I'm pretty sure the cold start valve is only to help the car start when its cold. Its not for warm-up enrichment. The car will actually start with out the cold start valve, you'll just have to crank it for a while. Might want to find out what code 46 is (I have trouble believing the computer would know if the cold start valve was working or not)

 

yeah, i just dont have a clue what a code 46 is.

 

where do i go to find out the codes?

 

Well, code 4 is coolant temp sensor, and code 6 is RPM signal... Code 6 seems like it would be disasterous to running the car, but code 4 may cause the car to run poorly for the first minute or two of operation. I'd check your coolant temp sensor.

 

hey how come this one mechanic said all codes on toyotas are double #s and not singles?

 

Cause he's an idiot?

FI-20 through FI-23 in the 85 BGB explains the diagnosis codes. Some are two digits, but its read off as a single code, you just count the blinks 1 through 11 (not counting 9). Of course, I'm basing this off an AW11 not an AE86.

 

http://mr2wiki.com/?n=MKI.EngineErrorCodes

 

thanx reno. greatly appreciate it.