Go Back   Corvette Forum > C4 Corvettes, 1984 - 1996 > C4 ZR-1 Discussion
Sign in using an external account
Register Forgot Password?
Register Search Today's Posts Mark Forums Read FAQ Vendor Directory
Search
C4 ZR-1 Discussion General ZR-1 Corvette Discussion, LT5 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Track

Reply
 
 
 
 
Thread Tools Search this Thread
Old 05-15-2004, 05:23 PM   #1
Last Ride
CF Senior Member
 
Last Ride's Avatar
 
Member Since: Nov 2001
Send a message via AIM to Last Ride
Default Fuel gauge not working

Hey all--
Well, I got a rude awakening today. Cruising around town with about a quarter of a tank of fuel left when all of a sudden, the car sputters, backfires, and dies. I couldn't move it anywhere! I got it to the side of the road, still reading a 1/4 tank. All of a sudden, the digital guage goes to one bar! I got my wife to bring me some gas, and it started right up. I made it to the gas station for a fill up. Is this a common problem? How can I correct the guage? It looks like the list of stuff I have to do to "the car I could just drive" is growing! Thanks for the help!
Last Ride is offline   Reply With Quote
Old 05-15-2004, 08:59 PM   #2
Jeffvette
CF Senior Member
 
Jeffvette's Avatar
 
Member Since: May 2000
Location: No more yankee my wankee, the Donger is tired!
Default Re: Fuel gauge not working (Last Ride)

Sounds like the float arm has a cach in it.
Jeffvette is offline   Reply With Quote
Old 05-15-2004, 09:32 PM   #3
Bans25
CF Senior Member
 
Bans25's Avatar
 
Member Since: Aug 2000
Location: Dover NH
Default Re: Fuel gauge not working (Last Ride)

that must be something new with that Z..., when I test drove that car, it was on empty and the owner had me stop to fuel up. While I was talking to him he mentioned it was a brand new sending unit and pumps that he paid big $$ for (then I broke the news to him about the Suburban fuel pumps, and his jaw dropped)

Bans25 is offline   Reply With Quote
Old 05-16-2004, 07:53 PM   #4
Last Ride
CF Senior Member
 
Last Ride's Avatar
 
Member Since: Nov 2001
Send a message via AIM to Last Ride
Default Chip?

I just had a thought on this. Would a DRM chip cause an sort of "mis-reading"? This chip I have is pretty radical (for the 368). I was going to swap it out for the stock chip for around-town cruising, but I haven't got to it yet. Any thoughts?

Bryan
Last Ride is offline   Reply With Quote
Old 05-16-2004, 08:08 PM   #5
DDSLT5
CF Senior Member
 
DDSLT5's Avatar
 
Member Since: Jul 2002
Location: This city NEVER sleeps! Frank's back yard!
Default Re: Chip? (Last Ride)

The chip won't affect the fuel guage. I wouldn't recommend putting the stock chip in - it was calibrated for 350 cids - at wot, you'll likely lean out the engine since you now have 368 cids, and more porting.
DDSLT5 is offline   Reply With Quote
Old 06-02-2004, 06:36 PM   #6
fhturner
CF Senior Member
 
fhturner's Avatar
 
Member Since: Jun 2004
Location: Birmingham AL
Send a message via AIM to fhturner
Default Re: Fuel gauge not working (Last Ride)

Hey Last Ride--

Did you ever get this problem sorted out? I believe I'm having a similar problem on my recently purchased '90 ZR-1. I don't know if it was happening before I got it, because it had a full tank of gas (for storage) when I test drove it and bought it. But, the first tankfull (driving back to B'ham from Dallas) decreased normally on the gauge as I drove. After my first fill up, though, I noticed that after driving 100 miles, the gauge had dropped maybe one bar. It does seem to drop, but I think that, like you, when my gauge shows 1/4 - 1/2 tank, I'm out of gas. BTW, you didn't say: How much gas did it take when you filled it back up?

