Tuesday, February 26, 2008 - 09:30 am, by: Vineet Naidu(Vineetnaidu)
As you know my TT soarer is playing up (my previous posts). It used to just not run properly.Then later would stall at idle or not even able to maintain being at idle.But now does not start.It cranks but doesn't start
We have tested a few things as mentioned on the forums.
Checked spark plugs, ECU, cat (cat light was on),fuel pump.
My question is what provides voltage to the injector plugs as we've tested it by plugging the light(tool for testing these plugs) onto these plugs and the light was very dim. So we suspect that the injectors aren't getting enough current to open up so that's why the car isn't starting.
Friday, February 29, 2008 - 03:23 pm, by: Mustafa Akgul(Muzzy)
most likely cause for ignition failure in a TT could be coils, ign module connectors at the coil or faulty or wrong gaps in plugs.
did you do anything to the car prior to this problem?
the ect light on and od flashing could mean the speedo sensor in the auto box is not working . you must work and eliminate problems in proper order otherwise you will jump from this to that and never find out whats wrong.
Vineet Naidu wrote on Tuesday, February 26, 2008 - 09:30 am:
Friday, February 29, 2008 - 03:39 pm, by: Vineet Naidu(Vineetnaidu)
DID NOT DO ANYTHING(NO TEMPERING) BEFORE THIS PROBLEM OCCURRED.THE CAR WAS RUNNING AS PER NORMAL WITH THE SPEEDO NOT WORKING.IN THE MORNING I STARTED TO GO TO WORK AND THIS PROBLEM OCCURRED INITIALLY IT WAS BLOWING LOTS OF BLACK SMOKE AND RUNNING ROUGH(ASSUMING TOO MUCH FUEL) AND NOW NOT STARTING(ASSUMING NOT ENOUGH FUEL) IN BETWEEN THESE PROBLEM THE CAR RUN PERFECT FOR 2 DAYS. THE CAR RAN PERFECT BEFORE THE SPEEDO DIED.2 WEEKS AFTER SPEEDO DIED THE CAR STARTED RUNNING ROUGH.
WHAT ORDER DO U RECCOMEND TO DIAGNOSE THE PROBLEM.
CAT HAS BEEN CHECKED,FUEL FILTER UNDER CAR HAS BEEN CHECKED,MAP SENSOR HAS BEEN CHECKED.
ANYONE IN CAMPBELLTOWN NSW AREA WILLING TO COME TO MY PLACE AND HAVE A LOOK. WILL BE MUCH APPRECIATED.CALL ME ON 0411468920. IAM WILLING TO PAY SOME MONEY FOR YOUR TIME. AFTER SOMEBODY WHO IS CONFIDENT AND EXPERIENCED WITH SOARERS.
Friday, February 29, 2008 - 04:11 pm, by: Vineet Naidu(Vineetnaidu)
Done the Fuel pump ECU bypass.Checked Spark plugs.It is giving out spark when cranking. My cousin who is checking the car says if it is the spark plug then how would all 6 of them die all together and thus doesn't think its the sparks. We checked one spark plug though to see if it was giving out spark.
Friday, February 29, 2008 - 09:33 pm, by: Vineet Naidu(Vineetnaidu)
Yup i removed the pin as that way the engine stayed on. We thought the pin was just to get the motor started and then it would stay on by itself. However we left the pin on many times to start the car and the car wouldn't start.Thus we could not just pin point the fuel pump ecu as the culprit.
mustafa you anywhere near the campbelltown liverpool area and free to have a quick look at the car.Can anyone recommend a soarer mechanic who is honest and competent to fix this problem.
Saturday, March 01, 2008 - 02:33 am, by: Davin Kemshead(Djdevilishrd)
Have you checked all of your grounds? This is probably the problem, I know that it sounds minor but seriously check EVERY SINGLE GROUND POINT and CLEAN THEM AND RE-ATTACH THEM. Maybe put a BIGGER GROUND WIRE on to replace the main ground. Do you have a large stereo set up that could be effecting the vehicle's GROUND?
Sunday, March 02, 2008 - 08:35 pm, by: Vineet Naidu(Vineetnaidu)
I got another mechanic to check the car.He reckons that the crank angle sensor could be the culprit. We know fuel is coming as the fuel is coming past the filter(under the car).Have bridged the fp and B+ as well.
