Ignition System Making Noise When driving Not applicable
Q: When I pull my 26' travel trailer up a steep grade and drop down into second gear, at 3200-3500 rpm I am getting pinging. This is the only time it does this. I never get pinging in any other situation. I am in California so the highest octane I can get is 91. I don't get this problem when I turn the same rpm with the trailer while getting on the freeway, only up a steep grade.
Please help!!!
A: sounds like carbon in the cylinder try AMSOIL PI or their foaming spray to remove it, same thing happened with my F250
Q: I have had the rear brake seals replaced in my Chevy Z71 three times in the last year. A few days ago the brakes started pulsing again. Are these seals hard to replace? Is there an high quality of seal that I can put in to stop this problem. The shop that does the work cannot figure out what the problem is. The truck has had a total brake job and it has 91,000 miles on it
A: A good seal that is hard to find is CR, All-Parts and most allpro's carry them.
They shut up my 95 Z71 a couple of months ago.
The worst problem with doing brakes on the new 4x4 trucks is that you cannot!
Press the front calipers back with the system closed.
I worked at treads auto service for five years.
I saw too many mechanics press the calipers without opening the bleader valve.
When the fluid is pressed back it blows the seals in the brake modulator valve.
it is by the porportioning valve.
It can be fixed but there are not many people who will rebuild brake parts for chevy's.
A new unit is about $400.00 at a dealer unless they have changed in price. Check All-Parts for a better price.
The front seals are pretty fun to change you have to pull the axle and the mounting flange.
Q: It chugs between about 2200 to 2400 RPM.
The fuel filter, plugs & wires were replaced a year ago.... about 10,000 miles. The cap and rotor replaced about a week ago.
A: Is this an automatic or manual transmission???
Also can you describe the "chugs" part better???...... Ed
Q: The abs light comes on occassionally, and on occassion, the brake pedal pushes further to the floor and I have little if any braking.
This is a intermittent, not to mention scary, problem.
A: These trucks have a problem called..."ghost codes"....
Pull BOTH of the brake fuses from the fuse panel with the key in the off position....
Leave both of them out of the fuse panel for at least one minute...
If this doesn't cure the problem, then you do have an abs problem, and you'll have to source the info to retrieve the codes as an indicator of where to look... Ed
Q: Gas mileage: 8-10 mpg.
new o2,tps,egr,no cat.,700 R-4 trans, timing good,new air cleaner, tbi spacer,new filter,good compersion, good oil pressure 30-45, new plugs, good wires, 186k miles, 285- tires, sensors check good, I'm at the end of the line.. Please advise..
A: If it is being driven hard or under load you will notice a massive drop in milage, my olds will give 22 mpg unless I floor it then the milage drops down to about 6 mpg its all in the foot , dont launch from a stop and cruise at constant speeds if possible will always help gas milage , even though the occasionall fire wall shattering foot stomp is fun it will throw your gas milage right out the window, make sure your tire pressure is good because low pressure makes your engine work harder.
Drive Train / Driveline Other Not applicable Not applicable
Q: I have a question about the four wheel drive. The 4WD indicator light flickers on and off, sometimes not even coming on. I can definitely tell I am not in 4WD as well. What could be the problem?
A: It's either a loose switch or the connection at the switch. Ed
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