GeeTeeFiveOh
Member
About a week ago I went on a good rip down the highway and had several electrical issues that may seem un-related.
Problem 1: My check engine light came on while driving and the car started running really rich doing steady speed, my wideband was reading out 11:1 AFR. I'm sure it started running in open loop and ignoring the o2 sensors. My wiring was questionable on one o2 sensor as I extended it with some wire and a shoddy soldering job. So I did not panic, figured I needed to redo the o2 sensor wiring properly.
Problem 2: Decided it was time to cut my joy ride short and head home, on the way back my speedometer dropped down to zero and did not come back on for the rest of the trip. My speedo was questionable also as it likes to get stuck at 90km/h when I pass that speed and slow back down. The needle would stay at 90 even though I'm clearly going faster or slower. It always freed itself and started working again. Not this time it was fully dead. Once again not too worried, figured the speedometer in the cluster was toasted. Thought about changing it out before this because of the getting stuck at 90 issue.
Problem 3: When I got home I realized my key fob was no longer working to lock / unlock the doors or trunk. tried the power lock switch inside the car and it too was dead. Checked some other things, stereo dead, dome lights dead and the horn also wouldn't work (I custom made a brush switch to get power to the horn button on my momo wheel so its possible thats the problem for the horn.)
Solution: The wiring did look like shit on the o2 sensor and the connections pulled apart with barely any force. I took my time and re-wired the o2 sensor nicely. Poking around underneath the car I found the speedometer pickup had one broken wire going to the connector on the tranny. I took my time and did a nice job soldering up a connection.
Started looking for blown fuses under the dash and found a burned out 10A fuse. Replaced the fuse and it blew immediately on insertion. Took the battery off, installed another fuse, put battery back on and I heard the fuse blow from outside the car.
Did some research and found the keyless entry module is on that circuit and can cause problems. Fully disconnected the keyless module, replaced the fuse and voila it did not blow this time. I went for a drive and there is no check engine light the car was running beautifully and the speedometer functioned better than ever, still gets snagged at 90 sometimes tho.
I want my keyless entry, power locks and dome lights back. Don't want to buy another module only to find its not the problem and will keep blowing the fuse. What would cause the keyless entry module to blow or could it be something else on the circuit that's currently not operational ( power locks, dome lights or horn)
Sorry for the huge post just wanted to get it all out in sufficient detail. Thanks big time to anyone who can help me with this.
Problem 1: My check engine light came on while driving and the car started running really rich doing steady speed, my wideband was reading out 11:1 AFR. I'm sure it started running in open loop and ignoring the o2 sensors. My wiring was questionable on one o2 sensor as I extended it with some wire and a shoddy soldering job. So I did not panic, figured I needed to redo the o2 sensor wiring properly.
Problem 2: Decided it was time to cut my joy ride short and head home, on the way back my speedometer dropped down to zero and did not come back on for the rest of the trip. My speedo was questionable also as it likes to get stuck at 90km/h when I pass that speed and slow back down. The needle would stay at 90 even though I'm clearly going faster or slower. It always freed itself and started working again. Not this time it was fully dead. Once again not too worried, figured the speedometer in the cluster was toasted. Thought about changing it out before this because of the getting stuck at 90 issue.
Problem 3: When I got home I realized my key fob was no longer working to lock / unlock the doors or trunk. tried the power lock switch inside the car and it too was dead. Checked some other things, stereo dead, dome lights dead and the horn also wouldn't work (I custom made a brush switch to get power to the horn button on my momo wheel so its possible thats the problem for the horn.)
Solution: The wiring did look like shit on the o2 sensor and the connections pulled apart with barely any force. I took my time and re-wired the o2 sensor nicely. Poking around underneath the car I found the speedometer pickup had one broken wire going to the connector on the tranny. I took my time and did a nice job soldering up a connection.
Started looking for blown fuses under the dash and found a burned out 10A fuse. Replaced the fuse and it blew immediately on insertion. Took the battery off, installed another fuse, put battery back on and I heard the fuse blow from outside the car.
Did some research and found the keyless entry module is on that circuit and can cause problems. Fully disconnected the keyless module, replaced the fuse and voila it did not blow this time. I went for a drive and there is no check engine light the car was running beautifully and the speedometer functioned better than ever, still gets snagged at 90 sometimes tho.
I want my keyless entry, power locks and dome lights back. Don't want to buy another module only to find its not the problem and will keep blowing the fuse. What would cause the keyless entry module to blow or could it be something else on the circuit that's currently not operational ( power locks, dome lights or horn)
Sorry for the huge post just wanted to get it all out in sufficient detail. Thanks big time to anyone who can help me with this.