2-3 of the coil packs are cracked.According to mechanic there maybe no fuel entering due to the ignitors no working so thus the crank angle sensor.
How do I check the crank angle sensor and what do I check for in it. Is there any voltage and anything I gotta check to know if the crank angle sensor is rooted.
It could be the coil pack but I also think if it was the coil pack the car should have started and just not idle properly. But the car only cranks but doesn't start.
Tuesday, March 04, 2008 - 10:28 am, by: Vineet Naidu(Vineetnaidu)
Cleaned the spark plugs yesterday and tried it .The car started immediately.According to the mechanic. The spark plugs were no good,so it got flooded with fuel,then ECU is telling injectors not to open as there is too much fuel and that's why the noide light wasn't going on.You can't rev it hard as it starts shuttering. The cat light is still on.
We suspect NOW fuel pressure reg as maybe it can't control the fuel. See the mechanic says today.Any suggestions.
Thursday, March 06, 2008 - 06:50 am, by: Daniel Clarke(Dieseltrain)
COuld also be the actual ECU for the engine.. They have caps in them that are prone to leaking. Try finding someone near ou that will swap their Ecu in for you and try that!
Someone with a Stock Ecu that is Where bouts do you live?
Thursday, March 06, 2008 - 08:26 am, by: Vineet Naidu(Vineetnaidu)
Daniel Clarke wrote on Thursday, March 06, 2008 - 06:50 am:
COuld also be the actual ECU for the engine.. They have caps in them that are prone to leaking. Try finding someone near ou that will swap their Ecu in for you and try that!
Someone with a Stock Ecu that is Where bouts do you live?
I have tried another stock ECU.DID NOT FIX THE PROBLEM.I am in campbelltown.
I need fuel pressure specifications and coolant temp sensor readings(ohms)at different times like idle,normal temp and such.My mechanic wants to check the coolant temp sensor and fuel pressure regulator so I need these specs.Can anyone please help. i have searched everywhere.
Saturday, February 27, 2010 - 09:38 am, by: Lew Radbourn(Marlew)
Vineet; Check this out you self it is an easy check; If you suspect your fuel reg to be suspect follow the line from the reg to the tank (in the engine bay)it is a rubber hose. Rev the engine until you get your engine to fail as it has been doing now clamp the hose and see if it solves the fault if it does there is the fault. Now when you test the 1jz for over fueling OR under fueling you are going to go through a few sets of spark plugs. The 1jz and 2jz don't like gummed up plugs as thay will make the car run like a bag of crap and you will chase you tail looking for other faults when it is only the plugs. Now If it is a crank sensor failure. that will not allow the car to start at all.But in saying that i have seen it that a wire from the sensor had broken and was just making contact when it felt like it and that made the car break down at any thing above 3000 rpm (not a usual fault) but it could happen and has. Fuel pump.. when it comes to the pump there can be 2 faults low pressure or low flow you must have a pressure and flow tester fitted into the fuel line to check this out or again you will be chasing your tail to find the fault.as i said above clamping the line will up the pressure but will not do any thing about the flow. You have to have both to get the best out of the engine. i think you did mention that your O2 sensor wasn't fitted to the exhaust because it was an aftermarket exhaust . Mate if you are running a stock ECU the o2 sensor is a very important part that has to be fitted and running correctly to help the ECU tune the lower (on 1jz and 2jz engines)rev range and idle settings. I don't want to sound nasty but by the sounds of the problems you have the mechanics you are taking it to have not got a clue what thay are looking for . Mate if it persists take the car down to Neil in canberra he will sort it out. I can't do it for you as i now drive interstate trucks and don't even have the time for my own cars now days.I even had to pay a mate to work on them and that really sucks.the only good thing about it is i get to tell him what the problem is and were to find it. good luck mate. Lew
Sunday, February 28, 2010 - 02:00 am, by: Lew Radbourn(Marlew)
Boris; the stock ecu needs the o2 sensor to work properly as the o2 sensor is actually used to run the engine at below 2500rpm (i think that is the correct rpm)
Clamping the fuel line (as a test only) If you fuel reg is open you will not have any pressure in the fuel rail. by clamping the fuel line (again as a test only)you will notice a rise in revs and the car will idle properly (until there is to much pressure and it will over fuel) The best way is to place a pressure and flow fuel tester in the fuel feed line that way you will see what pressure and flow you have. If the car wont idle or is just running then clamp the line and it will up the pressure
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Where bouts do you live?
