Santa FE SM (2001-06) :: Open Loop Due To Insufficient Coolant Temps / No Power On Acceleration
Mar 19, 2016
2001 Santa Fe, 2.4L DOHC engine, 129,000 miles
I bought the vehicle knowing that it was not running well. It idled quite smoothly but had no power on acceleration but was able drive it home at ~30mph. Never had a timing belt change so I foolishly fixed that before I solved the low power problem. Timing belt change went OK and then I discovered the exhaust manifold was cracked - HUGE crack. Fixed that and installed new cat at the same time. Checked compression and read consistent 127-129 across 4 cylinders. Also installed new before and after O2 sensors at this time. Started her up and sounds good, idles smooth. Hooked the scanner up and read P0115 (something about engine coolant temperature circuit), so I cleared it thinking it must have overheated in the past and that is how the E-manifold cracked.
P0115 never returned.
I have no codes showing now however it appears to be running in open loop and scanner shows "open loop due to insufficient engine temperature" but engine temperature is reading 200 deg F. Also the O2 sensors are not being read, see attached readout.
At this point I am stumped and am thinking I need to check fuel pressure or maybe injectors are clogged. But why would it be running in open loop?
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2001 2.4 L AWD Manual Transmission.
Live data readings from vehicle continuously indicates "open loop- driving" for the Fuel System Status (Fuel System 1) . During idle and on open high way driving as 120 km for 10 minutes. I use an ELM327 diagnostic device with ScanMaster-EL 2.2 software.
After establishing this initially I disconnected the battery to do a complete ECU reset. I do not get error codes.
O2 Sensor1 Bank1 constantly reported as 1.275 V and sensor 2 as 0.02 V. I believe however the constant readings are as as a result of being in open loop.
No error codes reported.
The software report OBD1 ability on the diagnostic link.
During driving I got the following readings:
Fuel System 1: open loop-driving
Fuel System 2: not supported.
Calculated load: 6.27 to 83.14, avg 40.6
Fuel trims: 0
RPM: 1008 to 3988, avg 2407
Speed (km/h): 0 to 122, avg 77.66.
Timing Advance #1 degrees: 7 to 44 degrees, avg 22.42
Intake Air Temp (degrees C). 19 to 24
Air Flow Rate - (g/s): 3.18 to 69.27, avg 25.46
The software reports that the O2 Sensor bank 2 is not supported. I am not certain whether I should trust the software. In South Africa cats are not mandatory, hence is it possible explanation.
2) Is it possible to send a command on OBD to force closed loop?
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EGR insufficient flow. EGR valve was pretty bad looking seemed a bit sticky when opened so I replaced it along with gasket. Reset the computer but check engine light came back on code p0401 again. I know you can test by pinching the yellow striped hose at the throttle body to see if the solenoid is bad. The engine will stumble a bit when you pinch it closed, or so I am told. However when I pinch the hose, nothing happens. I do notice that the car does idle kind of roughly.
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I am having a crank and no start issue for a while now In Cold Temps -20 Celsius Or Colder... dealership checked fuses and relays they came back fine. there was an active CEL code for Low System Voltage would that have something to do with my problem here, and what else could be the problem? this has happened in the past after short 2 min drive and go in the store and come back out from being in the store for a few mins, eventually it does turn over but not without alot of cranking and curse words, until now I just found out after a longer 20 min trip it did it again, telling me its getting worse. 2006 Hyundai Santa Fe / 205,000 kms....
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I have a new(and flushed) oil cooler and new thermostat and my coolant and oil temps never go above 190. They are always within 3 degrees at most but is this actually losing fuel mileage? I thought these were good numbers, could be wrong though.
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I am looking for some insight on an issue before I lose sleep over head gaskets. Headed out today in the truck, and no heat whatsoever. Im thinking maybe a vacuum issue, but 4wd (esof) and all vents move just fine. About 10 miles in I over heated at 236 ect. After cracking the coolant cap there was no coolant. I havent actively monitored it but last i checked was fine.
The exhaust does not smell sweet and I see no puddles or any evidence of coolant splatter before today when i refilled it today. There was some tonight but im thinking that's from me spilling some today. Egr is also blocked off. I need the truck soon for plowing so need this resolved asap.
