I have to replace rotted gas lines for a 99 sunfire.There are three lines that look to be two different sizes, Would you know what these are?

rusted gas line

Step 1:

One of two ways to fix this is to change the caliper bracket. This is the best way and probably the cheapest way as you can find plenty of these cars in wrecking yards.

Step 2:

The other way requires inserting a Heli Coil. You buy the Heli Coil kit for the original bolt and drill and tap the hole to a larger size and install the Heli Coil insert to restore the hole to original size.

Leonard,

Why not just order a new one? Don't try to make this yourself as it is a safety critical item.

I had a 99 sunfire and I am not sure about the 50 mile an hour thing but it idled around 650-600 it was an auto matic don't know if sticks are different.

The system is temporarily resetable, but since this problem occured i can promise you it will only get worse. Check out this website. It explains the problem and offers some DO IT YOURSELF solutions.
http://vatspasslockpasskeysecurityhelp.yolasite.com/
1995-2005 Sunfire

take it to your local repair shop let them test drive it ? could be fuel filter issues also a number of other things it could be a quick scan and monitor of the computer by a good tech will tell the story? hope this helps ?

Hi, I just replaced my tank for the same reason. It wasn't hard to replace but certain things did cause problems. First the bolts for the tanks straps will probably be rusted, rotted and seized, I had to cut mine also the clips for these bolts were rotted and had to be replaced.If your lines are original, they will be plastic so be careful when removing them, two of them should have a quick release type connection so you may need a special tool to take them off. Use a jack to support the tank removal and replacement and you shouldn't have too much trouble.

sounds like you got a malfunctioning float on your fuel pump (works like a toilet bowl) try adding magellans mystery oil (you can find it at most part houses like napa ect) to you fuel for a few tanks to see if it can loosen things up if not probably going to need to replace the part

Hi ejj509,

Both my 97 Passat and my wife's 99 Passat were throwing the same OBD codes you listed.

Both VW's had the same problem. There is no "quick" solution for the problem. I can tell you what I found, what I had to do and how I repaired both vehicles so they no longer throw this OBD error code.

I removed the black plastivc AIR pump and found that three of the six aluminum rivets which hold the AIR pump impeller housing together had rotted off so the case was leaking air. I went to a hardware store with one of the aluminum rivets I had removed from the AIR pump and bought six brass machine screws and brass nuts. I gouged the aluminum rivets out and replaced them with the brass machine screws.

After I had replaced the AIR pump in the VW, I cleared the codes and ran the diagnostics again.
It still threw the same codes!!!

Next, I removed the plastic top engine cover from the VW engine (VR6) and located the many air solenoids hidden under the cover. I went to a local NAPA shop and purchased an eight foot length of their smallest gauge neoprene gas line (1/8 inch ID).

I carefully removed each piece of rotted VW vacuum line from the air solenoids and replaced each rotted section with lengths of the new neoprene gas line. I had to follow out each of the old vacuum lines and replace them because they were badly deteriorated. This took about five hours to accomplish.

I replaced the plastic engine cover and connected up my cable from my laptop to the VW's computer port, cleared all of the codes and ran a new scan. This time the scan was clear! Woo Hoo! Apparently, the problem was both the leaking AIR pump and faulty, deteriorated (cheap) Volkswagen vacuum lines.

It was well worth the effort. My driveway has now become a bonafied VW repair shoppe.

It sound like the fuel sending unit in the tank is bad....There are only three things that can cause that. 1. The fuel sending unit is bad.....2. The instrument cluster is bad( highly doubtful)....3. A wiring problem( even less likely unless someone has been drilling holes in the floorboard or splicing wires together.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jonathan_3a3c556b4b17d1d2