Q: Check engine light on after storage.

asked by on

I just purchased a (one owner) 1994 Ford Econoline E 150 (5.8)van. The check engine light had came on for the first time after the previous owner had stored it inside a shed for a few months. I had the oil changed, new plugs and wires and a new air filter installed. The light is still on, but what's strange is the light will go off as soon as I press on the accelerator. So as long as I'm driving around it's not on, but as soon as I stop at a traffic light, etc. it's back on. Also, it seems that the engine has started running more rough and the transmission is starting to shift rough also. I've done a little searching around, and it seems that the sensors have a big part in what information the computer receives. I've learned that there are many sensors and two or three of them (being bad) could cause the low power, rough shifting and high idle while in park . Your thoughts please. I know you'll say take it for a diag.test. Autozone can't test 94. Replace EGR or O2 first? Thank you

My car has 138000 miles.
My car has an automatic transmission.

Autozone cannot hook a code reader to any vehicle manufactured before 1996 generally because these are not OBD-II equipped vehicles. An experienced technician like one from YourMechanic however is capable of pulling the check engine light fault codes fro the vehicle either by using a professional scanner that can read OBD-I equipped vehicles or by using the procedure where data circuits are crossed and the check engine light will flash in a sequence that will tell the technician the trouble code. This is the best place to start instead of guessing at the problem. Consider hiring the assistance of a trained technician who can come out and take a closer look at the vehicle, retrieve the fault codes and offer a more personal diagnosis.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Check engine light on after storage.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: Can't pass smog check due to Check Engine light

The Check Engine light requires a special scan tool to determine the issue. Additional diagnostics may be required. An intake leak is common on this engine and may cause leaks, low fluids, and many other issues. With the vehicle sitting...

Q: heater works for about 20 mins then starts to blow cold air

Check for low coolant level and, if low, there is a possibility of air trapped in the system. Check for collapsed (or soft) hoses. Check your engine operating temperature to see if it is in the normal range of 195...

Q: Car hesitates and jerks uphill

It's possible that your vehicle may need a tune up. If your vehicle is equipped with a distributor, the cap and rotor should be replaced as well. I would recommend help from a certified mechanic to assist you with your...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.