|
|
Help with 99 Ford Explorer
|
|
|
| |
|
|
grabula
New User
Jan 12, 2010, 7:57 AM
Post #1 of 5
(3204 views)
|
|
Help with 99 Ford Explorer
|
Sign In
|
|
I've taken my vehicle to a mechanic 3 seperate times and he has no idea what the issue is. He says he can't duplicate it but for me it happens just about everytime I drive it. Here is the breakdown I gave him:
- When maintaining speeds of 35mph and 55mph, RPM's drop down from 2000-2500 to below 2000 and I can't get any pickup or gain any speed. I can take my foot off the gas and then press it again and sometimes that fixes the issue.
- When this happens I can maintain speed but cannot accelerate.
- Occasionally while idling the RPM's drop down repeatedly. It idles at around 1100-1200 normally, but drops down to about 500-800 repeatedly about every few seconds.
- Occasionally while driving at high speeds 55+ there is a loud "clunk". This is typically when roads are in a bad condition. We have confirmed 4 wheel drive is not working and I suspect this may be related.
I bought the truck in August and since then it's gradually got worse. It seems to occur more frequently when the engine has warmed up a little.
Mileage is 143K, engine is a V6
Thanks for you help in advance.
Jason
|
|
| |
|
|
brager
User
Jan 12, 2010, 3:41 PM
Post #2 of 5
(3192 views)
|
|
Re: Help with 99 Ford Explorer
|
Sign In
|
|
that sounds like trying to find a needle in a hay stack :)
it could be a number of things do have the engine light on?
|
|
| |
|
|
way2old
Veteran
/ Moderator
Jan 12, 2010, 5:15 PM
Post #3 of 5
(3185 views)
|
|
Re: Help with 99 Ford Explorer
|
Sign In
|
|
Since you can make the problem occur, have your mechanic ride with you and show him what is happening. A lot of times that is all it takes for him to understyand what the problem is.
Being way2old is why I need help from younger minds
|
|
| |
|
|
grabula
New User
Jan 13, 2010, 5:55 AM
Post #4 of 5
(3176 views)
|
|
Re: Help with 99 Ford Explorer
|
Sign In
|
|
Brager - I do have an engine light. The mechanics run the computer a few times and come up with some dirty sensors, which he says he's cleaned. It was off last night when I picked it up but turned on again this morning on my way in to work.
I have a hard time believing my mechanic is taking my truck for a spin for any amount of time. Driving it from the shop to my place of work - about 4-5 blocks, I experienced some issues as well as going to and from work over the last 24 hours. I've decided I don't think my mechanics heart is in it and I may take it to another place next week to have it looked at.
I did some research on the web and found something that might be the source of my issue. 99 Ford Explorers experience similar issue with a bad mass airflow sensor. Sounds like it would run less than 150$ to have it replaced so I may request they check that.
|
|
| |
|
|
Sidom
Veteran
/ Moderator
Jan 13, 2010, 10:12 PM
Post #5 of 5
(3168 views)
|
|
Re: Help with 99 Ford Explorer
|
Sign In
|
|
Not a whole lot of info to go off of here but if you were getting a P0171 & P0174, lean bank 1 & lean bank 2, I would definitely be looking at the MAF sensor real close. You can try tapping on it with the handle of a screw driver while it's running, if you get any fluctuation in the idle at all, I would replace the sensor.
Did your tech take a fuel pressure reading @ idle & high speed?
(This post was edited by Sidom on Jan 13, 2010, 10:12 PM)
|
|
| |
|
Auto Repair Home
SEARCH
WHO'S 
LOG 
2006 Toyoto Camry XLE Driver Side Electric Window Trouble
Tierod end change caused some kind of leak
Grounding Cable, 2017 Jeep Renegade Trailhawk
equipment
Howdy
