[SoCalLotusElise06]

My car began to run really funny. I have almost no power after 3,500rpm, and it takes forever to go from 3,500rpm to 5,500rpm. Also at stops, the car wants to stall. anic:

As many of you know, I have a chronic P0420 code issue. The CEL/P0420 is not on at the moment, but been on and off (it's off now, but stored in the ECU).

Also I have a weird high-pitched noise around 3,800rpm, but based on my previous experiences, I think it's another cracked Stage-II..., but I could be wrong.

Your thoughts? Thanks in advance! :up:

 

[Bavarian Motorist]

Can you check for any pending codes?

 

[tesprit]

Your problem sounds very similar to this thread: http://www.lotustalk.com/forums/f101/06-elise-choke-around-3200-rpm-71956/ The Lotus dealer is telling him it is a bad DBW throttle body.............

 

[SoCalLotusElise06]

Can you check for any pending codes?

I just checked for the codes. Only code I found was P0420 that was stored. I've had P0420 issue over and over, but it's the first time the car is acting this way...

 

[SoCalLotusElise06]

Your problem sounds very similar to this thread: http://www.lotustalk.com/forums/f101/06-elise-choke-around-3200-rpm-71956/ The Lotus dealer is telling him it is a bad DBW throttle body.............

Awesome. I think that is a good possibility! :up:

I thought about A/C relay as well (as that thread talks about), as I had engine cutting off issue with the A/C on in the past. I got the A/C relay replaced and that took care of the problem.

I guess it's time to get the DBW throttle body checked. Do you think that can cause P0420 (Catalyst efficiency below threshold)? :shrug:


****************

Just FYI, here's a list of things replaced so far under warranty.

- ECU (replaced)
- catalyst/downpipe (replaced 2x)
- camshafts (replaced)
- O2 sensors (replaced)
- fuel injectors and coil packs (replaced)
- exhaust (Stage-II cracks, replaced 4x)
- wiring harnesses
- passenger-side rear turn-signal (replaced)
- front/right turn-signal housing (replaced)
- A/C relay (replaced)

 

[apk919]

Awesome. I think that is a good possibility! :up:

I thought about A/C relay as well (as that thread talks about), as I had engine cutting off issue with the A/C on in the past. I got the A/C relay replaced and that took care of the problem.

I guess it's time to get the DBW throttle body checked. Do you think that can cause P0420 (Catalyst efficiency below threshold)? :shrug:


****************

Just FYI, here's a list of things replaced so far under warranty.

- ECU (replaced)
- catalyst/downpipe (replaced 2x)
- camshafts (replaced)
- O2 sensors (replaced)
- fuel injectors and coil packs (replaced)
- exhaust (Stage-II cracks, replaced 4x)
- wiring harnesses
- passenger-side rear turn-signal (replaced)
- front/right turn-signal housing (replaced)
- A/C relay (replaced)

I suggest jacking up the license plates and replacing everything in between...



j/k Patrick... hope this is resolved quickly...

 

[SoCalLotusElise06]

I suggest jacking up the license plates and replacing everything in between...



j/k Patrick... hope this is resolved quickly...

I might have to find an exorcist....

 

[Demonized]

I suggest jacking up the license plates and replacing everything in between...

Seriously. opcorn:

Lemon law that **** :x

 

[tesprit]

Awesome. I think that is a good possibility! :up:

I thought about A/C relay as well (as that thread talks about), as I had engine cutting off issue with the A/C on in the past. I got the A/C relay replaced and that took care of the problem.

I guess it's time to get the DBW throttle body checked. Do you think that can cause P0420 (Catalyst efficiency below threshold)? :shrug:


****************

Just FYI, here's a list of things replaced so far under warranty.

- ECU (replaced)
- catalyst/downpipe (replaced 2x)
- camshafts (replaced)
- O2 sensors (replaced)
- fuel injectors and coil packs (replaced)
- exhaust (Stage-II cracks, replaced 4x)
- wiring harnesses
- passenger-side rear turn-signal (replaced)
- front/right turn-signal housing (replaced)
- A/C relay (replaced)

I don't think the throttle body would cause the P0420 code, but you might want to contact Charliex for an affirmative on that.

You certainly have had a lot of stuff replaced already on your car. I sure hope this problem turns out to be something simple.

 

[SoCalLotusElise06]

I kinda gave the car an Italian tune-up, and the problem kinda went away.... I still feel that the car is lacking a bit of power than usual, but at least I don't have the unusual jerky feel coming from the motor.

What do you think the problem is?

I am not trying to b*tch about the car (I love my car). I am just trying to learn, and hear your thoughts.

 

[jlotusd]

i have this engine vibration @ 2800-3200 rpm and lack of response when on the gas. i haven't found the cause yet. i have BWR SC