"Dash-doorhandle-6 cyl none the richer" (dash-doorhandle-and-bondo) 01/13/2016 at 08:30 • Filed to: None

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Got a groovy mystery for you oppos.

My friend’s 88 cutlass has a check engine light. It also has a carb. It has a diagnostic port, we hooked up a old snap-on red brick scanner to it and it thought the car had six cylinders. I know there’s some sort of trick jumping terminals on the diagnostic port. Could google it but you guys are more fun. Car is not new enough or old enough to fall within my experience. Car is shiny (I did that part.)

There’s lots of ways to make an idiot light go away. He wants to know what it is though.

Bad Idea Hat > Dash-doorhandle-6 cyl none the richer 01/13/2016 at 08:47

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“Looks like you’ve got some kind of alternate universe in there or something.”

Dash-doorhandle-6 cyl none the richer > Bad Idea Hat 01/13/2016 at 08:51

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I do have many zany adventures, mostly car related.

RamblinRover Luxury-Yacht > Dash-doorhandle-6 cyl none the richer 01/13/2016 at 08:55

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My completely uneducated guess would be something involved with the EGR system or cat, since there’s probably nothing involved with the carb as such going wrong.. Unless it might be the anti-knock sensor picking up something.

Nibbles > Dash-doorhandle-6 cyl none the richer 01/13/2016 at 09:18

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I know this. It involves a paperclip or a fork. Hold on a sec

I think it’s the two top rightmost terminals, something like this:

000000XX
00000000

Where X is the terminals you jump. Turn the car off, jump those two, turn the car to the on position and count the flashes. It’s like morse code. It’ll flash quick a series, then wait, then flash quick another series. Each series is a number so FLASH FLASH Pause FLASH pause pause (repeat) would be ERROR 21

deekster_caddy > Dash-doorhandle-6 cyl none the richer 01/13/2016 at 09:22

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I thought it was to jump A and B on the diagnostic port, then count the check engine light flashes.

Takuro Spirit > Dash-doorhandle-6 cyl none the richer 01/13/2016 at 10:42

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Are those fucking running boards on a fucking car?

Nibbles > Nibbles 01/13/2016 at 10:43

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___||___
|000000XX|
\00000000/
————

Dash-doorhandle-6 cyl none the richer > Takuro Spirit 01/13/2016 at 10:48

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Yeah, g bodies and other cars of this vintage had them more often than not, it’s for sale and I advised against removing them. The next guy can find out what lurks beneath. But yes, these are an abomination.

Dave the car guy , still here > deekster_caddy 01/13/2016 at 18:38

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That is the basic old way. When I went to one of our GM training center classes in Cleveland we got a brass jumper tool with two ears that shorted the terminals perfectly. If that old Snap-on scanner is thinking the car had 6 cylinders the car could have an issue with the PROM. The ECM in those had a removable chip that determined if the computer was calibrated for 4 ,6 or 8 cylinders , AT or MT etc. I’ve seen a bad PROM make a scanner show an old carbed car having turbo codes, secondary air injection and fuel injection issues on a the car wasn’t even equipt with those items. , Those old OBD cars are way harder to diagnose than an OBDII vehicle. You had to know a car to track down an issue once you have the code. Back in those days there were more real technicians not just this generations parts changers.

Dash-doorhandle-6 cyl none the richer > Dave the car guy , still here 01/14/2016 at 09:41

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Found and removed the computer, ran fine without, pulling the battery made the light go away for 30 minutes or so. If I get a code that somehow makes sense, I’ll talk to the old school Olds guys in town. I think that this car probably has an O2 sensor, and being parked for years then burning old gas gave it a ganky O2 sensor. will report back when I see the car.