driveing my car (89 hatch with d16z6 full obd1 conversion) lastnight and all of a suden i went into safe mode. and am getting a bunch of cel's:

16, fuel injector
17, vss (no idea why my mph is registering)
21, vtec solenoid
43, fuel supply system oxygen sensor


what should i make of this?

thanks alot larry

 

Get out your manual and see if those circuits share a common power supply or ground. My guess would be a ground.

 

i doubt the manual is going to list a schematic for 4th gen hatches converted to obd1 lol please help

 

First find out if it's just an intermitent failure. Reset your ecu, and check to see if the codes come back after a test drive. If they do, then you will need to research each CEL.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spun Vtec &raquo;</TD></TR><TR><TD CLASS="quote">i doubt the manual is going to list a schematic for 4th gen hatches converted to obd1 lol please help</TD></TR></TABLE>

hahah

This has happened to me a couple times.... ONce it was a bad ground, the other time i reset the ecu and it went away? But i would definetly make sure you are getting good ground all around.

 

which ground should i check?

 

hey bro,

I will help you try to get it sloved.

The fuel injector code will make ur car rev limit at 3.5 it caused by not getting enough current to the injectors check the connections 1. Second check the injectors that’s see if its giving the right amounts of OHMS. Check it at both places at the ECU and the place you jointed the fuel injectors all 8 of them.

 

Also check the wiring for the vtec code make sure its getting enough current and going to the right place. Looks like the VSS is not wired correctly check the wiring most likely it. Take it easy might take a few days or even weeks to get it fixed but it will be done take it easy don't stress. Check the OBD1 manual it will make sense after reading couple of times and try the CODE trouble shooting section!!!

 

WEll the thing is.....when u pop 4 cel's like that, that dont seem to really be connected, its like what are the chances taht all these things go at once? When it happened to me, my valve cover ground was not making good contact. Also, because u are throwing the vtec code, just double check and make sure your oil level is good.

 

Check to see if your alternator is charging. The VSS and O2 sensor heater codes are related. The Vtec could also be on the same circuit. If the alternator is not charging, then you blew the fuse that excites the alternator, which also supplies the VSS and the O2 sensor heater. Otherwise, you have a bad ground somewhere. Check them all. Don't miss the one that is bolted to the thermostat housing.

 

good advice guys ill check all that!

 

and i dont have an elecrtonic vss anyways but i wasnt getting any codes before. my speedo is working and im still getting 17. (was ok for months without any codes)

 

Im getting code 17 but I have a electronic VSS and my speedo works perfectly. I have the signal from the vss going directly to the cluster. Was I suposed to wire it to the ecu first?

 

check the alt/sp. sensor fuse in the fusebox inside the car under the dash.

 

everything is ok now i checked my grounds which were all in working order. the thing that i think was causeing the problem, was the ecu wasnt getting ground . I ran a wire to the chassis of the car connected it to the ecu and bingo no more cel's.

thanks alot for all the help!

Larry

 

well turns out acually i think that it was the thermostat ground. ill post when i know for sure.

 

you should always ground the wires very GOOD.

you cant afford to have a BAD GROUND!!!