What are reasonably priced OBD readers for a 1995 Jaguar XJR and 1992 Corvette?

Thanks,
Sixto
87 300D

I'm not sure about the XJR. There were a FEW '95 cars that were already OBDII which was mandated for all '96 models. Google and find out if it is OBDII. If so then it's wide open with dozens of different readers.

For the '92 Vette, you shouldn't need a code reader. Find a Haynes manual for it and it will tell you how to draw codes by simply shorting a few pins in the ALCL and then read the flashes of the SES light.

Hope this helps.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

I had a '90 Chevy pickup that was OBDI. I have a little box that plus into the diagnostic port and causes the CEL to flash out codes which you can look up in this fat little book that came with the checker.

Before OBDII, manufacturers had a variety of ways to pull codes from the systems such as the aforementioned "paperclip" method which worked on some early Toyotas and others.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

Ya, the chev would just be blink codes, unless you get one of the GM proprietary tools when are very expensive.

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

For GM OBDI, the only tool you need is a properly bent paper clip.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

There are "code readers" available for pre OBDII cars, but thet still require you to count flashes/ beeps, sweeps of a meter needle, and cost more than the above method.

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1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags

Not always. The factory tools can do more sometimes, but are generally very expensive. (VW is one exception I can think of, my VCDS will work on cars back to 1990)

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

If you are doing technically inclined stuff like retuning the vette because of a modified motor-- even simple like a free flowing air filter would need some--cam change, headers definately. you need to find the aldl port-and get a cable for your laptop and learn whats needed.

It won't work on an OBDI car. You can not download parameters as you can on later model cars. The only way to change parameters on these is to burn a new memory chip for it. In the days of these cars, there was a whole industry that provided chips for parameter changes.

When the later OBDII cars came along where parameters could be downloaded, those vendors shifted to developing and selling the programmers.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

Incorrect larry its done all the time--just because its called a prom instead of an eprom doesnt mean it cant be hack'd.
maybe what you are saying is an owner cant get his hands on the base map---they are all redily avalable.
DIY PROM - Third Generation F-Body Message Boards

DFI and ECM - Third Generation F-Body Message Boards

Even if its an earlier -simpler TBI car that just had the paper clip access there are relatively simple ways to add a aldl port,
Im doing it to a gm 749 Turbo ecm from a 88 sunbird gt computer and harness I spent two yrs looking for-that one was speed density port efi

These programmable obd1 gm computers--like the 730 and used turbos are the last, best kept affordable speed secrets.