I bought my 1994 1fz-fe 80 series a month ago, being to hasty to service it I pulled off the intake boot, changing the airfilter and then cracked it! Then not realising I had cracked it, I drove and it started to die on me, so badly I was towed.
I then found the issue and replaced the boot, in doing so I again was not careful and then pulled off the hose going from the airfilter to the vacuum boost lines, I drove like this for 1 hour and then fixed this issue.
The car is in Cali and was not smogged, it was thowing a CEL for bad O2 sensors, which I replaced with the denso ones https://www.amazon.com/dp/B07WSG3R23?ref_=pe_123509780_1038749300_fed_asin_title, they came with a slighty different wiring harness, so I chopped them to make them fit the original wiring fittings.
It then passed Smog!!
Since then I have had a bad idle and when I accelerate when cold it can be awfuly slugish and feel delayed.When starting the car the idle shoots up to 2000 and then slowly comes down to about 600 where the engine starts to shudder ever so slightly, when put in drive or reverse the rmp then drops to 500 and shudders alot more, however it never stalls.
I have tried to combat this by:
Really appreciate how much of an amazing resource ih8mud has been thank you all in advance for any useful insights.
I then found the issue and replaced the boot, in doing so I again was not careful and then pulled off the hose going from the airfilter to the vacuum boost lines, I drove like this for 1 hour and then fixed this issue.
The car is in Cali and was not smogged, it was thowing a CEL for bad O2 sensors, which I replaced with the denso ones https://www.amazon.com/dp/B07WSG3R23?ref_=pe_123509780_1038749300_fed_asin_title, they came with a slighty different wiring harness, so I chopped them to make them fit the original wiring fittings.
It then passed Smog!!
Since then I have had a bad idle and when I accelerate when cold it can be awfuly slugish and feel delayed.When starting the car the idle shoots up to 2000 and then slowly comes down to about 600 where the engine starts to shudder ever so slightly, when put in drive or reverse the rmp then drops to 500 and shudders alot more, however it never stalls.
I have tried to combat this by:
- Cleaning the MAF
- Cleaning the EGR (it leaks ever so slightly, like 1 drop every 30seconds but the diaphragm seems to work allowing the piston to be pushed in and out)
- Checked and Set the TPS according to the FSM
- Cleaned and Checked the IAC as per FSM
- Changed the distributor cap
- Changed the spark plugs
- Changed the spark cables
- Changed the distributor rotor
- Changed the air filter
- Changed the oil filter
- Changed the oil
- Changed the fuel filter
- Put some injector cleaner in with the Gas
- Visual inspection of the wiring harness next to the egr (looks fine no signs of melting)
- Smoke test (all vacuum lines seem good)
- Test the ECT
- Test the fuel injectors
- Cut open wiring harness next to the egr for a deeper inspection
- Change the fuel pump
- Change the fuel sock
- Change the charcoal filter
Really appreciate how much of an amazing resource ih8mud has been thank you all in advance for any useful insights.