checking/clearing OBD1 trouble codes?

Dizzy · Post by **Dizzy** » Wed Dec 03, 2003 3:18 pm

Gang -

I installed my boost controller (Blitz SSBC) and the car ran fine for a coupla days. It is now hesitating quite a bit under boost. I re-connected the stock solonoid and it is still hesitating. Rats.

Anyway, I would like to check trouble codes. How do I do this with OBD1? Thanks.

Post by **Legacy777** » Wed Dec 03, 2003 3:20 pm

searching would yield you an answer.....

you would have probably found this http://surrealmirage.com/subaru/engine.html

Dizzy · Post by **Dizzy** » Wed Dec 03, 2003 4:59 pm

Josh -

Thanks for the link. Yes, I'm sure I would have found it if I searched long enough. The next time someone asks this question, I'll make sure to pass along the link. (good karma, ya know.)

boostjunkie · Post by **boostjunkie** » Wed Dec 03, 2003 7:08 pm

How does one clear the stored codes? I used both methods in the above link (hooking up the connectors and battery dance) but when vrg3 hooked up his select monitor up to my ecu two codes were still present in the system. After he cleared them with the sm the codes never came back.

DOA · Post by **DOA** » Wed Dec 03, 2003 9:53 pm

Bit of a long shot on the boost hesitation front but I had similar problems and managed to cure it by replacing ALL of the boost and vacuum signal pipes and making sure that none of them could leak (bit of silicone gasket on all nipples did the trick). Seing as youv obviously cut, t'd into or generally played with one of the boost pipes it seems pretty logical that you could have a caused a similar problem.
Resetting the ECU can seam a bit impossible as well but if you read the instructions on the site linked above and keep at it they will clear (or at least till they come back lol).

Dizzy · Post by **Dizzy** » Wed Dec 03, 2003 10:47 pm

Some of the vacuum lines (smaller diameter like the one coming off the manifold) are brand new. It makes me wonder if the previous owner was fighting this problem.

I bought a new battery & got new plugs over lunch. The old ones were NASTY and they were the Bosch units. I'll install the new battery & plugs before I do the reset. Hopefully, that will do it. (crosses fingers)

PS - I checked the codes before I pulled the old battery & sure enough, I had a code '49', which an Air Flow sensor code. That makes sense. I started the car with the MAF plug unplugged when I was installing the controller.

legacy92ej22t · Post by **legacy92ej22t** » Thu Dec 04, 2003 1:03 am

boostjunkie wrote:How does one clear the stored codes? I used both methods in the above link (hooking up the connectors and battery dance) but when vrg3 hooked up his select monitor up to my ecu two codes were still present in the system. After he cleared them with the sm the codes never came back.

I had 4 codes that wouldn't clear no matter what I did either and someone finally suggested that when doing the connector method after turning the key to "acc" hold the gas pedal in for 10 seconds instead of 3 before starting the engine. worked for me and the codes didn't come back.

Dizzy · Post by **Dizzy** » Thu Dec 04, 2003 3:04 pm

The new battery & plugs went in last night. The ECU was also reset. The hesitation is gone, daddy, gone. That's the good news.

The bad news is there was a good deal of oil on one of the plugs. (#1) The plug was pretty loose

, so I hope that had something to do with it. It may be time for a compression test.

DOA · Post by **DOA** » Thu Dec 04, 2003 6:26 pm

That would be me legacy92

and to dizzy, my hesitations went away every time I reset the ECU, only to come back a few days later, good luck tho

.

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checking/clearing OBD1 trouble codes?

checking/clearing OBD1 trouble codes?