OBD II LT1 Engine Swap Gotchas???

David A. Cooley n5xmt at bellsouth.net
Wed Feb 3 21:53:37 GMT 1999


At 04:26 PM 2/3/99 -0500, you wrote:
>"David A. Cooley" wrote:
>> >Pre OBD_I?  But that would mean using an ECM that's pre 1988.
>> 
>> Actually, the 94/95 was more like OBD_I 1/2...  93 and earlier should work
>> without the rear sensor
>
>I'll give you the OBD 1 1/2 - I can't use a paper clip to flash SES
>codes on my '94 Z28. However, there is *no* O2 sensor after the cat.
>Know that for a fact. The stock exhaust is sitting in my garage storage
>closet - and it butts right up to the cat...
>
>Plus, the ALDL info available is significantly more for the '94/95 than
>there was for the '93. Not that more is better, there's just more
>there... ;)


Yep.. I've got a 95 LeSabre with the 3800 V6.  No 2nd O2, but there is a
temp probe in the exhaust immediately after the cat... 
I keep thinking the guys on the Impala SS list said there was a 2nd O2 on
each bank aftrer the cat, but I copuld be wrong...
(Won't be the first time!)

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           David Cooley N5XMT           Internet: N5XMT at bellsouth.net
     Packet: N5XMT at KQ4LO.#INT.NC.USA.NA   T.A.P.R. Member #7068
       I am Pentium of Borg...division is futile...you will be approximated.
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