The check engine light came on and started blinking

Tiny
TEA1970
  • MEMBER
  • 1998 FORD EXPLORER
  • 2WD
  • AUTOMATIC
The car acts like its going to stall out. Won't pick up speed easily. The check engine light came on and started blinking. The engine smells like it is burning.
I need my car for work. On average I drive 32 miles one way to work.
I can't afford t I get it overhauled is there something I can do that wont cost more than the car is worth?
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Tuesday, November 25th, 2014 AT 9:48 PM

30 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,699 POSTS
Most importantly, do not drive the car with a Check Engine light flashing. That has the potential to turn a relatively minor problem into an expensive one very quickly.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

When the Engine Computer detects a problem, it sets a diagnostic fault code, and if that problem could adversely affect emissions, it will turn on the Check Engine light. You can get a general idea of the severity of the fault code by how the light acts. If the problem is intermittent and the light goes off while you're driving, that is the least serious type of problem. If the light only goes off after you stop and restart the engine, that's a little more serious. If the problem goes away temporarily but the light is always on anytime the engine is running, that's still more serious.
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Tuesday, November 25th, 2014 AT 10:30 PM
Tiny
ANETTEKING
  • MEMBER
  • 2 POSTS
  • 1998 FORD EXPLORER
  • 99,000 MILES
As long as I keep the reservoir filled, the light won't come on. But if the coolant gets too low, the check engine light comes on. I had a leak in the radiator and fixed it with stop leak, but the reservoir goes low at least once a month, provided that I forget to fill it. Is that supposed to set off the check engine light?
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Wednesday, January 6th, 2021 AT 2:19 PM (Merged)
Tiny
DJCL
  • MECHANIC
  • 767 POSTS
What is the code that you are getting. It could it the engine temp is off.
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Wednesday, January 6th, 2021 AT 2:19 PM (Merged)
Tiny
ANETTEKING
  • MEMBER
  • 2 POSTS
I haven't had a diagnostic run on the car yet so I don't have the code info. I can only tell you what happens when the light comes on, meaning that when I refill it, and get the light turned off, it doesn't come back on again until the coolant runs low like that again. So at this point the diagnostic is probably needed. Thanks.
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Wednesday, January 6th, 2021 AT 2:19 PM (Merged)
Tiny
DJCL
  • MECHANIC
  • 767 POSTS
Good luck
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Wednesday, January 6th, 2021 AT 2:19 PM (Merged)
Tiny
PIANOHEAT
  • MEMBER
  • 1 POST
  • 1998 FORD EXPLORER
Computer problem
1998 Ford Explorer V8 Four Wheel Drive Automatic

I'm wondering just had the car serviced mechanic says everything looks good. It drives great but just after service check engine light came on. I have the car in Mexico and am hoping it is just some kind of reset they don't know about down here. What should I do?
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Wednesday, January 6th, 2021 AT 2:20 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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THe check engine light will only come on if the computer recognizes a problem. What you need to do is have the computer scanned. Most nationally recognized parts stores will do it for free, but I don't know what is available where you are. When it is scanned, it will identify where the problem is coming from. They can reset the light with their scanner. However, if may come on again. NOTE: Something as simple as a loose fuel cap can set the light.

Let me know if you have other questions.

Joe
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Wednesday, January 6th, 2021 AT 2:20 PM (Merged)
Tiny
PINGRAM54
  • MEMBER
  • 1 POST
  • 1998 FORD EXPLORER
  • 6 CYL
  • 2WD
  • MANUAL
  • 90,000 MILES
Ford Explorer Sport; Check engine light came on; code "fuel mixture too rich"; had light reset, came back on. Mileage seems to be down as well.
What is the reason? How much to repair whatever is not working properly?
Also, in the event it matters, I park on a hill every night; light came on the first hard freeze.
Thanks!
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Wednesday, January 6th, 2021 AT 2:21 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Sounds like you have a faulty oxygen sensor ( 02 sensor). This sensor controls the air to fuel ratio. It may also be a clogged or faulty catalytic converter. This will also cause poor air to fuel ratio, which in turn will cause poor fuel mileage. Cold weather is harsh on the catalytic system so if there is any fault such as the oxygen sensor starting to fail, the engine light will come on quicker then if it were more warmer weather.

