1999 Lincoln Continental Vacuum hose leak?

Tiny
KAH71
  • MEMBER
  • 1999 LINCOLN CONTINENTAL
Engine Performance problem
1999 Lincoln Continental V8 Automatic 105, 00 miles

Hi, I am having problems seems like between 1st and 2nd and even 2nd to 3rd struggling. When I start to go, it struggles to get into gear it seems like, I have to back off the accelerator and start again and it accelerates like it should. It's not slipping though. Trying to explain the best I can. It's almost like I have it in park and it doesn't go anywhere when I try to accelerate. It growls and when I back off, and accelerate again, it progresses and I feel it kick into gear and it does it, not as much getting into 3rd. When I get up to 55 mph and up it performs fine. It's stopping at lights and stop signs it hesitates. Not always, but more lately. I was wondering if it could be a leak in a vaccuum hose because it doesn't feel like it's the transmission. I know the car has a rebuilt transmission in it because I have the receipt that was in the glove comp when I bought the car. Would a diagnostic test be in order? The engine light has been on lately, but it came on after my fiance fixed the suspension. (That was a quick slipping the part back into place for the automatic adjusting suspension. The part holdin it on came off somehow) I have since had to do it.) Anyway, that's all he did and the light has been on ever since. Coincidence? I don't know. The car has done this hesitating, off and on for a year now. It seemed to do it when I tried putting a cheaper gas in it, so I've stuck to premium and it's been fine until recently again. Maybe with gas being so high, they are doing something different to the premium like cutting it with methanol or something and my car doesn't like it. Any suggestions or help is greatly appreciated. Thank you!
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Monday, June 9th, 2008 AT 6:49 PM

5 Replies

Tiny
SERVICE WRITER
  • EXPERT
I would start off by retreiving the codes, there may be codes related to the performance or the transmission in there. Common to have codes tied into this kind of problem, but not always.

Post what you find, and we can go from there.

Was the torque converter replaced also?

I assume the fluid is full.
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Wednesday, June 11th, 2008 AT 4:49 AM
Tiny
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I don't believe the torque converter has been replaced and all fluids are full.
I got the printouts of the codes: P0171 and P0174.
I did notice today that if I slooowly accelerate, it seems to do fine. However, that is not always possible. Also, it seems to do better in cooler weather than hot, if that makes any difference. I have also noticed my mileage has decreased. I used to get around 20 mpg and now I get 16-17 mpg.

Thank you for your assistance!
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Wednesday, June 11th, 2008 AT 9:41 AM
Tiny
SERVICE WRITER
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Okay, this is a lean code from both banks. This engine is common for a leaking intake gasket where you need to replace the intake bolts 6 internal gaskets and the outer intake gasket. There is a particular tightening and torque on these.

This can be verified sometimes by spraying carb cleaner around the plenum and see if the idle changes.

Ideally, a scanner that can read short term fuel trims and vacuum readings would be the better way.

I have also seen bad MAF sensors cause these codes, which cleaning the sensor can help.
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Wednesday, June 11th, 2008 AT 10:54 AM
Tiny
KAH71
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I decided to take a look under my hood to see if I could just see anything out of the ordinary (as if I would really know), and I found a hose leading from my air filter - not sure what the other end connects to, but it wasn't connected at all. Just laying there. I connected it and have driven around, and it seems to have fixed the problem, but I can't get autozone or advance auto to reset my codes. They say they don't do that. I know it won't run optimally til that service light goes out, so I am not sure if that is the real culprit or if I do need other service. However, I was doing some research online yesterday and found that my vehicle along with many others have a TSB for a MAF sensor. So, I may need to do that and also I will have my cousin do what you suggested. He is pretty good at fixing cars and pretty much anything. I really appreciate your help! I do have a picture of my hose that wasn't attached. Thank you and have a great day!


http://www.2carpros.com/forum/automotive_pictures/199819_detachedhose_1.jpg



http://www.2carpros.com/forum/automotive_pictures/199819_hose_1.jpg

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Thursday, June 12th, 2008 AT 9:06 AM
Tiny
SERVICE WRITER
  • EXPERT
Nice job of looking, that is probably the problem.
You can pick up a code reader that is capable of clearing as well as reading codes.
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Thursday, June 12th, 2008 AT 9:12 AM

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