L8r,
Fred
fhturner is offline   Reply With Quote
Old 06-02-2004, 08:09 PM   #7
White 68
CF Senior Member
 
White 68's Avatar
 
Member Since: Dec 2001
Location: Dallas Texas
Default Re: Fuel gauge not working (Last Ride)

On my 91 the gas reading has always been alittle wierd...I keep track of how much gas I put in and how many miles I drive just to make sure. My problem is when the car get to about a 1/4 tank it says I,m on reserve and shows about 40 miles til empty ..Put as the reading gets down to say 20 or less miles it resets back up to 40 miles til empty and will continue this routine until it hits Low fuel ....
Anyone else have this happen ?
White 68 is offline   Reply With Quote
Old 06-02-2004, 10:50 PM   #8
Last Ride
CF Senior Member
 
Last Ride's Avatar
 
Member Since: Nov 2001
Send a message via AIM to Last Ride
Default Re: Fuel gauge not working (fhturner)

Haven't got it sorted out yet, but the car went to the shop today. Hopefully, we will get it sorted out and I will have something to report. It took at or around 19 gallons when I finally filled it up.

Bryan
Last Ride is offline   Reply With Quote
Old 06-03-2004, 10:46 AM   #9
FU
NCM Lifetime # 982
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Support Corvetteforum!
 
FU's Avatar
 
Member Since: Feb 2001
Location: HOME OF THE FREE. BECAUSE OF OUR BRAVE. Babylon NY The Surcharge State

Default Re: Fuel gauge not working (Last Ride)

Ran into this problem on my 90. Pull the Fuel sending unit and use a ohm meter to see if it is sending the correct values to the CCM. IE: vary from the full position and gradually lower the float. The ohm's should go lower. Do this procedure slow. If the ohm meter get's stuck at any output contact me (IM) and I'll tell you how to fix it. It is so easy you would be supprised.

HTH
FU is offline   Reply With Quote
Old 06-03-2004, 04:13 PM   #10
fhturner
CF Senior Member
 
fhturner's Avatar
 
Member Since: Jun 2004
Location: Birmingham AL
Send a message via AIM to fhturner
Default Re: Fuel gauge not working (FrankUrbinati)

Sorry to be dense, but I don't (yet) have my service manuals for the Z. Where do I pull the fuel sending unit, and how to I manually lower the float? This sounds involved-- does it require taking a lot of things apart?

Thanks for the help and info, Frank!
Fred
fhturner is offline   Reply With Quote
Old 06-03-2004, 05:10 PM   #11
JaySS
Junior Member
 
Member Since: Mar 2002
Location: Fitchburg MA
Default Re: Fuel gauge not working (fhturner)

I have pretty much convinced myself that the fuel gauge will not decrement properly if the mileage calculator is left in the "Range" mode. Put nearly 300 miles on the car, and it only dropped 1 notch on the bargraph. Maintain Inst. or Avg. mileage on the display, and it works properly.

Anyone else notice this?

- J
JaySS is offline   Reply With Quote
Old 06-03-2004, 05:17 PM   #12
Last Ride
CF Senior Member
 
Last Ride's Avatar
 
Member Since: Nov 2001
Send a message via AIM to Last Ride
Default Re: Fuel gauge not working (JaySS)

Quote:
I have pretty much convinced myself that the fuel gauge will not decrement properly if the mileage calculator is left in the "Range" mode. Put nearly 300 miles on the car, and it only dropped 1 notch on the bargraph. Maintain Inst. or Avg. mileage on the display, and it works properly.

Anyone else notice this?

- J
When mine left me stranded, it was on "Average MPG". I usually don't use the "Range" meter, but I did this just to see how far I actually had. Well, 87 miles turned into about 87 feet!

Bryan
Last Ride is offline   Reply With Quote
Old 06-03-2004, 05:45 PM   #13
fhturner
CF Senior Member
 
fhturner's Avatar
 
Member Since: Jun 2004
Location: Birmingham AL
Send a message via AIM to fhturner
Default Re: Fuel gauge not working (JaySS)

Mine is usually on Average MPG as well. I sometimes switch into the Range mode just to see if it is part of this "conspiracy" as well. Sure enough, it will show some absurdly high range (400+ miles remaining when I've already driven 100-200 miles)...
fhturner is offline   Reply With Quote
Old 06-03-2004, 06:27 PM   #14
FU
NCM Lifetime # 982
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Support Corvetteforum!
 
FU's Avatar
 
Member Since: Feb 2001
Location: HOME OF THE FREE. BECAUSE OF OUR BRAVE. Babylon NY The Surcharge State

Default Re: Fuel gauge not working (fhturner)

Remove fuel door.
Remove fuel cap.
Pull rubber off the fuel neck (Gently)
You will then see the unit, a screwdriver and a nut driver and it comes out easy.
FU is offline   Reply With Quote
Old 07-19-2004, 12:38 PM   #15
AlHale
CF Senior Member
 
AlHale's Avatar
 
Member Since: Jul 1999
Location: Murfreesboro TN
Default Fuel Gauge not working

I am having the same problem! Somewhere around 3/8-1/2 tank it goes to empty quickly! Have you tried the Techtron fuel additive solution? I am curious. I am going to try it and see if it works.