Really, there is no need for alarm as far as the vehicle performing well, but the fuel mileage will be down and the engine light will remain on which is quiet an annoyance to most.

Hope this helps.
Thanks for using 2carpros. Com!
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Wednesday, January 6th, 2021 AT 2:21 PM (Merged)
Tiny
DAVE H
  • MECHANIC
  • 13,383 POSTS
LEAN DRIVEABILITY SYMPTOMS: MAF SENSOR CONTAMINATION
TECHNICAL SERVICE BULLETIN
Reference Number(s): 98-23-10, Date of Issue: November 23, 1998

Related Ref Number(s): 98-23-10
ARTICLE BEGINNING
MASS AIR FLOW (MAF) - SENSOR CONTAMINATION - SERVICE TIP
APPLICATION
Model(s): Ford: 1990-97 Thunderbird
1990-99 Mustang, Taurus SHO
1991-99 Crown Victoria, Escort,
Taurus
1992-94 Tempo
1993-97 Probe
1995-99 Contour
Lincoln-Mercury: 1990-97 Cougar
1991-99 Continental, Grand Marquis,
Sable, Town Car, Tracer
1992-94 Topaz
1993-98 Mark VIII
1995-99 Mystique
Light Truck: 1990 Bronco II
1990-97 Aerostar
1990-99 Ranger
1991-99 Explorer
1994-96 Bronco
1994-97 F Super Duty, F-250 HD
1994-99 Econoline, F-150. F-250 LD,
F-350
1995-99 Windstar
1997-99 Expedition, Mountaineer
1998-99 Navigator
1999 F-250 HD,
Super Duty F Series
Bulletin No: 98-23-10
Date: November 23, 1998
ISSUE
This TSB article is a diagnostic procedure to address vehicles that exhibit lean driveability symptoms and may or may not have any Diagnostic Trouble Codes (DTCs) stored in memory.
ACTION
Follow the diagnostic procedures described in the following SERVICE TIP. The revised diagnostic procedure is a more accurate means of diagnosing the symptoms.
SERVICE TIP
MASS AIR FLOW (MAF) DISCUSSION
MAF sensors can get contaminated from a variety of sources: dirt, oil, silicon, spider webs, potting compound from the sensor itself, etc. When a MAF sensor gets contaminated, it skews the transfer function such that the sensor over-estimates air flow at idle (causes the fuel system to go rich) and under-estimates air flow at high air flows (causes fuel system to go lean). This means Long Term Fuel Trims will learn lean (negative) corrections at idle and learn rich (positive) corrections at higher air flows.
If vehicle is driven at Wide Open Throttle (WOT) or high loads, the fuel system normally goes open loop rich to provide maximum power. If the MAF sensor is contaminated, the fuel system will actually be lean because of under-estimated air flow. During open loop fuel operation, the vehicle applies Long Term Fuel Trim corrections that have been learned during closed loop operation. These corrections are often lean corrections learned at lower air flows. This combination of under-estimated air flow and lean fuel trim corrections can result in spark knock/detonation and lack of power concerns at WOT and high loads.
One of the indicators for diagnosing this condition is barometric pressure. Barometric pressure (BARO) is inferred by the Powertrain Control Module (PCM) software at part throttle and WOT (there is no actual BARO sensor on MAF-equipped vehicles, except for the 3.8L Supercharged engine). At high air flows, a contaminated MAF sensor will under-estimate air flow coming into the engine, hence the PCM infers that the vehicle is operating at a higher altitude. The BARO reading is stored in Keep Alive Memory (KAM) after it is updated. Other indicators are Long Term Fuel Trim and MAF voltage at idle.
NOTE:The following procedure may also be used to diagnose vehicles that do not have fuel system/HO2S sensor DTCs.

