After 19 Years And Only 59,000 Miles My 86 Fails Inspection.....!!!

[Viet Nam Vett]

I don't know what the shop charges for testing, but it might be a good idea to drive it a bit and then have it tested there before buying a replacement chip.


Good Luck!!

Jim

Thanks Jim....

 

[Viet Nam Vett]

VNV

Here are the EPROMS listed for the '86 Vette. You will have to go through and find the one that matches all of the RPO codes for your car to find out which one you need. Some are easy enough ... GM1, G44, Y07 is a coupe, Y67 is a Vert (I think) ... others are more difficult .... MH5 & MK2 are both manual trans (I didn't know there was a difference in the manual trannies) ... KB2, NM8, and VE1 I have no idea what are.

Y07 A/Trans (MD8) 2.59R (GM1), KB2, FED = GM/AC Delco P/N 1227942

Y07 M/Trans (MK2) 3.07R (G44), KB2, (Exc VD1 Export) = GM/AC Delco P/N 1227943

Y07 M/Trans (MH5) 3.07R (G44), KB2, FED = GM/AC Delco P/N 1227943


Y07 A/Trans (MD8) 3.07R (G44) (Exc Export NM8, VE1) = GM/AC Delco P/N 1227944

Y07 A/Trans (MD8) 2.59R (GM1), 2.73R (GU2), FED (Exc KB2) = GM/AC Delco P/N 1228107


Y07 A/Trans (MD8) 3.07R, FED (NA5) (Exc KB2, NM8, VE1 Export) = GM/AC Delco P/N 1228109

Y07 M/Trans (MK2) 3.07R, FED = GM/AC Delco P/N 1228473


Y07 M/Trans (MH5) 3.07R (G44) (Exc KB2) = GM/AC Delco P/N 16063919

Y67, MD8, 2.73R (GU2), 3.07R (G44) (Exc KB2, Export) = GM/AC Delco P/N 1228109

Y67, M/Trans (MK2), 3.07R (G44) (Exc KB2, Export) = GM/AC Delco P/N 1228473

Hope this helps.

Thanks Hrtbeat...I appreciate you taking the time to type that info. As I posted down the road from your post.. The 122943 is the one for me...it is the 4+3 Iron head chip.

I Have a friend who own's part of a Dealer ship and I had him resarch the issue. He came up with the 122943 and it says discontinued.

Although also...GM does give a list of other possable vendors who list stock and quanity . I did manage to locate a #1228473 which is for the Alum head 4+3 Manual Eprom. Noone seemed to have the iron head 943.

I went ahead and ordered it. Don't know what the difference would be between the programing for Iron Or Alum head..but I don't think the fuel curve would be any different.

So since that's the area I'm concerened about...I'll give it a shot.

Thanks again for the excellant research. I'll prit this info and save it...

 

[Viet Nam Vett]

Don't you just have to pass emissions for that year? Say you own an 86, don't you just have to be within the limits of what was set in 1986? I would have no clue since IN doesn't do emissions testings

Yes I think you are correct. But CO & HO Levels are I think the main critieria that the State of NJ are concerened with. Since my car has most of the same pollution control devices as todays cars..it's required to meet the Federal standarts of today.

Ther was a time when it did out preform most newer cars due to the superccharger forcing cool air into the motor and making it work less requirering a smoother leaner fuel mixture. I have seen the inside of my motor at 38K miles.

I had to replace a leaky oil pan gasket. The motor was spotless inside. Not a spec of sludge or carbon anywhere.

Anyway I'm not an emission expert but I have kept up with the maintanance on the Emission system. I kinda proud that my motor makes good clean HP and all the emission stuff is intack and functioning.......Well...except for this glitch.

 

[TommyT]

I thought of that but your car has to be 25+ years old.....

Actually it doesn't. You just have to have proof of specialty insurance and certify that the car will only be driven 3000 miles per year. It's a way out if you don't use the car much. I believe that you'll have to re-register the car in order to apply for the inspection exemption though. It's a way out if you don't use the car much.

I hope this helps.

Tommy

 

[Hrtbeat1]

NO Problem!

Thanks Hrtbeat...I appreciate you taking the time to type that info. As I posted down the road from your post.. The 122943 is the one for me...it is the 4+3 Iron head chip.

I Have a friend who own's part of a Dealer ship and I had him resarch the issue. He came up with the 122943 and it says discontinued.

Although also...GM does give a list of other possable vendors who list stock and quanity . I did manage to locate a #1228473 which is for the Alum head 4+3 Manual Eprom. Noone seemed to have the iron head 943.

I went ahead and ordered it. Don't know what the difference would be between the programing for Iron Or Alum head..but I don't think the fuel curve would be any different.

So since that's the area I'm concerened about...I'll give it a shot.

Thanks again for the excellant research. I'll prit this info and save it...

The stuff I copied down was out of the 2000 GM Microfiche Index (good tool to have.) I did some more research and found the same you did. Many of the P/N's I gave are no longer available. I was going to suggest the 1228473 p/n but looking at the BCC's (broadcastcodes .... the difference in the "chip") I assumed that it was for an Aluminum head. Well you know were assuming leads . I did find a P/N that has BCC's that are for Iron heads, and are still available. Again this is assuming according to the BCC's ... P/N 1227944 ... although it is for an Auto tranny.

