Check Engine Lite..Again!

[Bieredalsace]

I think the Check Engine Light has to do directly with the O2 sensor. If I'm wrong someone please tell me.
Anyway mine (one of them..I think there are 2 on the VX) keeps coming on and off. The first time it was low on oil. The second time I don't know why it came one.
By the way is the VX known for oil consumption? This thing uses more oil than my 65 Corvair!!
Any suggestions would be greatly appreciated.
Thanks Guys!

[etlsport]

oil consumption is fairly "normal" for a vx... some people burn as much as a quart every 1000 miles, so burn none at all... mine goes back and forth, but is usually about 1 quart every 3k miles

check engine light could be a huge variety of things from messed up speed sensors to your gas cap not sealing properly to a dirty maf sensor to a stuck egr valve, the only way to tell is to have someone with a obdII scanner check it, you can buy a scangauge which you can get for about 170 from www.scangauge.com or you can go to autozone and have them read it, most will read it for free... dont go to a shop, they will charge you 75-100 just to read it and tell u what it is.. good luck

[djkymar]

i agree with Etl with oil, I think most VX owners has the same problem with oil. In some cases it burns more oil some just a little bit. When i change my oil i start getting new PCV valve and it reduce burning oil so there is one thing to minimize lose of oil. If you have your check engine light on and you dont have scangauge then just go to nerest autozone or place like that and they will check if free and tell you what codes you have and then you can look up online what they mean.
Good luck.

[Trudy Carp]

Guys, I think I really found the answer to the oil issue. Keith @ Denver Isuzu
really does know his product's weak points. He was right about the egr system
getting really cruded up and affecting the fuel mixture to the high side of rich. Couldn't stand near the back of mine when it was idleing, your eyes would tear. I had to replace my egr valve afterwards, it was plugged solid with carbon and you couldn't see the plunger. We tried to save it by soaking the valve plunger area with intake cleaner, but it still won't work properly. Kept sticking open and blowing an egr code for excessive flow. The exhaust is no longer "sting your eyes rich" when you walk behind it. Changed the oil right after the clean out, currently have 2500 miles on the change, and still no oil's been added. I'd have been through 4 qts by now if I hadn't done this. Before, mine was horrible. A trip to Denver and back, down 2 qts. Keeping my fingers crossed that my bearings aren't badly damaged from all that raw gas for god knows how long. BG Products makes the solvent kit and supplies the
machine to alot of shops. It's worth the money guys! Do it!

[Trudy Carp]

I think the Check Engine Light has to do directly with the O2 sensor. If I'm wrong someone please tell me.
Anyway mine (one of them..I think there are 2 on the VX) keeps coming on and off. The first time it was low on oil. The second time I don't know why it came one.
By the way is the VX known for oil consumption? This thing uses more oil than my 65 Corvair!!
Any suggestions would be greatly appreciated.
Thanks Guys!

My "Rosanne Rosanna danna" VX blew so many check engine lites, I bought
my own scanner. Oh yeah, my sister had a 65 Corvair. You needed a biohazard suit to change a tail lamp bulb.
Oxy codes can be caused by reading changes in fuel mixture and it sounds like you are having the same problems I bought mine with. Read my "Egr clean & oil consumption" thread for your answer. How many miles on yours?

[Bieredalsace]

Thanks guys! I'm feelin kinda lazy so I'm headed for my nearest Autozone!
Maybe keeping a suppy of EGR valves in the glove box will help (if I put 'em in).

[etlsport]

heh its the pcv valve you keep in the glove box.. EGR valve is about the size of a soda can and cost $100-200 per lol.. the pcv valve is about the size of your thumb bent at the middle and cost $3-4 each

[Bieredalsace]

Well I went to Autozone like suggested. They plugged in a error code reader and got the code that the EGR valve was at fault. So I handed over $150 and headed home with the Check Engine lite still on. I stopped at a store and when I got back in and turned on the car a big cloud of smoke (like oil smoke= gray/white) blew out the tailpipe !!! And guess what!? The lite went off? Why would that have cured the problem?? Thanks guys!

[Bieredalsace]

Well I went to Autozone like suggested. They plugged in a error code reader and got the code that the EGR valve was at fault. So I handed over $150 and headed home with the Check Engine lite still on. I stopped at a store and when I got back in and turned on the car a big cloud of smoke (like oil smoke= gray/white) blew out the tailpipe !!! And guess what!? The lite went off? Why would that have cured the problem?? Thanks guys!

[nfpgasmask]

So AutoZone had an EGR valve on hand for the VX?

Bart

[Bieredalsace]

Yup!! Very expensive too! But they were very helpful over there. I thank everyone who told me to go there.

[WormGod]

So AutoZone had an EGR valve on hand for the VX?

Bart

Ya, that is hard to believe. Nobody around here ever has ISUZU parts at all. I am a mail-order VX part frequenter.

I cleaned up my EGR thoroughly when I put in my S/C. The plunger was actually in good shape with no build up, just a bit "coaled". Luckily, as I have learned over my many wise years of life, good quality fuel will aid in cleaner burning as well, so stepping the VX up to 93oct since the S/C install, she has run very clean. I have been lucky over her lifetime never to have had her in the shop for any failures or CELs ever to be exact. Never any oil burn or having to drop in an extra qt here and there.

It gets me thinking.... is mine really an ISUZU?

Nah, I think I am just daaaaaaaamned lucky, heh. (knocks on wood)