I replaced the battery in my Porsche 911 (993 series), clearing the Motronic codes. Now I need to get my emissions check completed but the codes are reading ''not ready''. Does anyone know what sequence of cold starts, etc. the Motronic needs to compute all of the values?
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Re: Motronic Event Sequence
You can go to your public library and they have the automotive shops mechanic online software called AllData. It is the best auto technician database available today. You can print out specific troubleshooting procedures, diagrams, step-by-step istructions, and soforth. The typical person cannot afford to pay for this service just automotive shops, etc... that is why the public library made it available to everyone and for free to view and print out material. This should Fixya! Good Luck!
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if the obd ll port not working replace the accessory fuse ---if just no codes and system ready thats the normal setting you want --do not clear codes and or change batteries since doing so clears all memory and vehicle has to recycle through all emissions to be ready
I would recommend that you check a few things before you attempt to start it. It is not uncommon for mice to build nests on top of the engine. This could restrict cooling and damage the engine. You should certainly change the oil first. The 85 has EFI Motronic injection so you may have issues with the injectors as well. Do your self a favor and post this question to the Pelican Parts forum. Do a google search and you will find it. Also check out eurocarresource.com to see if they have any info.
The check engine light is on to tell the driver the computer has found a problem that affects performance and emissions or fuel economy. The computer would need to be scanned for trouble codes, the problem fixed, then the codes cleared to make the light go off.
Has the battery been disconnected, or has it gone dead? Every time the battery is disconnected, all trouble codes are cleared, the check engine light is turned off, and all system monitors are reset. For the monitors to get back to a 'ready' status, the vehicle needs to go through one or more (sometimes quite a few) drive cycles.
When you go to the emission station, they check for codes, AND also check to see how many of your monitors are in a 'ready' status. (This keeps people from disconnecting the battery, and thus clearing any trouble codes, in order to pass emission tests).
If you have not disconnected your battery for a while, but the monitors are still not showing 'ready', you need to have a qualified shop check out your computer and other electronic systems.
C1145 is a Right Front wheel speed sensor fault
C1175 is a Left rear wheel speed sensor fault.
P1000 System OBD check not complete since last memorie clear which mostlikely means that the car has not completed the drive cycle to set all monitors for the engine emissions. ( it may just need to be driven a more.
As for the wheel speed sensors if you have replaced them the ABS codes need to be cleared. the engine code reader and clearing tool will not do it. A scanner with ABS capabilities is needed. On some cars if you disconnect the battery and wait 3 mins then re connect the battery, that will clear all codes. then the car needs to be driven to set all monitors for engine emissions.
If you have already cleared the codes. and you have repete same codes for the ABS, you would need to look the wireing over for possible wire rubs that are causing the faults. or the ABS computer itself is at fault.
If your car have motronic 1.3 the most accurate and simple way to find your problem is put the key in the ON position (but do not start it).Then fully press the accelerator and fully release it 5 times.Once you have done this the Check Engine light should blink once and after a short pause start to blink a four digits code. The code language and what it means is explined on this link:http://e30world.com/fuel/BMW-E30-DME-Motronic-fault-codes
You will need the system scanned. See dealer/specialist who have the tool to do this. Maybe air mass sensor, vapour sep issue or oxygen sensor. Fault should be logged in event history, so should not be too hard to pin point cause.
misfire :-------- try checking your 02 sensors /fuel pump and filter. for 51 cylinder misfire :---
Change the coil. Period. Very easy to remove from the vehicle if it's a 4 cyl. Follow that spark plug wire from the spark plug to the other end. What it's attached to you should replace
for 54 cylinder 5 misfire :---First you have to eliminate the most obvious problems, like spark plug and spark plug wire. If you replace those and you still have a misfire, then it's a good idea to look for a vacuum leak in the intake manifold