Thanks,
Al
94 385 LPE
AlHale is offline   Reply With Quote
Old 07-19-2004, 03:07 PM   #16
ZRWON
CF Senior Member
 
ZRWON's Avatar
 
Member Since: Aug 1999
Location: Whidbey Island Washington
Default

Thanks Frank...think mine has same problem
__________________
Bill Strowbridge
Home of BEAST 2, an AutoMasters Street Skinner version of a Black Widow LT5,
http://www.zr1netregistry.com/ZR1_faq.htm#66
'90 ZR-1 #553 & '93 ZR1 #211 NCRS member #894
Its not about the car, its about the people! ...
... Doug Johnson 1953-2003

PLEASE VISIT >40 years of our VETTE history @
http://home.comcast.net/~bbstrow/
http://www.youtube.com/watch?v=p21dz80uGaA
ZRWON is offline   Reply With Quote
Old 07-19-2004, 06:49 PM   #17
phrogs
CF Senior Member
 
phrogs's Avatar
 
Member Since: Aug 2000
Location: kalamazoo MI
john k powers II
Default

Well my guage has always been a little wierd

Whenever I get to reserve and fill it up it usually takes about 9 gallons to fill her up.

I purposly ran her to fumes once with spare gas with me, after the guage got to reserve and the last 2 bars were gone I got another 70 miles out of it. I dont remember how much gas I had to put in her after that but it was like 15 or 16 after the 2 gallons from my gas tank.


Also when I do fill it up the guage doesnt read all the way to the top as I know it should I think my float arm is bent and is just not reading right on mine, Yours may be the same way, also on the ZR1 net theres a part in the know problems that the bladder in the tank can fall in on itself and cause a lower feul load??

I doubt thats your problem especially if you got 19 gallons into it!
phrogs is offline   Reply With Quote
Old 07-19-2004, 06:54 PM   #18
DDSLT5
CF Senior Member
 
DDSLT5's Avatar
 
Member Since: Jul 2002
Location: This city NEVER sleeps! Frank's back yard!
Default

Quote:
Originally Posted by phrogs
Well my guage has always been a little wierd
Car got the right owner then, eh?

I'm sorry - it's been a typical monday, and now I'm taking it out on the hard working fella protecting my useless azz in the world's biggest beach. Come home soon buddy! :flag
DDSLT5 is offline   Reply With Quote
Old 07-20-2004, 06:57 PM   #19
jhong321
CF Senior Member
 
jhong321's Avatar
 
Member Since: Apr 2004
Location: San Bruno ca
Default

I had the same problem. It all started one day when I filled the tank all the way to full. After that the fuel gauge read full even after I put 200 miles on it. At this point I pulled the pumps and adjusted the floats (they where sticking to one of the fuel pump clamps. It seem to work but now when I get to about 1/2 tanks on the gauge there will only be about 3 gallons of gas left. I am still trying to find the right fix. But i think this is very common
jhong321 is offline   Reply With Quote
Old 07-20-2004, 06:57 PM
 
Go Back   Corvette Forum > C4 Corvettes, 1984 - 1996 > C4 ZR-1 Discussion
Reload this Page Fuel gauge not working
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
new engine break in and fuel guage readings nhlighthouse C4 Tech/Performance 10 05-08-2013 07:02 AM
Service fuel system Payton 63' and 06' C6 Corvette General Discussion 31 12-06-2011 01:27 PM
Fuel Tank problem RidgecrestC5 C5 Tech 10 06-10-2008 04:52 PM
Fuel gauge drops suddenly to empty...help! sgp99 C5 General 24 10-31-2005 11:01 AM
Fuel Guage problem - FIXED Cole C5 General 51 10-14-2004 02:44 PM


Tags
198420corvette20gas20gage20not20working, 1986, 1994, 2000, c4, c6, corvette, frank, fuel, gage, gages, gauge, lighting, problem, working


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

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

Forum Jump

Corvette Store
 
 
C7 Parts & Accessories
C6 Parts & Accessories
C5 Parts & Accessories
C4 Parts & Accessories
C3 Parts & Accessories
C2 Parts & Accessories
C1 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
 

All times are GMT -4. The time now is 04:37 AM.


Emails & Password Backup