I did find that the KB2 designation is for the Iron head. Not sure of the difference between the MK2 and MH5 trannies. Did they offer a 4 speed manual without the OD? According to the "Corvette Black Book" the RPO is MM4 for the manual. It doesn't indicate that there is anything other than the Doug Nash but I can't tell you for sure.

I think you are on track with the fuel curves at the 2400 RPM range. Is that the standard range to test? Maybe it would be more beneficial to have them test it on the Dyno ... the car is under load and not just idling so to speak, so it should be working harder ... not just huffing.

The programming I've done for these cars has only been on Aluminum heads so I can't tell you if there is a difference in the fuel curves. I looked through my archives and coldn't find any of the BCC's for Iron heads, I did find some for the Aluminum heads but none that match the BCC's in the GM Fiche.

 

[Viet Nam Vett]

Actually it doesn't. You just have to have proof of specialty insurance and certify that the car will only be driven 3000 miles per year. It's a way out if you don't use the car much. I believe that you'll have to re-register the car in order to apply for the inspection exemption though. It's a way out if you don't use the car much.

I hope this helps.

Tommy

Thanks Tommy,

The car Is under a collector car policy as as classic and is driven less then 3000 miles per year. I did speake to DMV today and they said only cars that are 25 + years can have QQ plates.

Maybe I miss understood.... Any one want to clarifie???

 

[bossvette]

I ordered some parts from SLP in Toms River for my Wifes SS and got to talking to the sales guy who told me he had his Vette registered where he didn't have to go thru inspection it wasn't historic but something else, limited milage use. You need to work your way up the food chain in DMV till you hit someone who knows what they are doing to get the correct info.
good luck we still get hit by BMV and I have been out of NJ for 10 years. They even had a lein on my house for a surcharge or something; cost me $300 three years ago and then last year when I bought my Vette they had a thing on my credit report for $100 to get my non-existant NJ drivers license back I refer to NJ as Nazi Jersey

 

[Viet Nam Vett]

The stuff I copied down was out of the 2000 GM Microfiche Index (good tool to have.) I did some more research and found the same you did. Many of the P/N's I gave are no longer available. I was going to suggest the 1228473 p/n but looking at the BCC's (broadcastcodes .... the difference in the "chip") I assumed that it was for an Aluminum head. Well you know were assuming leads . I did find a P/N that has BCC's that are for Iron heads, and are still available. Again this is assuming according to the BCC's ... P/N 1227944 ... although it is for an Auto tranny.

I did find that the KB2 designation is for the Iron head. Not sure of the difference between the MK2 and MH5 trannies. Did they offer a 4 speed manual without the OD? According to the "Corvette Black Book" the RPO is MM4 for the manual. It doesn't indicate that there is anything other than the Doug Nash but I can't tell you for sure.

I think you are on track with the fuel curves at the 2400 RPM range. Is that the standard range to test? Maybe it would be more beneficial to have them test it on the Dyno ... the car is under load and not just idling so to speak, so it should be working harder ... not just huffing.

The programming I've done for these cars has only been on Aluminum heads so I can't tell you if there is a difference in the fuel curves. I looked through my archives and coldn't find any of the BCC's for Iron heads, I did find some for the Aluminum heads but none that match the BCC's in the GM Fiche.

Thanks ...

I'm sure all 4 speeds only came with the DougCrash OD unit.

I think you are on track with the fuel curves at the 2400 RPM range. Is that the standard range to test? Maybe it would be more beneficial to have them test it on the Dyno ... the car is under load and not just idling so to speak, so it should be working harder ... not just huffing.

When the car is placed on the Emissons Dyno It's worse...Why??? Because the dyno puts a load on the rear wheels forcing the motor to chug down and make HP to overcome the Dyno Reverse brake effect that the computer adds.

That's why they load the rear wheels...to make the motor smoke....:L

I have an exemption do to the fact that it is a low mileage car. They only use the tail pipe probe at that point. But with the Dyno test they measure motor RPM and Road Speed at the same time. The Puter Monitor Shows a graph with both speed and RPM which the Emission tester must keep in line in a red box. After 30 seconds he hits a snapshot button which captures the test.

Just prior to the test the puter tells the operator to precondition the motor which means a 2500 rpm run up for 30 seconds. This clears the cyl's prior to the dyno load test....Then back to idol..then the test begins as above

So I lucked out with just the the probe up the Hy-Ne.

I'll keep you posted after the chip change...but that won't be till after Carlisle.

Right now I'm finishing up my 65 cp with the 502 and Keisler 5sp. I'm going to relax and enjoy the show...

 

[wildbill486]

I'd be moving.

