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Check engine light?

Tiny
CJESSEN
  • MEMBER
  • 1998 FORD RANGER
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 150,000 MILES
The check engine light keeps coming on. We had the camshaft sensor replaced, we have had it tuned up, we have oil changed every 3000 miles. It passed inspection last AUGUST with an exception we had to replace the gas cap. Any suggestion as to what could be wrong?
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Monday, July 7th, 2008 AT 6:28 PM

15 Replies

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Lets run the codes

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

or take it to autozone and have the computer scanned for codes (they do it for free) then get back to us
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Monday, July 7th, 2008 AT 6:32 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Go to Autozone and get the computer rescanned and comeback with the OBD2 code/s this is where we start
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Monday, July 7th, 2008 AT 6:34 PM
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Holy mackeral. Great minds do think alike!
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Monday, July 7th, 2008 AT 6:38 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Tim you beginning to scare me with your thoughts-Lets go do it there's a lot of them that needs help
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Monday, July 7th, 2008 AT 6:55 PM
Tiny
RCHAVEZ48
  • MEMBER
  • 1 POST
  • 1998 FORD RANGER
  • 6 CYL
  • 4WD
  • MANUAL
  • 114,000 MILES
Checked Codes at Autozone. Shows that Oxygen Sensor on opposite side of Spark Plug one should be checked. Fuel filter should be checked. Fuel pump pressure should be checked. I want to replace the fuel filter first, then try the oxygen sensor(s), and last have the fuel pump checked. Is this something a weekend mechanic like myself should try or is the cost of tooling, test equipment, etc more than I could save?
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Friday, November 27th, 2020 AT 10:24 AM (Merged)
Tiny
RANGERDANGER17
  • MEMBER
  • 224 POSTS
O2 sensor are easy just like spark plugs but on the exhaust pipes fuel filter is easy justmake sure to relieve pressure before taking off those lines and the fuel pump is easy if you take the bed off instead of dropping the gas tank and will save alot!
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Friday, November 27th, 2020 AT 10:24 AM (Merged)
Tiny
MASTINO
  • MEMBER
  • 1 POST
  • 1998 FORD RANGER
I can't find my PCV valve. Where is it exactly? I've spent a good while looking for it, but can't find it. Also, my check engine light is on. Egr reading low something. The machanic said to just clean the vac. And that the egr valve itself is good. But is it?
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Friday, November 27th, 2020 AT 10:24 AM (Merged)
Tiny
LOVESCARS
  • MECHANIC
  • 359 POSTS
Pcv should be on the valve cover as most of them are could be metal or plastic
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Friday, November 27th, 2020 AT 10:24 AM (Merged)
Tiny
CRNVIC2002
  • MEMBER
  • 2 POSTS
Try looking on the left side of the engine (from drivers seat). It is mounted in the oil separator which is towards the front of the engine.
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-1
Friday, November 27th, 2020 AT 10:24 AM (Merged)
Tiny
PCD208
  • MEMBER
  • 2 POSTS
  • 1998 FORD RANGER
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 83,000 MILES
Hi I have a 1998 ford ranger and the check engine light came on and it read an egr valve problem so I had it cleared to see if it would come back on and it didnt till about a day worth of driving so I had it cleared once more and it came back on agian but not immediatly so what should I do since it didnt come on immendiatly it isnt a bad replacement situation right? So should I have it replaced or could it be another smaller proublem?
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Friday, November 27th, 2020 AT 10:25 AM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Hi there,

This is a pollution issue, you may fail your next smog test if it is faulty, the internal valve may be damaged that is why it could be re setting the fault light, I would just fit a new one and then you won't have a problem.

Mark (mhpautos)
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Friday, November 27th, 2020 AT 10:25 AM (Merged)
Tiny
PCD208
  • MEMBER
  • 2 POSTS
So do u mean that I should replace the whole valve?
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Friday, November 27th, 2020 AT 10:25 AM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Hi there,

Yes I feel that is what you need to do, but that is with out being able to check the system first hand, may be have a mechanic give an opinion as well as he will be able to see this first hand.

Mark (mhpautos)
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Friday, November 27th, 2020 AT 10:25 AM (Merged)
Tiny
BUCKSTER_F150
  • MEMBER
  • 1 POST
  • 1998 FORD RANGER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 325,968 MILES
Check engine light came on so I plugged my code reader in (awsome tool to have) code P0171 and P0174 and says system is too lean bank 1 and bank 2, my question is what sensor do I replace?
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Friday, November 27th, 2020 AT 10:25 AM (Merged)
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
That indicates the first sensor on each exhaust manifold before the catalytic convertors.

But since both are bad at the same time I would look over the wirng harness, make sure its good and connected. Also check for vaccum leaks, causing the code to seem lean.
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Friday, November 27th, 2020 AT 10:25 AM (Merged)

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