Qmax03

These Issues Just started this week, I keep all my cars VERY well maintained and always do all services on time if not before.

Last week 4 Issues Came one after the other (spread throughout the week)

1. The " Check Gas Cap " Warning Light came on - Comes on then ill turn off and on the car, It goes away, as soon as I get on it a bit itll return. Im thinking I just need a New Gas Cap - Not to worried.

2. Squeaking Over bumps. I noticed that anytime i got over bumps or unevern road the Front Right side of the car has a Squeak - Im thing It most likely a Lower balljoint etc - Not to worried about this either I was meaning to go over all the bushing suspension parts.

* 3 . When Im slowing down to come to a light I notice the car kinda wants to JUMP forward, like the rpms rise for a quick second ... My foot is on the brake im slowing doen under 20mph and i feel the car kind of JUMP forward... almost like it goes into a lower gear im not sure... It did this since I got the car and sometimes its worse then other times... I spoke to another E55 guy he said his car does it randomly too.. But I dont think its normal

* 4 . Most of the time the car will jerk when the supercharger is being engaged if feels like... let say i take off froma light, Light on the throttle and start slowing giving it some extra gas ( i guess the supercharger is Engaging now) and itll jerk real quick. If i just floor the car nothing, if feels normal. It doesnt do it all the time , but enough to annoy me.

Any suggestions ? Anyone have these issues ?

novae500

1. new gas cap
2. lower ball joints and possibly upper ones as well. I replaced my lower and still get the squeaking.

3. i get that as well, rpms rise a bit and then drops as it changes gears??
4. normal

shardul

iTrader: (1)

+1

DVC

Also check swaybar bushings. You can do so by disconnecting the endlinks.

Qmax03

Thanks Guys , Im going to Get a new Gas cap today, Taking the car to the shop tommorow to get the front end done, what ever it needs plus some new bilstein rear shocks, i have that " dead body clunk " that ive read about on the forums.

HeissRod

The jerk of the s/c engaging isn't a sign of being shimmed incorrectly?

layzie12g

We did a set of lower ball joints on an E63 since we have never seen uppers fail in a squeaking fashion.

Well....

We were wrong. It was the passenger upper that failed. Double check everything before you order parts. At the time it really sounded like the lowers were squeaking. Listen to all ball joints, and spray lube/squeeze with channel locks to make sure.

ArmoE55

The SC engagement does that jerk...the car has a temper. It's tame and quiet, but you can always tell there's 500HP ready to go on tap. This is a great indicator of just that.

Tip: I've noticed that if I'm just cruising around in 'C' mode, the SC does engage violently. Try putting it in 'C' mode and see if it still happens.


Your other items were addressed above: sounds like ball joints, new gas cap, not sur on the slowing down and jerk motion, that seems ... dangerous.

Manuyc

yeah sounds about right. i have to change my bushings on mine