Last post on Oct 21, 2012 at 2:41 PM
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Hyundai Santa Fe, Electrical, SUV
#17 of 26 03 Santa Fe "Will not communicate" code on scan tool
Nov 22, 2011 (4:13 pm)
My 03 Santa Fe has been very well maintained, has a new battery and full tank of gas. Driving out of my neighborhood two days ago the engine died and would not restart. When I turned the key to start it I can hear the fuel pump priming and there is plenty of battery power to crank the engine, but it wont take a spark. Had vehicle towed to mechanic and he hooked it up to scanner and the code read "will not communicate" Does this code indicate a bad ECM or some other computer related problem? If it is a bad ECM, how costly and difficult is that repair? Any thoughts or suggestions would be much appreciated. Thank you.
#18 of 26 Re: 2010 intermittently won't start [empowernv]
Nov 28, 2011 (5:02 pm)
Alternator, according to dealer
#20 of 26 Hyundai Santa Fe difficulty starting in morning
Dec 29, 2011 (8:17 am)
My '08 2.7 has difficuly starting in the morning. It makes the normal cranking noises but won't fire up immediatly. I typically let it try to catch for 5-10 seconds, pause, and try again. Then I wait a minute, try again, and everything starts fine. Then it'll start normally the rest of the day.
Pardon my ignorance, but isn't there some sort of compartment that holds fuel into the engine with a check valve that keeps it from releasing back into the tank? Could it be that this valve is leaking?
Or does it sound like I need a whole new fuel pump?
Any help would be very much appreciated.
#21 of 26 Squeal, Stop, and Smoke
Jan 07, 2012 (2:25 pm)
On Jan. 4th, my Santa Fe 2002 was driving along fine and all of a sudden it started squealing and completely shut off...It started right back up and began to squeal even louder and then I smelled something burning and saw smoke...I happen to be next to a large parking lot... I immediately drove it into a parking spot and turned it off...Had it towed home dreading that this must be an expensive fix...Any ideas as to what this could be??? Engine light never came on...Working overtime now trying to get cash together before I take it to the dealer(dealer maintained since 2002)...Thanks
#22 of 26 Re: Squeal, Stop, and Smoke [citycash227]
Jan 07, 2012 (7:04 pm)
Hard to say - maybe just the serpentine belt needs to be replaced?
#23 of 26 '03 Santa Fe starting issues.
Apr 15, 2012 (9:13 pm)
My 2003 Hyundai Santa Fe has issues starting every time you attempt to start the vehicle, the motor turns over but does not crank, you have to try at least 3 times EVERYTIME. It normally cranks on the 3rd time. I have replaced the plugs and plug wires but that had no effect. This has been an on going issues since I purchased the vehicle used about 3 years ago. It has progressively gotten worse. Recently I have noticed that the headlight, taillight and seat warmer are all out on the driver side and the radio cuts off at random while going down the road. Any suggestions?
#25 of 26 Rough Idle on 2003 Hyundai Santa Fe 2wd 3.5L V6
Aug 17, 2012 (4:57 pm)
Purchased a 2003 Hyundai Santa Fe with 149k miles on it a couple of months ago. Work we did to it includes:
* Replaced most of the filters, hoses and belts (including timing belt)
* Replaced spark plugs, cables, and 2 of the 3 ignition coils
* Degreased the engine
After that, when not moving (such as a red light), the engine would rev up and then slow down and/or stall. That lasted for about 100 miles, and then stopped.
Note1: The spark plugs were AutoLite Double Platinum, not NGK.
Note2: The fuel gauge was wrong the first time we filled the vehicle up. After letting it run out of gas and then filling it up again, the fuel gauge started working - so we never checked the condition of the fuel pump.
Since the rev/stall problem stopped, the vehicle has had a really rough idle and is consistently getting under 15MPG on the freeway, 12 city (EPA rated at 19 FWY, 15 city)
We've heard the following theories raised:
1. Got water on the spark plugs when degreasing
2. Throttle Body is bad
3. Should have used NGK Iridium spark plugs (note: OEM was double platinum)
4. Common problem with that vehicle - no way to repair it
Do any of these theories make sense? Any other ideas as to the problem? Before we spend 1/2 a day taking the car apart again, I'm hoping to get an idea of what to look for... especially if the rough idle problem is really just a "feature" of the vehicle.
Thanks a lot for your help!!!
#26 of 26 Re: Rough Idle on 2003 Hyundai Santa Fe 2wd 3.5L V6 [atreides096]
Oct 21, 2012 (2:41 pm)
have u tried the mass air flow sensor , the throttle body . the oxygen sensor on my there are 2 oxygen sensors it a 2003 4cylinder manual transmision.....take it to a shop they have to know what is wrong with it if they cant fix it sue hyundai for ur money back ....