When your check engine light comes on a code is stored in the vehicles computer system. This code is vital in troubleshooting the vehicle accurately. To access this code requires a scanner that most any auto repair shop or auto parts store such as Advance or Autozone will have. Most establishments will scan the code for free. My recommendation is to have the vehicle scanned and send the code to me. Normally the TCS may act up due to the check engine light coming on, so let's troubleshoot it first. Normally fixing one...will fix the other.
Send me the code and I will take it from there and will be able to better assist you.
Let me know when you get it, take your time.
I doubt it. Each cylinder has its own individual coil. For this to be the reason, they would all have to be bad....highly unlikely.
Was there recent work prior to this problem, or did it just happen out of the blue? Does the engine start to run bad over 40 mph?
Ok, thanks. There is actually a service bulletin for this. Click here (on the right of page 2)
Also check your battery cable connections to be sure they are clean and tight. Have you had the charging system checked?
Ok, that's good. Did you click the blue link above? If not, click it, scroll to page 2, top-right where it says "MISFIRE DTC'S" It explains a possible cause for this. My guess is the egr passages are clogged. I see this all the time. The only way to know for sure is take it apart, but with 177k....it's sure to be dirty.
Resetting the ecm is only necessary to clear the codes, but if the car is still running bad, it will come back on. To reset this ecu requires a scan tool. I wouldn't reset it until you check and clean the egr passages.
It's not too hard to do. Just go by the illustration in the article. You will need an air blower, spray carb. cleaner and a piece of stiff wire to dig the carbon out of the ports. Also, remember to remove the egr valve and cleaned the holes under it. The holes under it lead to the intake manifold...be sure an air blower can blow through them freely.
No, it has to be taken apart to be cleaned.
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