 minutes. Do it now.
Yea, I'll get them to do that. They can at Auto Zone, right?
__________________
AMD Athlon 64X2 4200+, 2 GB ram, 2 TB HDD, Ubuntu+SAMBA ♫ Lenovo T410, i5@ 2.4 GHz, 4 GB ram, 7
Rubber314Chicken is offline   Reply With Quote
Old 11-06-2009, 02:21 PM   #9
Golden Master
 
superman22x's Avatar
 
Join Date: May 2006
Posts: 7,903
Send a message via MSN to superman22x Send a message via Yahoo to superman22x
Default Re: Car help......

Yep
__________________
“Adults are just obsolete children and the hell with them.” - Dr. Suess
superman22x is offline   Reply With Quote
Old 11-06-2009, 02:30 PM   #10
Daemon Poster
 
AmericanSensei's Avatar
 
Join Date: Mar 2005
Posts: 1,144
Default Re: Car help......

The difficult thing with that is it doesn't narrow it down much. I at one time relied on Autozone, Kragen for just codes..For example, The guy gave me Code P0171, PO174...<System too lean- Bank 1>.. While that did narrow it down, It still could of been a dozen things. A bad MAF (Mass Air Flow Sensor) could cause that symptom. A MAF will run you a few hundred dollars. A bad O2 Sensor could cause it...But which one...A bad PCV valve could cause it, etc, etc. It was this reason I went out and bought a good OBD scanner, Especially if you or your families computer controlled vehicles run into many Check engine light or vehicle problems out of warranty.

Good Luck to you though!
__________________

AmericanSensei is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 On
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 01:44 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.0