Re: The Lone Beech Garage Build Thread (60x46)
Sunday - May 13, 2018
Today a little automotive work in the LBG...
Last night my two children met their mother and I at a restaurant for a Mother's Day celebration. When my son arrived he indicated the 2002 Corolla he drives had stalled on him as he left work to join us. It started right up but then stalled again after a short distance. Again it started up without issue but for some reason he put the 3-speed Automatic Transmission in 2 instead of Drive and drove to the restaurant without further issue.
After we finished our meal, I walked out to the Corolla with him. He needed to return to work to insure the fix for the earlier trouble call had held up. He started the Corolla and put it into Drive. Everything seemed OK and he departed.
When he got home last night he told me the car had done the same thing when he left work the second time. Once again, when he put the Transmission in 2, the car allowed him to complete the 15 minute drive home.
Weird.
We walked out to the shop and got the Autel Scanner hooked up to the Corolla so that we could read the Diagnostic Codes.
There were none.
Weirder.
Spent some time today trying to research this and then my son and I took the Corolla out and tried to replicate the conditions from last night. We drove in our residential area for about 15 minutes without incident. Then we parked it for about 40 minutes and drove it again. [This is how my son remembered the lead up to what happened last night.] Again the car ran without a hitch.
Sigh.
The Interweb seemed to favor the EFI relay or a fuel pump issue for the sudden stall without generating a diagnostic code. The problem going away when driving with the Transmission in 2 appears to be a first for the Internet as I found nothing similar to that.
Ha! I'm inclined to believe that's a red herring but... it did work twice.
We shall see. So what to do in the meantime.
The EFI Relay is located in a plastic box (Driver's Side of the Engine Compartment) with other relays and fuses. The white arrows point to the EFI Relay and the Horn Relay.
Horn Relay?
During my research on the Internet it appeared that the EFI Relay and the Horn Relay were the same Toyota part number (90084-98031). My plan was to swap the two and see what happens.
I "tooted" the horn to make sure it actually functioned and then started working on removing the Horn Relay.
The trick was getting these relays - that had been fastened in their sockets for 16 years - free from their bonds. I had to remove the FAN No. 1 relay to give me enough room to get at the Horn Relay. Eventually, using a "bent" needle nose pliers and working one side then the other - I was able to free the Horn Relay.
I had been unable to see the Horn Relay's Part number until now. I was gratified to find it was indeed the same as the EFI Relay. I tried the horn again and it was now incapacitated.
I went with a Spark Plug Jacket Pliers to remove the EFI Relay. Again a bit of a fight but eventually out she came.
Swapped the Horn & EFI relay positions and reinstalled the FAN relay.
The horn now worked and the car started up.
We'll see what the future holds. If the car stalls again, I think we can eliminate the EFI Relay from the list of suspects.
Scott
Key Words: 2002 Corolla Automatic Transmission 2 stalls no diagnostic codes EFI Relay Horn Relay