SCFlex

Newbie, here, not too mechanically savvy, but like to try DIY. SC300 1993, some days (for days) it's runs perfectly/floats but I do periodically get the chocking and turning off. I haven't checked or noticed the rpm's. Yesterday it did not pass smog due to the timing. Smog guy said it would pass if I could just adjust timing. Was just told to have timing adjusted to 10 degrees, but best guy could get it was 13 w/out taking more time and getting in there to completely turn it. He also said if he got it to 10, I would lose power and that I do need to have the TPS checked. Don't quite understand what TPS is/does, but was also told that maybe Toyota/Lexus may fix/replace TPS for free (anyone know this to be true) as this is a recurring problem w/this car. Think I can find a TPS used, jk yard maybe? With these issues, wondering if car is on last leg..256000miles, not sure how much $ needs to be spent to get it healthy and passing smog. Any thoughts, on cost..will check out/replace sparks today. OR, seriously considering retiring car to the gov $1k program. Thoughts? Know any reasonably priced guys that can/would check it out4 me? In LA.Hollywood. Also, got hit last Oct. if I keep it, need a passenger door, shell.-Appreciate any thoughts, help..saw the other posting for "rough idle, turning off" will look into those replys..thanks guys