Throttle is really messed up. I really haven't looked into it yet because its so cold out but I wanted to see if anyone knew what is going on or if something is broken / not working properly.

2004 Crossfire Coupe - 6 Speed

Symptoms
1. Zero to Half throttle works fine but when you 3/4 - WOT (Wide Open Throttle) the RPM's fall and car almost dies then the RPM's jump up.

2. Everything else works fine. drives fine just can't 3/4 - WOT.... which is painful
Throttle reset did nothing.

[YOUTUBE]

 

We just had a member with a throttle problem.. disconnecting the battery for a few minutes took care of it.. it's free so give it a shot.

 

Did that, left it disconnected over night and no luck same problem, also tried the Throttle Reset but no success.

 

Is that a check engine light on?

 

Looks like multiple trouble lights are showing on the dash . . . Suggest pulling codes with an OBDII meter and see what your Crossfire has to tell you about its problems . . .

 

The right hand side won't be any indication of an issue related to the problem - light out - abs - bas/esp and seatbelt. But the cel is most likely key to the issue.

 

That's a low washer fluid indicator, bulb out, BAS/ESP...

Possibly throttle body failure... are you hitting the kick down switch when you push it to the floor or are you pushing the pedal to just before activating WOT?

 

Could be dirty TPS contacts inside the TB, you can remove the black plastic cover carefully and clean the contacts and board runs.
Might help.

 

You are right, of course . . . but just an indication that several issues exist with his car that have not been addressed. One needs to fix issues as they arise or soon you just end up with a POS car.

 

Hello,

The car seems like it has some issues but it "really" Fine

EAS/ESP - Because I disconnected the battery and it was the first start.
SeatBelt - Because I wasn't wearing it.
Light out - Its true, Side light is out, will fix in better weather.
Check Engine - Because of CODE P0102 (Mass or Volume Airflow A)
( I just retested to make sure there was no other codes)

Any Ideas?

 

Umm.... k. Did you try disconnecting the MAF sensor and then running the engine? With the MAF sensor disconnected the engine will go into a sort of default AFR setting... If it runs better when the MAF is disconnected then you have your problem.

 

I can try in the morning where is the MAF sensor?

 

Remove air box:
Pelican Mercedes-Benz Tech Article - Mercedes Air Filter Replacement - C230 / E320 / S320 / ML320 / CLK320 / SLK320

Disconnect MAF sensor (ONLY DO STEP 1 AND 2):
Pelican Mercedes-Benz Tech Article - Mercedes MAF Sensor Replacement - C230 / E320 / S320 / ML320 / CLK320 / SLK320

 

Ha ha ah a aha a no..... Not till spring..... Forget it! TOO COLD!!
Mine you that it Idle's perfectly and has no problems with acceleration till more then 3/4 - WOT. If that helps with hints to the problem. OH and it did start " the throttle problem" till I hit a a big bump in the road just before it got cold.

 

Cold killed my gas pedal. When it was cold out i would hit the gas and it felt like pushing on a rubber band. You will understand if it is the same. Real slow reaction and crazy reactions to gas pedal.

 

Its not because of the Cold it started happening just before fall-ish

 

Warm day out
Disconnecting the MAF did nothing really little rough if anything.
In the video its WOT you can hear it almost die then come back to alive.

New video

 

Anyone have any ideas on what it can be?

 

Just went through your symptoms again... totally missed that the temp. gauge is reading -80/85 degrees Celsius (-110/-121 F)... is your exterior temp. gauge damaged? As that would cause all kinds of issues... the throttle, maf and ambient temp. gauge work in tandem with one another to provide the correct fuel to air ratio. Obviously if it thinks air is -80c then it would presume that there is denser air entering the combustion chamber and therefore not opening the throttle fully.

Is your code scanner able to verify the faulty temp. sensor?

The sensor is located in the lower grill...
Location of Outside Air Temperature Sensor - Mercedes-Benz Forum

Unless it really is that cold where you are, in which case disregard.

 

GOOD CATCH !!!!
I totally overlooked that. (as did the other 308 people that have viewed this thread )