[nathanD.rector]

Hi got a 1999 s320 with the m104 engine.Fresh fuel,and will not take more than on half throttle.No codes,idles nice,and starts fine.Ran a scanner all new plugs and coils firing even.Clean Maf,and oxygen sensor switching fine.Fuel pressure measure at trying full throttle at 62 psi.Fuel line from nitrous kit disconnected.New fuel filter.Wondering if injectors are shot.They spray when supposed to,but could be not enough.Problems started after adding Marvel Mystery Oil to tank,to take care of a miss,which turned out to be coil.Replaced all.
Side note for about a year prior to this car tach wiggles at certain temperture,about a 200 rpm difference in drive and idle.
third note all rear end lights out,now I know I need brakelight switch,but all rear lights
Replaced fuel,been doing this since June.
Wondering whats next,couldn't be cam sensor idles perfect,couldn't be purge valve idle good.

 

[nathanD.rector]

lights fixed,was doing relay work and left one unplugged.

 

[nathanD.rector]

note* A friend from England told me to check the actuator?Is there such a thing?

 

[slowhands]

the gears in your electronic throttle body have stripped, it happens... rarly.

 

[nathanD.rector]

I found out problem I think,its my throttle position sensor,matches symtoms

 

[nathanD.rector]

can the TPS be cleaned on a 98 - 99.Injectors pump fuel,but with no air bucking.plus I lubed TPS about the same time,I added MMO

 

[nathanD.rector]

still replacing stuff,fuel pump,and new MAF ordered.Next will be throttle position sensor,as no problems with 98 and 99 throttle bodies.

 

[Merc-S600]

You doing a good job Nathan ,keep it up . Lucky you know what you doing .
I had a good look at that Nitro bottle system you have in your car , isn't that bottle to small & what would you think it would do installed on the V12 ? .My knowledge with this Nitro boost is virtually ZERO + 1 . :thumbsup:

 

[nathanD.rector]

Merc 500 I would use a 200 shot on a v12,with dual tanks.I have two tanks but I switch them don't have enough room for a duel setup.A tank gives me about 6 races.Or last a month in once in a while street race.there 1/4 mile calculators for you to figure what 200 shot would do for your v12.At sea level my time should be 14.1 something. looked up time for a 389 hp v12 boosted to 589. 12.2 secs.

 

[nathanD.rector]

$390 in parts still won't take full throttle and no codes
new MAF,oxygen sensor,and fuel pump.computer next?