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Old 08-03-2019, 06:58 AM   #1 (permalink)
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Good day, I have a Suzuki escudo 1996, V6, 2.0. Currently it's starting fine but cuts after 4 seconds. The computer has been changed, the wire harnesses has been changed, the throttle body has been changed, fuel tank changed, plugs changed, camshaft position sensor changed, coils changed, relays has been checked. The only thing that have not been changed is the fact that it still does not stay idling. Any expert that has a different view out there your help will be greatly appreciated.
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Old 08-03-2019, 08:12 AM   #2 (permalink)
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Is this a cold start issue, a warm start issue, an intermittent issue or a persistent problem?

Will it stay running if you crack the throttle open? Do you have spark at the plugs after it cuts out? Will it stay running if you spray starting fluid into the intake?

Have any sort of diagnostics been done? Are there any ECU codes? What was the reason the various parts were replaced? Were the replacements new or used? If used were they known to be in good working order? If new were they genuine OEM or aftermarket? Did the symptoms change when the parts were replaced? Why was the harness changed? Which harness was changed?

Was any attempt made to correctly set the cold idle & IAC valve duty cycle - if not, why not?

I'm especially curious as to the reason for the part replacement and the sequence, since the one part I would have considered as a primary suspect (the IAC valve) has not been listed as replaced.

No - I don't consider myself an expert, but I would like to think I'm more familiar with the H20a than most folks
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Old 08-03-2019, 09:21 AM   #3 (permalink)
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Several so called mechanics have past on it, each would give a different diagnose, hence the reason why all those parts were changed. I'm no pro at this but I'm tired of being made spend money and the same problem still exist. I will look up the IAC value you mentioned and will get back to you.
Thanks
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Old 08-03-2019, 09:28 AM   #4 (permalink)
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Being mindful that this a 2.0v6, does it carry a IAC value?
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Old 08-03-2019, 12:17 PM   #5 (permalink)
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If what you're looking for is assistance/guidance, you're going about it the wrong way - the reason for the questions is to get a better picture of what is going on - the answers guide the diagnosis, and you've answered none of them.

The idle speed on the vast majority of fuel injected engines is controlled by a device that allows a limited volume of air to bypass the throttle plate, this device is known by different names, with IAC (Idle Air Control) valve and ISC (Idle Speed Control) valve being the most common - on the H20a & H25a engines, Suzuki calls it an IAC valve, on the H27a, it's called an ISC valve - so yes, your 2.0 V6 does have an IAC valve.

Are you seriously telling me that someone diagnosed the fuel tank as the reason the engine cuts out after running for four seconds???

Something tells me I'm not getting the full story here.
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Old 08-03-2019, 12:34 PM   #6 (permalink)
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The system were corroded since the jeep had been sitting there for a while. The vehicle was parked in a garage from since 2005. After starting, it drove for a short while and it has not held the idle since. They've been trying to rule out everything that could have caused the problem but none worked so far. That's why I'm asking around for advice. I love this suzuki, it takes you where others can't go.
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Old 08-03-2019, 12:36 PM   #7 (permalink)
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I also checked the IAC value, i cleaned it with electric cleaner. The problem continues
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Old 08-03-2019, 02:29 PM   #8 (permalink)
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Quote:
Originally Posted by [email protected] View Post
The system were corroded since the jeep had been sitting there for a while. The vehicle was parked in a garage from since 2005. After starting, it drove for a short while and it has not held the idle since. They've been trying to rule out everything that could have caused the problem but none worked so far. That's why I'm asking around for advice. I love this suzuki, it takes you where others can't go.
ahhhh....finally, a useful bit of information!!!


just starting a car and driving it thats been sitting for the better part of 14 years is just asking for trouble. Did anybody flush all the fuel lines / injector supply rails etc? BEFORE starting it? Change the oil and filter? check for sticking valves and corrosion in the cylinders?

What does it run like when you get it running? or will it not stay running?

we need answers to the questions we are asking otherwise we can't help you.
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Old 08-03-2019, 02:38 PM   #9 (permalink)
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I bought the vehicle because the body was in such good shape. But they had done so much on it before i bought it. They changed the tank and cleaned the injectors after they started it. I have checked the lines and there is good pressure with fuel coming through. We checked the plugs, all are getting power. After starting it today, I realized that rpm would fluctuate before the check light comes on and shuts off.
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Old 08-03-2019, 02:44 PM   #10 (permalink)
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I also did a manual scan and the check light blinked 2 and 4, I take it that's it's code 24
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