Hey Primers. I'm looking for some advice/help on a problem I'm having with my car. The problem is sometimes the car cuts out when I hit a bump. Sometimes I get a ABS/TCS warning (both lights on), sometimes that is associated with a loss of electrical power (no radio) and sometimes a full loss of electrical power and engine cut off. When the ABS/TCS lights turn on it is just a blip; I see the lights and they go out. Sometimes when I see the ABS/TCS lights the radio goes dead and that lasts for 1-2 seconds. One time I did get a full loss of electrical and the engine shut down for 2 seconds and then everything came back. It seems to happen when I hit a bump however, there must be some unknown specific circumstance as it doesn't happen all the time.
I have tried to pull the codes but there are none (using code reader as well as using the service connector)
For some back ground information the car is a 97, 6spd with just under 100K Kms. The only mod to the electronics is a USA Spec adapter. No engine mods just comptech headers and AP-X exhaust. The only other major change is the EPS rack was swapped for a manual rack. Prior to this issue, last year I replaced the starter (due to a click no start issue) and the battery (due to age). After those replacements the car ran fine until the beginning of this year.
It was doing this a few months ago and after researching on Prime I concluded it was either the ignition switch or the main relay. I replaced the main relay and ignition switch. After that the problem went away and the car worked great for the last two months (drove it almost every day to work).
The only "change" that happened right before the problem started again was I got on the throttle a little hard and then the alternator started to make a whirring noise and a relay on the driver's side was clicking rapidly when I pressed on the throttle (at any speed/rpm). I removed the alternator belt to confirm that was the problem and put the belt back on and the whirring went away and the relay stopped clicking. I tested the alternator output and it is still 14V or so.
At this point I have checked the fuse boxes for loose or damaged fuses/wiring and specifically those mentioned to be possible culprits for this issue (fuse 4 and 12). The battery connections are good and solid. I ran the engine and wiggled the wires leading to the ignition switch, main relay, other relays, fuse boxes and anything else that I could think of and wasn't able to reproduce the issue.
I'm not sure if there is something else that I haven't considered. Any suggestions on what to look at next would be greatly appreciated.
Thanks,
-e
I have tried to pull the codes but there are none (using code reader as well as using the service connector)
For some back ground information the car is a 97, 6spd with just under 100K Kms. The only mod to the electronics is a USA Spec adapter. No engine mods just comptech headers and AP-X exhaust. The only other major change is the EPS rack was swapped for a manual rack. Prior to this issue, last year I replaced the starter (due to a click no start issue) and the battery (due to age). After those replacements the car ran fine until the beginning of this year.
It was doing this a few months ago and after researching on Prime I concluded it was either the ignition switch or the main relay. I replaced the main relay and ignition switch. After that the problem went away and the car worked great for the last two months (drove it almost every day to work).
The only "change" that happened right before the problem started again was I got on the throttle a little hard and then the alternator started to make a whirring noise and a relay on the driver's side was clicking rapidly when I pressed on the throttle (at any speed/rpm). I removed the alternator belt to confirm that was the problem and put the belt back on and the whirring went away and the relay stopped clicking. I tested the alternator output and it is still 14V or so.
At this point I have checked the fuse boxes for loose or damaged fuses/wiring and specifically those mentioned to be possible culprits for this issue (fuse 4 and 12). The battery connections are good and solid. I ran the engine and wiggled the wires leading to the ignition switch, main relay, other relays, fuse boxes and anything else that I could think of and wasn't able to reproduce the issue.
I'm not sure if there is something else that I haven't considered. Any suggestions on what to look at next would be greatly appreciated.
Thanks,
-e