Please help! SMOKE out the exhaust!

I usually leave it off for at least a couple of minutes but I doubt it matters, here's a link with some info for you...

Toyota 4Runner O/D Off Light Flashing

Nice! It's just like my service manual but in English.

I got bored last night and pulled the 15A EFI fuse and the light came back on.

I bought the jumper for 3 dollars last night and I'm going to try and figure out what code is listed.

Ok so here's the deal I got a smog check today and failed again.... Bah! I have changed the 02 sensor The catback is a magnaflo high flo cat 2 chamber flowmaster muffler and of course downey offroad long tube headers. Don't trip 50 state legal long tube headers and I have passed with those headers on the past couple of years.

Ok so this is how it went down. I had a smog test only performed a month or so ago. It was going to fail so I changed a few things out O2 sensor cat and muffler. I took it back today he said it would fail again but I needed a read out or we are shooting into the dark.

So we perform the test the results are as follows: There were 2 tests performed.

TEST 1 TIME 1:01 PM

The HC(ppm) failed
M1 15MPH: Max 118 GP 305 MEAS 121
M2 25MPH: Max 98 GP 255 MEAS 45

The CO(%) passed
M1 15MPH: Max 0.68 GP 1.98 MEAS 0.10
M2 25MPH: Max 0.87 GP 2.17 MEAS 0.02

The NO(ppm) failed
M1 15MPH: Max 999 GP 1776 MEAS 1847
M2 25MPH: Max 859 GP 1576 MEAS 1521

RESULT GP FAIL

TEST 2 TIME 4:40

HC(ppm) Fail
M1: 15 MPH MEAS 124
M2: 25 MPH MEAS 53

CO(%) Pass
M1: 15 MPH MEAS 0.12
M2: 25 MPH MEAS 0.01

NO(ppm) Fail
M1: 15 MPH MEAS 1716
M2: 25 MPH MEAS 1536

RESULT FAIL FAIL

Sorry the post is so long... So after the test was done he said it was the CAT, the EGR, the O2 sensor, spark plugs or the timing.

I then told him I changed the cat the 02 sensor the night b4 and the spark plugs are also brand new and gapped @ 31. He checked the EGR and said it was fine. The car passed the "Emission Control Systems Visual Inspection/ Functional Check Results" The only thing that didn't say pass is the "other related emis. components" Modified. "Visual inspection" Tampered. "Functional check" pass "Emissions Test" Fail.

Anyways my cat has a 2" piece of piping and the muffler is attached right after that and the exhaust tip is turned down before the rear axel. Apparently he said that it is too "HOT" so I was wondering if I changed out my Highflo Cat to stock and my Flowmaster 2 chamber muffler to stock and extended the piping to the normal length with dual outlets this time would that give me a shot or am I screwed because it says tampered and modified.

My thoughts are that if you are near an open flame lets say within 3 feet it is pretty darn hot... Now if you back up another 2 feet you aren't quite as hot. The is about 2 feet of piping that was taken out. If I have it put back could that take down the temp. and get me within range of passing?

He tried to tell me to change all this stuff. Then he couldn't tell me what was wrong when I told him that I had already changed it. So then he said it was my exhaust manifolds. He didn't even notice the long tube headers for 3 freaking hours.

I'm not familair with your state's emission readouts the way they list them is different than Texas but I can tell you that NOx is controlled by the EGR and that a couple of things that happen on high mileage Toyotas is that the vacuum switching valve (VSV) gets restricted and the EGR modulator gets plugged up. Both of these items are easy to check.

This part you may not like, I have had Supras with "high flow catalytic converters" that would not pass a sniffer test, we removed the high flow piece and replaced it with a borrowed stock cat and it passed no problem.

Also short the Te and E1 terminals and then check and adjust (if needed) your timing, this is also easy to do and can have a big impact on your readings.

I wouldn't worry about the headers if they've never been a problem before.

How do you check the VSV? How do you short the Te and E1 terminals and then check and adjust (if needed) your timing.

It is a japanese imported motor and it has 59k on it. The car is a 1990 and the motor is a 1994. Can any of these things be a problem?

Well I had all this stuff in mind to fix the smog thing and I checked the Radiator today.... Blown HG again!>..... KILL ME NOW! Could that make it fail smog?

ZephyrZ7 Ok this is my third motor in this car. I have never changed a HG on any of them I just swap out the motor. Only because my last tranny had a problem and it was a motor tranny combo.

If I buy the "Revised" or "Redesigned" HG from toyota is it going to hold up? While I'm in there and I have the heads off is there a company out there that makes aftermarket cams for my 3VZ?

Should I buy a custom set of Metal HGs from this COMETIC company?

Should I just get rid of it and cut my loses?

Should I put a 3.4 5vz?

sorry it took me so long to reply I forgot about you!

I've seen a 5VZ installed in place of the 3VZ but its more work than you think and IMO not worth it, if it were me I'd just get rid of it I know that doesn't sound like I'm much of a tech but in this case the 90-95 4-runners were the second worst vehicle toyota made because of the engines (next to the 87-90 tercels "entire car") the new HGs from toyota do hold up better but imo they just missed on the design from the get go. I'm thinking you might want to get out from under the truck because you already have transmission codes in it as well so the trans might not be far behind from letting go.

I'm not aware of what changes or differences there are between the jap version 3VZ and the US version so I can't help you there.

If you are going to do the HGs then sell it (which I'd do but thats me) the heads normally come off as a pair with the crossover pipe in the back holding them together but in your case since you have the headers it may be easier to just yank whatever side is leaking and fix it. If you do this be sure and go to the dealer and get the small pigtail wire for the knock sensor that is underneath the intake and replace it or else YOU WILL HAVE A CHECK ENGINE LIGHT AFTERWARDS. (they crack and loose connectivity)

I added downey longtube headers once to a 4-runner like yours and to me it seemed easier (faster) to bolt the header on each head then slide it in the engine compartment.

lol yeah I had dropped in the engine and just had it resting on the mounts and realized I forgot to put on the headers so we had to pull it back up a bit and bolt them on. I am plannin on fixing and selling but I'm just to busy to start tearing into that thing at the moment.

I was talking to my uncle and he has a friend that owns a smog shop and he said that he would do all the repairs and not rip me off.

I do have an extra motor and trans in the garage. The motor also has a blown HG. I think that even if I get the car to pass smog after I sell it the new owner has to smog it as well.