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New 6.0 owner having some issues. I have read just about everything I can find on the ECT/EOT problem.
208K on it, its been studded, running a full banks system. Factory size tires. Since buying it I have drained and flushed with distilled 4 times before new ELC coolant (system looks very clean, no debris found at all), T6 oil change and cleaned the air filter.
I am having a large delta on ECT and EOT. Here's some data from today's run. There is a lot of it. Readings from every minute.
Ambient Temp 118 today, took it for a run up the highway cruised north at 65 mph and back south at 75mph. I was driving on Saturday at 75mph and got the wrench light for excessive delta with 232 degree EOT.
45mph on the way to the Freeway- ECT 195.8, EOT 213.5
65mph after accelerating lightly- ECT 197.6, EOT 216.4
10 miles later, flat 65mph cruise set, it maintained a reasonable temp hold and reached max of ECT 199.4, EOT 218.7
After 2 minutes of coasting down off-ramp and sitting at a light- ECT 195.8, EOT 213.5
after reaching 75MPH moderately- ECT 201.2, EOT 216.5
1 mile later, holding 75mph- ECT 204.8, EOT 220.2
2 miles at 75mph- ECT 204.8, EOT 224.6
3 miles at 75mph- ECT 204.8, EOT 225.2
4 miles at 75mph- ECT 204.8, EOT 226.4
5 miles at 75mph- ECT 204.8, EOT 227.3
6 miles at 75mph- ECT 204.8, EOT 228.2
7 miles at 75mph- ECT 206.6, EOT 228.5
8 miles at 75mph - ECT 208.4, EOT 231.0
At this point I dropped cruised and coasted to the next exit, a mile down.
After coasting to exit and sitting for a minute- ECT 201.2, EOT 221.0
After a mile at 45mph- ECT 203.0, EOT 221.6
2 miles at 45mph, lightly on throttle- ECT 204.8, EOT 221.0
After idling stopped for a few minutes- ECT 195.8, EOT 213.8
Driving again lightly at 45mph- ECT 203.0, EOT 211.5
Am I just ignoring the obvious oil cooler issue or is this a water pump, etc? I changed out the thermostat again for another motorcraft unit after Saturdays hot run. I swear it did not run this hot when I got it... but I question if they were running nearly 100% water in the system. What EGR cooler there is, if there is a way to tell without disassembly?
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It's been pretty smooth sailing since I installed my BPD oil cooler a couple months ago, oil temps are great now. However, in the last month or so, since the outside temps have gotten hot, I'm noticing that my coolant temps seem to be a little higher than they should. I put a new Ford thermostat in it back in the fall when I flushed the coolant system and refilled with EC1 coolant. The temps I'm seeing range from 206 up to 222 and I have seen as high as 230 when I was going up a long grade on a hot day. This is not towing.
The fan does kick on like it should, or at least I think its working properly. When the temp gets to 210-212 I can hear the fan a little, when the temp gets to 219 I can really hear the fan. It usually cools it back down pretty quick unless I'm headed up a long grade. Am I wrong in thinking these temps are too high for a 192 degree stat? My worst fear of course is head gaskets even though I don't have any other HG symptoms. No coolant loss, no puking. What other things should I check first? A new thermostat would be easy enough but I don't know if that would be the issue or not.
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I have a 2007 F250 with the 6.0. Towing up a long hill my truck went into limp mode. I didn't have gauges at the time so I didn't know what my temps were. I now have gauges. I know that the coolant and Oil temps should not be more than 10-15* apart, but what is the max temp that oil should EVER get towing up a steep and long hill? Also, what is the max temp that coolant should EVER get towing up a steep and long hill?
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Took a trip today that was 3 hours there and 3 hours back. Truck ran normal on the way there (eot about 202 and ect about 196-198), but on the way back truck ran a little hotter than normal (ect as high as 214 eot stayed within 2-3* plus or minus ect). Fan did kick on every time I hit ect of 212 and would drop it down to 196-198 and oil temp would drop at the same rate.
Truck is stock 190k miles with a bulletproof egr cooler and coolant filter. Oil cooler probably has about 20k on it. (4th one on this truck- since I like changing them out as much as the rest of us). I checked coolant level when I got home and I might've added a pint to get to bottom of sticker. I'm not sure it wasn't a pint low when I did last flush and cooler replacement.