Symptoms
Lack of Power
Spark Knock/Detonation
Buck/Jerk
Hesitation/Surge on Acceleration
Malfunction Indicator Lamp (MIL) Illuminated DTCs P0171, P0172, P0174, P0175 may be stored in memory
OBDII DTCs
P0171, P0174 (Fuel system lean, Bank 1 or 2)
P0172, P0175 (Fuel system rich, Bank 1 or 2)
P1130, P1131, P1132, (HO2S11 lack of switching, Bank 1)
P1150, P1151, P1152, (HO2S21 lack of switching, Bank 2)
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Wednesday, January 6th, 2021 AT 2:21 PM (Merged)
Tiny
ANTHONY TRAVIS
  • MEMBER
  • 4 POSTS
  • 1997 FORD EXPLORER
  • 2WD
  • MANUAL
  • 137,000 MILES
Hello thanks for responding, the dealer does not have a code reader, hes small time works from home.
Also there is a rumbling sound when you slow down, and louder when turning slowly left side.
Dealer says sound is nothing unusual!
I like the car but fear it could be a potential nightmare, I could low ball him, and use saved moneyfor any repairs if he goes for it, he wants 2000, I was gonna offer 1200. Please advise.
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Wednesday, January 6th, 2021 AT 2:26 PM (Merged)
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
2000 dollar truck and he cant afford a $60 dollar code reader? If you cant decide and he wont take your offer just move on.
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Wednesday, January 6th, 2021 AT 2:26 PM (Merged)
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
I would'nt buy 1 of these anyway even if it was cheap!
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Wednesday, January 6th, 2021 AT 2:26 PM (Merged)
Tiny
ANTHONY TRAVIS
  • MEMBER
  • 4 POSTS
Thank you, I appreciate the good advice.
I will offer 1000 and he can take or leave theres plenty more out there. Thanx again guys
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Wednesday, January 6th, 2021 AT 2:26 PM (Merged)
Tiny
ANTHONY TRAVIS
  • MEMBER
  • 4 POSTS
Thanks for advice, I think I leave this truck for another mug to buy, not in a desperate rush.
Thanks again
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Wednesday, January 6th, 2021 AT 2:26 PM (Merged)
Tiny
SHAWN1980
  • MEMBER
  • 1 POST
  • 1997 FORD EXPLORER
1997 Ford Explorer 6 cyl

recently changed my tensioner assembly and now my check engine light is on and wont idle can u give me a suggestion why
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Wednesday, January 6th, 2021 AT 2:26 PM (Merged)
Tiny
ZAOPC22
  • MEMBER
  • 9 POSTS
Well, normally when anyone works on a car too quickly or not paying attention it's possible that they could bump loose or unplug sensors. I do that sometimes. Replacing a tensioner will not set off a DTC (diagnostic trouble code). You could go to Kragen and get an innova code reader for $70 obd 2 any car made in 1996 or newer has the newer generation of OBD which is called OBD2. Please buy it and plug it in to your car and then message me with the code or codes. My name is David Newton from Susanville, CA.
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Wednesday, January 6th, 2021 AT 2:26 PM (Merged)
Tiny
JEFFRD390
  • MEMBER
  • 19 POSTS
  • 1997 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 183,000 MILES
My check engine light came on after I spun out im wondering what caused it to come on
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Wednesday, January 6th, 2021 AT 2:27 PM (Merged)
Tiny
OBXAUTOMEDIC
  • MECHANIC
  • 3,711 POSTS
Hello,

Could be almost anything. You could have broke off a sensor, a vacuum line or any number of things. The best thing to do is to go by your local parts store and have them pull codes. Post codes here.

Could also be that some moisture got into a connection or your knocked a connection loose.

.
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Wednesday, January 6th, 2021 AT 2:27 PM (Merged)
Tiny
IAN1965
  • MEMBER
  • 2 POSTS
  • 1996 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 79,000 MILES
My explorer revs high on startup on cold mornings then runs erratically until warm what could be the cause please? This causes the engine management light to illuminate
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Wednesday, January 6th, 2021 AT 2:29 PM (Merged)

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