Engine wont rev

[jenkomagic]

My W126 500SEl wont rev over 5,200 RPM when held in gear and not over 4,500 RPM left in drive

I have new fuel pumps (adiquet pressure). Rotor button is not centifugal type.

new plugs leads etc. Any ideas?

 

[star]

is it missing when at these revs, if so check fuel pump relay but doubt its that, cud be fuel govenor on side of metering head. last check valve/ditributor timing as may have jumped?

 

[television]

You have 2 fuel pumps, take the live wire off each, one at a time and see if the engine still runs.

They are at the rear of the off side rear wheel

http://www.detali.ru/cat/oem_mb2.as...&L=765.706&CT=F&cat=568&SID=47&SGR=030&SGN=02

 

[Young 'Un]

Did you change your fuel filter when you did the pumps? If it is bunged up, the engine will get starved of fuel at a high rpm.

 

[television]

Interesting that my very first post on here was for a car with the same faults,,it turned out that the incorrect fuel pump relay had been fitted.

 

[GEORGEROV]

At 4,500 rpm , in "Drive", in a 500se you must be doing at least 110mph. What is the problem?.

 

[star]

At 4,500 rpm , in "Drive", in a 500se you must be doing at least 110mph. What is the problem?.

not if he's just pulled away.

 

[GEORGEROV]

Mine hardly ever gets above 3000rpm and I don't hang about. Strikes me as a crazy post!. Just my opinion.

 

[jenkomagic]

Mine hardly ever gets above 3000rpm and I don't hang about. Strikes me as a crazy post!. Just my opinion.

When I mentioned "left in drive". I was referring to the car changes gear at 4500 RPM at WOT going up through the gears. I can make it rev out to 5500 if I hold it in gear but then stops at that RPM like it has hit a rev limiter.

I have new fuel pumps, clean filters new plugs leads timing OK. Have not checked fuel pump relays though ill look into it.

IMO I don't think asking a question who's vehicles red line is 6,000 RMP when it changes at 4500 is a "Crazy" post when you missing out out possibly another 20 kws of power.

 

[star]

do u mean its changin gear at 4500 or just wont rev past that.

 

[television]

The fuel pump relay does contain a limiter

 

[jenkomagic]

do u mean its changin gear at 4500 or just wont rev past that.

Its changing gear at 4500, (if left in drive) but if i leaving it in 2nd gear as an example it wont rev past 5500

 

[star]

Its changing gear at 4500, (if left in drive) but if i leaving it in 2nd gear as an example it wont rev past 5500

I cant remember what ur car red lines at, but there wont be much more useful power past 5500, make sure ur gearbox control cable is adjusted correctly.