 

[Viet Nam Vett]

I ordered some parts from SLP in Toms River for my Wifes SS and got to talking to the sales guy who told me he had his Vette registered where he didn't have to go thru inspection it wasn't historic but something else, limited milage use. You need to work your way up the food chain in DMV till you hit someone who knows what they are doing to get the correct info.
good luck we still get hit by BMV and I have been out of NJ for 10 years. They even had a lein on my house for a surcharge or something; cost me $300 three years ago and then last year when I bought my Vette they had a thing on my credit report for $100 to get my non-existant NJ drivers license back I refer to NJ as Nazi Jersey

Yeah...must have been a Lowly Desk Jocky...Maybe I need to talk to a "Field Marshal".....
I'll check back with them to morrow,,,

 

[G Winter]

My guess would be a diff timing curve with the alum. heads verses the cast iron heads. You have different heat charachteristics.

 

[MRANT212]

Since Im a resident of the lovely Garden State the way to avoid the emmissions inspection is by registering it exempt under 3000 miles per year. all you do is run it through inspection without emmissions. They check your odometer reading to make sure you are within the limits. I was going to do it with my 88 but had a privete station pass it. The inspection sticker is a triangle sticker vs the square/rectangle one you would normally get. Historic plates you probably cannot get due to the age of the car. To get QQ plates (historic) I think the car has to be either 20 or 25 years old. At the inspection station check with the supervisor for the correct info or contact the DMV. Hope this helps!!! I was just in your neighborhood earlier today (Little Egg Harbor) actually. Good luck in getting this done!!!

Anthony

 

[BarryK]

Mark

I don't think ther emission requirements are quite as strict here in De so as an option you are welcome to come over here, register the car as a De. car and pass inspection here. Of course you will need a DE. address to do that but you can use mine and just keep the car here in my garage next to Baby.......... you can come visit your Vette whenever you want. In the meantime I'll keep her clean and well excercised for you

 

[Viet Nam Vett]

My guess would be a diff timing curve with the alum. heads verses the cast iron heads. You have different heat charachteristics.

Yes...You are correct... My Friend Bill B has emailed me and explained that there is more advance with the alum head Eprom due to less chance of detonation because of the heat transfer of the heads..

 

[Viet Nam Vett]

Since Im a resident of the lovely Garden State the way to avoid the emmissions inspection is by registering it exempt under 3000 miles per year. all you do is run it through inspection without emmissions. They check your odometer reading to make sure you are within the limits. I was going to do it with my 88 but had a privete station pass it. The inspection sticker is a triangle sticker vs the square/rectangle one you would normally get. Historic plates you probably cannot get due to the age of the car. To get QQ plates (historic) I think the car has to be either 20 or 25 years old. At the inspection station check with the supervisor for the correct info or contact the DMV. Hope this helps!!! I was just in your neighborhood earlier today (Little Egg Harbor) actually. Good luck in getting this done!!!

Anthony

Thanks Anthony,
Yep...My friend Bill B emailed me the link with the info on the under 3000 mile sticker. Thanks....

 

[Viet Nam Vett]

Mark

I don't think ther emission requirements are quite as strict here in De so as an option you are welcome to come over here, register the car as a De. car and pass inspection here. Of course you will need a DE. address to do that but you can use mine and just keep the car here in my garage next to Baby.......... you can come visit your Vette whenever you want. In the meantime I'll keep her clean and well excercised for you

Heh Barry...
Sounds Great... Just don't tell any one ...OK..??

 

[ON 7TH]

MMMMMMMMMMM, your shop should of furnished ya with a computor printout with the spec's. this is also forwared to trenton.
i know ya got a 86 but the CO standard for my 85 is >>> 0.88

 

[Viet Nam Vett]

MMMMMMMMMMM, your shop should of furnished ya with a computor printout with the spec's. this is also forwared to trenton.
i know ya got a 86 but the CO standard for my 85 is >>> 0.88

Yep...I do have a print out and it say....(0.50 ) Is the highest for pass ...My reading (0.86)....Fail.

I don't understand yours being an (0.88)..Your emission equip should be simalir to mine.

What is the date on the print out?.. Mine is dated 8/18/05. I was told theychanged it. Maybe yours was ok at the time of your test. What does it show for the high number pass..??

 

[ON 7TH]

07/15/2005
NOx STANDARD >> 1184 << MY READING 541 /PASSED
HC STANDARD >> 157 << MY READING 87 /PASSED
CO% STANDARD >>0.88 << MY READING 0.52 /PASSED
i got 90k on the stock mill/700r4
dyno tested at Ancora NJ
if it was changed it was this month
i also have a 78,that has QQ'S on it now,that usually passed but thay had to find a inspector who could drive a stick.

 

[Viet Nam Vett]

07/15/2005
NOx STANDARD >> 1184 << MY READING 541 /PASSED
HC STANDARD >> 157 << MY READING 87 /PASSED
CO% STANDARD >>0.88 << MY READING 0.52 /PASSED
i got 90k on the stock mill/700r4
dyno tested at Ancora NJ
if it was changed it was this month
i also have a 78,that has QQ'S on it now,that usually passed but thay had to find a inspector who could drive a stick.

Well Crap...It looks like it was changed ..I don't think it would be different in Ancora then in EHT nj...?????