Replacing Injector seals - any online guides links?

[Mr2Owner]

I'm planning on changing these, just wondering if anyone here would happen to know of a handy How To guide or such like to help me through it. I'm fairly sure I'll manage but a guide would be good.

[Mr2Owner]

I answered my own question, I found a guide.
Here's the link if anyone else need sit, its for a Rev1 but is probably the same apart from the cold start setup.

http://www.lovehorsepower.com/MR2_Docs/ ... ectors.htm

[MartinF]

They're not that hard to do.

Out of interest why are you replacing them ?

[Mr2Owner]

They're not that hard to do.

Out of interest why are you replacing them ?

To rule them out of my emissions problem, in case 1 or more of them is leaking contributing to my emissions issue. They're probably ok but I already have the new seals so might as well fit them.

[markstevieandmads]

Not entirely sure what u are doing?

U dont seem to want to listen to anyone. Why are you now changing injector seals? You have an intermittent emmision problem and you have proved its not the lamda sensor so next step is to prove the lamda wiring....you havent done this but jumped on something else. Proving the wiring will not cost a penny, changing the seals will. 🙄

[Mr2Owner]

Not entirely sure what u are doing?

U dont seem to want to listen to anyone. Why are you now changing injector seals? You have an intermittent emmision problem and you have proved its not the lamda sensor so next step is to prove the lamda wiring....you havent done this but jumped on something else. Proving the wiring will not cost a penny, changing the seals will. 🙄

Someone else had suggested to change the injector o-rings before in my other thread and it had fixed their particular emissions issue. I purchased these o-rings and seals already but never got round to fitting them as was checking cats, leaks, etc..

Seen as I already have them I was thinking I'd fit them anyway and eliminate another possible thing at the same time.

I will still try and find an auto electrician to check for an intermittent wiring fault on the lambda wiring to the Ecu for me, I'm not 100% sure how to test this and finding an auto electrician doesn't seem easy around my parts. I have asked how to check this Lambda sensor and wiring but people are posting conflicting info and beating around the bush on how they actually tested it, the latest poster in my other thread is saying you don't test for oscillations via the VF1 terminal as Toyota state but use the OX1 terminal, it's hard to know what to believe or test.

If you can answer my questions on checking the Lambda sensor in my other thread please feel free as no one else seems to have completed the Toyota test successfully.

I've been reading up on testing the Lambda sensor and what I'm confident I can check on it is:
- continuity / resistance between the 2 heater element wires
- 12v to 1 of the heater element wires with ignition on

Regards the oscillations needle test I need help with, preferrably from an auto electrician who can tell me if its intermittent and help me find the damaged wiring or Ecu connection, etc..

[Nic]

Have you read the "Oxygen Sensor Inspection" flow chart in the workshop manual? It goes through the testing procedure step by step.

[Mr2Owner]

Have you read the "Oxygen Sensor Inspection" flow chart in the workshop manual? It goes through the testing procedure step by step.

Yes, I've read it and tried it, and read it again and tried it again and again. At no stage do I ever get the analogue needle to oscillate. So assuming I am following the test procedure correctly (its a little unclear in 1 or 2 of the steps) my lambda sensor isn't oscillating.

But the car has passed a mechanics emissions tester twice with 2 different Lambda sensors fitted. So, if I managed to test it correctly and there genuinely were no oscillations present when I tested then it would appear there is a intermittent problem regarding the wiring to the Lambda sensor or with the Ecu?

I don't know how to test the Ecu or the lambda wiring from here on. I think its going to be awkward to trace the wiring back to the Ecu.

[Mr2Owner]

I tested the Lambda sensor now regards the following tests:

- Continuity between the 2 black heater element wires on the sensor itself = Have continuity and 05.5ohms

- 12v at the heater wire on the car loom side with key on = Have 12v at this black wire.