No puking and I can't find any leaks. I pulled egr valve and no moisture in manifold just a worm out o ring that'll I'll replace. I can't find any leaks. Where to check that I haven't? I don't feel like I'm losing coolant because I wasn't really low. My fan never failed to kick on when I hit 212 or stopped at a red light. No moisture in manifold so I'm not thinking losing coolant due to head gasket. Maybe radiator looks ok but tomorrow I will blow out any bugs to make sure.
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I'm trying to chase down a couple of issues and I need to be able to monitor the coolant (and oil) temps. I've downloaded the manual and the specific 6.0 X Gauge commands but don't see the coolant temps listed.
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We have a 2002 Sante Fe with v6 and 270,000 km on it. Just had extreme loss of power and jerky acceleration from a stop. This has happened a few times in the past year and each time with a 1/4 tank of fuel? We pulled into a gas station, filled it up and away we go like nothing was wrong?
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Check engine light with code 0125. This code indicates low coolant temp for closed loop fuel control. Well I have changed the thermostat, engine temp sensor and new coolant. After driving approx. 5 miles the light came on again.
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Just over 2000 miles on trex and i just got an "insufficient coolant" warning light this evening. the car had been idle for 2 days or so (i.e. cold start) and the warning light came on. I was running a short errand -- and when i re-started the car to come home, the warning did not come up. A couple of questions...
1) I checked the floor of my garage; I'm not leaking fluid. how could this have happened?
2) If the light didn't come on during the return trip, is everything ok?
3) Checking the manual, it says that i must use a specific type of coolant if I'm going to top it off myself --
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The wife and I bought a 2014 Santa Fe 2.4 FWD back in August and so far we are pretty happy with it. A few issues have come up in the first couple months of ownership.
1) The dreaded squeak from the rear passenger side started a couple months ago. I’m going to try the easy fixes first (adjusting the tailgate stops, etc) then take it to the dealership if that doesn't work. I hope they don’t have to do the spot weld fix but if that’s what it is, oh well.
2) Another issue that just came up as of recently is that it’s leaking coolant out of some strange fitting on the front o
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My 2002 Santa Fe Back Hatch Door will not open. I have removed the inside panel & all the linkage seems to work OK. But the main latch will not let go & I cannot see where to trip it. How I can get it opened, just can't see where to trip it but believe it can be done from inside.
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It'll do okay when I am not flooring it, but when I do floor it there's a pretty noticeable lag and then VROM it'll take off like a bullet... This car has a manually operated throttle control, are there any adjustments I can make to make the truck more responsive? 2.4L 4Cyl....
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My 2006 santa fe diesel 2.2 has started to be be a bit smokey when accelerating not even hard had the egr valve off today and gave it a good clean still the same it's not really bad but can see when moving off from parked...
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After buying and installing the low temp thermostat, fan switch and green top sensor, I'm still encountering boiling in the line and a temp of 3/4 of the way when at idle. My coolant mixture is about 70/30 and unfortunately I had to use a temporary fix of the prestone universal coolant mix due to the dealer being closed and I didn't want to add more water
What would be the disadvantages of running straight g12 coolant? My issue is boiling and I figure the more coolant and less water, the less chance of boiling to occur.
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I was getting something from the Santa Fe last night and noticed that the interior lights didn't come on when I opened the door. Further investigation found that they don't illuminate with any of the four doors (despite the door ajar light coming on in the dash), but the lights do come on when set to "ON", so the bulbs and fuse(s) are fine. The model year is 2001.
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2002 Santa Fe 2.7L AWD automatic
She was on the highway this afternoon and was accelerating to merge in with traffic. Apparently the car just reved up without actually accelerating. She said it felt like she was in neutral. I've driven the car a few times over the last week and it has been running perfectly - No hesitation anywhere at any speed. There are no CELs (yet). It is probably worth mentioning that it has been raining HEAVILY here for the last 24-hours and I would not be the least bit surprised if she hit a few puddles on the way. I can just about guarantee the CPS has never been changed and am suspecting it may be a short in causing her problem.
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