1994 Buick Lesabre service engine soon light. Can't read code.
Tried two different readers. Neither could communicate with the computer. Car runs fine but it's getting intermittent service engine soon light. It will be out then after 30 min. it will come on and stay on. Park and restart it takes 30 mins to come on again. Suggestions ?
Re: 1994 Buick Lesabre service engine soon light. Can't...
I found several shops in my area, Albany, NY that had the older code readers. It worked fine, and cost me $30.00. It showed a bad O2 sensor that I replaced myself. I suggest you go to a reliable shop. Auto Zone/Advance etc.. do not have the right code readers.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
the cehck engine light has nothing to do with the car being serviced. The check engine light comes on to alert you the the engine computer has detected a fault with either a sensor or something it controls. It could be something as simple as a loose gas cap or it could be letting you know the engine is running lean or any number of several hundred other things that can go wrong.
Your best option is to have the computer scanned for trouble codes. They make inexpensive code readers for about $50 U.S. if you would like to read them yourself. You can also contact your local parts store to see if they can scan for codes (DO NOT BUY ANYTHING THEY RECOMMEND UNLESS CONFIRMED BY ANOTHER SOURCE). The last option is to bring it to a shop and have them diagnose the problem. There will usually be a set fee that is charged for this service.
Does this have a "Check Engine" or "Service Engine Soon" light on? If so, get the codes pulled and post them back here along with the engine info. If no codes are present then it may well be a bad crankshaft sensor. I have seen many of these give intermittent problems (usually heat related) and do exactly what you have described without setting a code.
with a test light test the ALDL plug for battery power the pin right next to it willl be ground. ( hook the test light to power and a ground will light the light) the check engine light should come on and if you crossthe upper two pins in the aldl the check engine light should flash out the codes. The code reader might not be working and may need to hook it to a different car and see if it reads a different car.
If the service engine light is on, it could be a faulty sensor or anything electronical with the car. It may even be something non noticeable. The only way to check exact problem is to run error codes.
It NEVER was the camshaft sensor! Unless, you've removed the engine lately, which I doubt. RUN to Advance Auto Parts and buy a can of "SeaFoam" and add to your gas tank per instructions...drive at least 100 miles and the problem should go away...IF it doesn't you'll have to replace the O2 sensors in the exhaust system...Any good mechanic should be able to do this for much less $$ than the dealership DO NOT go to the dealer for repairs! Good Luck
You need to have the vehicle scanned or pull the code out with a code reader,and address/fix the code.If you do not repair the problem,you can clear the code,but the service engine light will come right back on.To clear the code,you can disconnect the negative terminal on the battery for at least 20 minutes,then reconnect the battery,but the car is going to be hard to get to idle,because sometimes the computer has to relearn how to idle the engine without stalling.Good luck.