My check engine light is on?

OK, First off I sugguest anytime you change the Cap you change to Rotor. Only makes sense. Why would you want to remove the Cap twice? Oh, and no it doesn't require the timing to be reset.

A couple questions.

Have you had the codes pulled? If not do so and post here.

What did the Plugs look like when you removed them? Any one look different than the others. Example covered with oil soaked with gas, deposits.

How long did it run good for once you replaced the Plugs cap and wires? How many Days, weeks, etc.

Post response here.[/Quote:22781a3869]

Thanks for the information.
After the plugs/wires and cap were replaced,
it ran for a couple of days before it cut-out and hard
to start and ran rough until again fired properly.
It seemed it was hard to start because it was flooded.

The Dealer was unable to get any code; did not find
any problems and even drove it for a while.

As for the pugs, they did look moist across the set. Also, changed the oil and noticed what look like gas infiltrated the oil.

Thank you.

My check engine light comes on about five minutes after I start my truck. I have ran a code scan on my truck with a Actron code scanner and have gotten with the KOEO codes of 83 and 84 and the code have to do with EGR control solenoid and EGR Shut off solenoid circuit failure. I have replaced the EGR solenoid. My engine light still comes on and get the same scan codes after I have replaced the EGR solenoid. Can you please help?

The solenoid was by the intake manifold and has two vacume lines attached to it and an electrical plug with two wires that plug into the solenoid component.

When driving I get an intermittent check engine light. No difference in performance when light comes on. After a while the light goes out. I have had the truck checked for codes and there are none. I have a slight hesitation on start up for first 30 seconds when temps are cold. Engine has slight ping or rap at 1500 rpm when going up hill. Biggest problem is vehicle get terrible gas mileage. About 10-12 MPG on combined city/highway. Changed wires, plugs and filters. Truck sat idle for about 9 months last year before I bought it. Very low miles and was used very infrequently by an older couple.

1991 Ford F-150 4x4 mileage: 75,000. I have been trying to solve some error codes for a while. I was getting all kinds of codes at first. I realized that my vacuum reservoir was rusted out. I have replaced it. I cleared codes and drove it for a period of time. I now get oxygen sensor errors 171 and 172 and 173. I seem to have terrible mileage also. After changing the vacuum reservoir, and still having O2 codes, I thought I needed a new O2 sensor. With the new sensor in place and running the vehicle on the highway for ten minutes, the service light comes on and stays on. I returned the sensor assuming I had a bad one. The new sensor seemed to help for a while but now the light comes on steady again after ten minutes on the highway, always with O2 sensor codes. I have also noticed that the vehicle starts much better in cold weather (-20) than it does in warm weather (around freezing temp). In warmer weather the engine seems to start and then miss immediately, giving similar characteristics of a flooded engine until it restarts. Any ideas would be appreciated.

Check the fuel pressure regulator, as it may need to be replaced. Also, check the fuel pump pressure because we have found that the fuel pumps in each of the tanks can work one day and not the next.

I have a 1990 f150 with a 300 inline 6 i had it for about 2 weeks now and it doesnt seem to be getting as much power as i should. Im going up a hill and its maxing out at 45 mph. The check engine light came on so i took it to get tested and it said the computer isn't responding with the scanner. It also has one bad fuel pump. I was wondering if this is just how fast the truck will go or could it be the computer or maybe another bad fuel pump. Any ideas will be helpful.
Thanks bill

I'm checking the fuel pressure tomorrow and the oil filter and gas filter are getting changed tonight. I took it to anouther place to get tested and they had the mb1 conection for testing the computer and still no read out.

Computer problem
1990 Ford F150 V8 Four Wheel Drive Automatic

I NEED HELP
it will run fine I get where im going and sometimes when I start it again it will turn over its hard to get started when it does start it burns rich and check engine light comes on shakes alot like its starved for fuel put my code reader on there and it say vehicle not responding and whats really weird is that the overdrive button wont work. Thanks josh

Yes there is black smoke from the exhaust

The engine light flashes sometimes, but ti stays steady @ 35 mph. There is no hesitation and seems to run smoothly. I have changed spark plugs and that seemed to make no difference with the light. What do I need to do? I can't get a diagnostic code if it want stay on continuously. I hope you can help.