Motor Vehicle Maintenance & Repair

Questions tagged [obd-i]

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1answer
56 views

Do these 02 Sensor readings from obd1 look correct?

I have an issue at MOT test where I get high CO readings. I've triple checked the following: Exhaust leaks New downpipe Air/Vacuum leaks Compression MULTEC electronic Carb new idling control stepper ...
1
vote
0answers
20 views

The HG fell from 22 to 18 after 'addressing' post-supercharger intake leaks

I have an ODB 1 supercharged 540I/6 (E34 1995 if that matters) that was hitting 10 PSI of boost relatively easy last summer. The car has been sitting for a while, and the boost was barely touching 5 ...
0
votes
0answers
88 views

E34 BMW V8: unusual CAMshaft sensor signal voltage from ECU

My BMW is an E34 with an M60 engine (OBDI) and one morning started idling and running poorly enough to not be drivable. Unplugging the camshaft sensor with the engine running made no change to the way ...
0
votes
0answers
20 views

Check engine light goes on and off randomly on hills while in overdrive (OBD-1)

1990 Toyota Celica 1.6L 4afe, 5 speed Recently the check engine light has been coming on while I am on the highway in 5th , usually but not always when going up a slight hill. If I keep driving ...
0
votes
0answers
39 views

What are best steps to diagnose a bucking engine/

My 1992 Nissan with SR20DE (2.0 liter 143 HP o2 and MAF equipped OBD I engine, 16 valve, fuel injected), bucks. I own this car for ten years now and a lot has been replaced. Not always in attempt to ...
0
votes
3answers
441 views

Are all OBD current data available on the CAN-BUS without request?

I am analyzing the CAN-BUS data from my motorcycle. I logged all the CAN-BUS traffic. One time with an ELM327 adapter connected and one time without. I am searching for the value of the Intake air ...
0
votes
2answers
8k views

95 Honda civic ex, OBD port not giving check engine light codes

On my 95 Honda civic ex, the check engine light has been on for a while, so I wanted to check what for. I looked up where to find the OBD port, and found it under the glovebox. It looked somewhat like ...
3
votes
3answers
10k views

Live scan tool for OBD 1.5 GM transitional?

1995 S-10 Blazer 4.3L Vortec V6 (vin W) with Powertrain Control Module (PCM) 1995 was the OBD transitional year for GM. The PCM itself is OBDI, but the interface connector has the 16-pin D-style ...
3
votes
1answer
9k views

CEL 12, 21, and 55 on '94 Jeep Grand Cherokee

So, I've pulled the codes from my car based on the helpful information provided here: Check Engine Light on '94 Jeep Grand Cherokee Now, I need just a little help understanding what the codes ...
2
votes
1answer
29k views

Check Engine Light on '94 Jeep Grand Cherokee

How do I get Check Engine Light codes (OBD-I) from a '94 Jeep Grand Cherokee, and where can I look them up?
1
vote
1answer
401 views

1995 VW Eurovan OBD I to OBD II adapter

My 1995 Eurovan has a check engine light coming on. I have a standard OBD II reader but this vehicle requires a OBD I reader. I see they sell OBD I to OBD II adapters online but I have read that with ...
3
votes
0answers
79 views

1987 GMC Sierra - Can't connect to OBD diagnostic connector

I own a 1987 GMC Sierra and it has an ECU, I took it to a workshop to see if I've any issues, when they tried to connect a diagnostic reader to the connector (underneath the steering wheel) they ...
3
votes
3answers
259 views

Is there a viable option for updating OBD-I to OBD-II in order to increase possibility of engine tuning?

I've been told this is a terrible idea and just wanted greater confidence even though the warning against has been taken. I want to be able to fine tune a 1990 car with an OBD-I port in addition to ...
2
votes
1answer
76 views

10/89 (1990) Subaru Legacy EJ22 - OBDI Code 45

10/89 Subaru Legacy EJ22. NA. Multiport Fuel Injection. Throwing... Code 45: Pressure duty solenoid (turbo)/atmospheric pressure sensor circuit (non-turbo) Where is this thing located? I ...
3
votes
2answers
2k views

90 Subaru Legacy - Pull Codes

I have a 10/89 Subaru Legacy I am working on. OBDI most likely, but trying to figure out how to get the check engine light to blink and do its thing. We've pulled the panel under the steering column ...
9
votes
1answer
42k views

Can I use an OBD2 Scan Tool on older GM vehicle?

I can get an adapter that connects my OBD2 scan tool to my 12 pin GM scan tool connection. But will the tool be able to read the codes and tell me anything useful? Or do I need to get a scan tool that ...
2
votes
1answer
1k views

OBD/OBD2 port on a 1993 mitsubishi triton MJ

Does anyone know if there is an ODB2 diagnostics port on a 1993 Mitsubishi Triton MJ 4x4 Ute?