Suzuki Forums banner

1 - 6 of 6 Posts

·
Registered
Joined
·
7 Posts
Discussion Starter · #1 ·
1.6L, 2006 Grand Vitara with only 81,000 is having mechanical fault where the engine will simply shut down and go into a "Limp Mode." Loses all power and will not go above 2K revs. Happens at random after about 15 minutes of driving. No engine light comes on and car has just been serviced professionally. Oil is full and mechanic has said that the computer is not showing any history of faults or engine problems. Mechanic referred to the issue as the car "retarding" itself but the reason is unknown. Fan belt is squeaky occasionally but apart from that, engine has been flawless and maintained properly.

Any suggestions on the cause of the problem or how to stop it would be greatly appreciated.
 

·
Super Moderator
Joined
·
15,399 Posts
If it's actually going into a "limp mode" there will be a code - limp mode is a state that the engine management system enables as a "get you home" when the alternative would be to leave you stranded on the side road.

Let's start with the basics - does the check engine light work? It should turn on during the lamp test when the ignition is first switched on, and go off after the engine is started - if yours doesn't do that, you need to determine why and fix it.

Next - fuel filter - has it ever been changed?
 

·
Registered
Joined
·
29 Posts
I have the same engine and had a spark issue a while back. It didn't trigger the check engine light. It was inconsistent and getting worse. Symptoms were a sudden loss of power (forward momentum) that didn't kill the engine but the revs would dip really quickly. Turned out it was the spark wire leads on top of the engine, one of them had cracked insulation and would sporadically short itself with the valve cover. It's 2 wires hidden under a cover on top of the engine. Changed them and purring like an aged kitten since then.
 

·
Registered
Joined
·
7 Posts
Discussion Starter · #4 ·
If it's actually going into a "limp mode" there will be a code - limp mode is a state that the engine management system enables as a "get you home" when the alternative would be to leave you stranded on the side road.

Let's start with the basics - does the check engine light work? It should turn on during the lamp test when the ignition is first switched on, and go off after the engine is started - if yours doesn't do that, you need to determine why and fix it.

Next - fuel filter - has it ever been changed?
Engine light works yes. Fuel filter has been changed regularly with services and have just had a 75,000km log book service done as well.
Nothing was showing on the computer history as a fault but to be sure we changed the engine scanner / sensor.

Thank you for your help. More than happy to try any other suggestions!
 

·
Registered
Joined
·
7 Posts
Discussion Starter · #5 ·
I have the same engine and had a spark issue a while back. It didn't trigger the check engine light. It was inconsistent and getting worse. Symptoms were a sudden loss of power (forward momentum) that didn't kill the engine but the revs would dip really quickly. Turned out it was the spark wire leads on top of the engine, one of them had cracked insulation and would sporadically short itself with the valve cover. It's 2 wires hidden under a cover on top of the engine. Changed them and purring like an aged kitten since then.
This sounds very similar to my issue. Will definitely check this out thankyou!!
 

·
Super Moderator
Joined
·
15,399 Posts
Engine light works yes. Fuel filter has been changed regularly with services and have just had a 75,000km log book service done as well.
Nothing was showing on the computer history as a fault but to be sure we changed the engine scanner / sensor.

Thank you for your help. More than happy to try any other suggestions!
I really hate to say this, but somebody is either being misleading, or has been misled.

Fuel filter on that car is internal to the tank and not an item that would be changed in a regular service, so if your mechanic says he's been doing it every service, then he's been ripping you off - that's number one, number two, there is no single engine scanner/sensor that you could/would replace "to be sure", there are at least six or more sensors related to the engine alone.

Maybe it's time to find a good/better mechanic.
 
1 - 6 of 6 Posts
Top