Oshin11

I don't know what else to check before going to the fuel pump itself. My car just shakes and the engine has a more "throaty" noise to it. I am thinking still an electrical problem but now I am not so sure. New DME relay didnt fix it. Possibly a fuse?

Oshin11

Fuse in the front trunk for the fuel pump looks fine. I am starting to think it may be the fuel pump but I dnt have much experience in this.

Peter Zimmermann

You probably should get the car over to Schneider's Autohaus and let them have a look.

Oshin11

I would but I dont know if it would be a good idea to drive the car on the freeway. Plus I don't want to have them take a look and then say "Ok thanks for the advice, I'll go do it myself now". To me that seems rude, and I don't want to be rude because I like the guys there.

Oshin11

Got home today and tried driving the car cold to see if I could eliminate the O2 sensor as the cause. Problem was still present on cold run so its probably not the O2 sensor. When I got back to the garage I looked in the engine bay and I hear a continuous clicking noise. It comes from the drivers side and is most prominent from the distributor area. Any way my distributor cap and rotor could be the source? Haven't opened it up yet, but my distributor cap and rotor were replaced 5K miles ago.

Oshin11

Ok the consensus I am getting from most people is that this particular problem can be a huge PITA since a million different things could be wrong....going to the Autohaus tomorrow....

Oshin11

I checked the cylinder head temp sensor, was reading 1.75 kOhms so I dont think that is the problem. I guess I can keep checking all the other things the bentley manual says to check for.

jester911

Oshin, when is the last time you changed the cap and rotor? I have had this problem a couple times and it turned out to be the dist. cap was toast and so was the rotor.

Oshin11

I do hear some majorly odd clicking from my cap and rotor jester, but I dont have MY TOOLS!!! I am driving to LA to pick them all up with a truck today. I hope its just a failure of the cap and rotor but I doubt it since its only 5K old. I can pray that its that easy of a fix though.

Amber Gramps

I was gonna say water in the distributor, but what do I know? That never happen' to me, no!

Oshin11

Well remember when I had surging for a day when I had steam cleaned my engine....water had gotten into the distributor was what I thought happened, but then it went away. I even opened it up and it looked fine. Maybe this is a latent aftereffect....I'll check before I drive to LA.

jester911

I don't drive my car 5k miles a year however I do change the cap and rotor that often. My car gets track duty as well but I really believe with the heat back there that those parts burn up fairly quickly. All you need is a flat screwdriver to pop off the cap and take a look.

Oshin11

Problem solved, I was in the garage about to open the distributor to check inside and saw the one screw from the distributor cap had popped. What happened was one side was loose and thats when I started to notice a little weirdness in the revving, as I drove it more one side popped open completely. The first time I looked in the engine bay I didnt see a problem because it hadnt popped open completely yet. So a few of the connection points weren't always firing, which made some of the piston chambers rich, and when it finally fired it revved my engine, hence the surging. Popped the locking screw back in, warmed up the car and it runs great now! Glad it was an easy fix. I also bought a complete set of replacement fuses to replace all the fuses in the front trunk, and I am glad I did so after reading someone else's post about her trunk catching on fire Now to replace that weltmeister chip with my stock 911 chip, anyone wanna buy a weltmeister performance chip? I don't like performance chips, I like it stock Anyhow thanks for all the help. Now to spruce up the interior and do a bunch of little fixes hehe. Next big project will probably be re-carpeting my car. AHHHH I am sliding off the slippery slope and I love it, I can't stop finding things to do to my car.

Amber Gramps

I would start fresh with a new disributor and rotor just in case they got a little too close. Did you thank the contributors above? I like the carpet idea, but I've gotta do some work under the car first.

jester911

Oshin, glad you got it figured out. The cheapest fixes are always the best. I would check the cap and rotor on the inside. That misfiring probably caused some undue arcing that may have burned some of the contacts.
I always carry an extra rotor button in the glove box and when I go to the track I also carry an extra cap.
Cheap and easy insurance.