The problem with glow plugs

Hello all, my stilo 1.9 MJT 120CV, for about a year, presents problems to the glow plugs preheating, in practice, the continental time ? the problem was have replaced all the glow plugs, but after about 2 days and rispuntata the light, I have to say that in the summer I have no problems but in the winter kind of morning ? hard starting, cos? we have intervened more? deeply and we checked the fuse:OK, the rel?:OK, at the same time? cable:OK;
at this point I would like to understand:

1) With multiecuscan diagnosis I can see what? the problem? I each time I delete the errors, but this promptly returns.

2) If I would check the voltage at the ends of the spark plugs, this is how it must be?

3) Where can I find a diagram with the specifications and the voltages of the various pins of the control unit preheating?

If you want my advice you should contact a car electrician in your area at least to make a diagnosis of pi? in-depth

Clear,
prover? in the week....Thanks

I backgroop for the connectors of the spark plugs, which could be the cause.

Hello to me ? happened the same problem. Replaced the glow plugs (new Bosch), replaced the ecu, plugs (new Fiat) but the problem persisted. In the end I replaced the sensor on the filter mount, diesel, what? the sensor is circular in shape where you screw the filter.
NB with the diagnosis I reported nothing.

Hello,
just yesterday I carried out the verification of the glow plugs, with the substitution of 1 failed.
With the tester I found three to 1.2 ohms and a marked 41ohm, outlet and powered with battery, no sign of life.
Replaced and all ok.

x gcmotor: circular sensor you are referring to, the one under the filter that checks for the presence of water in the oil?

Hello

Quote:

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Originally Written by gcmotor

Hello to me ? happened the same problem. Replaced the glow plugs (new Bosch), replaced the ecu, plugs (new Fiat) but the problem persisted. In the end I replaced the sensor on the filter mount, diesel, what? the sensor is circular in shape where you screw the filter.
NB with the diagnosis I reported nothing.

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Gcmotor you are referring to the heater with diesel mounted on the diesel filter between the filter and the support, but on the stilo 1.9 mjet not ? expected, such as setting up.. ? happened to me as well but on older engines, jtd.. the heater is controlled by the control unit pre-heating..

124alexs
I am glad that you help, and I'm glad that you learned a method to test the glow plugs without disassembly or with rudimentary ways..

if you want we can do a test, then we will disable the request ecu candles from the ecu to the engine. mail file ori.

Thanks Backgroop,
? a practice that use to be a p? I also, I can confirm that you gave a valuable advice, I intervened only in order to strengthen your thesis, and why? gi? the topic was very limited.

Excellent collaboration!

Hi guys,
then I made all the tests, in practice I have tested the ohms of 3 glow plugs , since? in a are not able to get there, and all three gave 0.7, and with the full scale of the tester at 2k, I tried the red positive from 6mmq. and get voltage, continuity? the individual cables are ok, but don't get voltage at the ends of the spark plug to the cio? between the mass and the spark the tension ? 0, now I understand the ecu and glow ? fails or is not given the input from the ecu?
In practice, I feel I take the rel? near the battery, once I had checked also the fuses!
The error in diagnosis ? P0683!
Beautiful forum�

When you measure the resistance of the glow plugs, you need to increase the sensitivity? put the bottom of the scale, 200ohm, 2k ? too.
Check all 4, then if when you turn the framework does not measure voltage on the pin detached from the spark plug to the 99% ? the ecu.

Hello

Sure, the car in question was a Fiat Punto 1.9 jtd

Try to do this steps:1. Turn the key to on and wait until the led light turns off the glow plugs (preheat).

2. Start the car and wait for the deactivation of the control unit, pre-heating (in this stage, the light of the glow plugs ? turned off).

3. The light of the glow plugs (in the presence of the d?anomaly on?system pre-heating starts to flash for the duration of 30 seconds.

4. At the end of this phase, return the key to OFF and repeat?start-up.

5. If at the end of it?activation of the control unit for preheating the lamp of the glow plugs is not blinking ir? (defect no more? this), and delete with Examiner l?error in memory.

Let me know.