Vauxhall combo engine in any gear when reaching 3000revs engine cuts down to half power returns to normal when restarted

Steve Allison

• 5569 Answers
• Posted on Jul 20, 2008

SOURCE: 318ti M44 acceleration problem

Have someone handy to press the gas pedal for you after the engine has warmed up well; best if driven.

While you listen at the exhaust pipe, have your helper increase the revs slowly and note whether the exhaust note changes to a hiss, instead of the sound of an engine firing.

You may have a decayed catalytic convertor and when they come apart inside, they can clog mufflers and resonators (the second, smaller muffler).

I've had this happen on more than one car and when it happened on a Fiat Strada years ago, since the routing of the system was fairly straight and made of heavier gauge stainless steel, I fired two shots with a .357 magnum into the tailpipe.
Never had another problem with it.

Marvin

• 85242 Answers
• Posted on Nov 12, 2008

SOURCE: Car petrol engine revolution surges.

Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

SOURCE: when i drive my vauxhall

the first thing you must check, and probably the cheapest.

clean the map sensor with some cheap spray from radioshack or another shop where you can buy resistors diodes and things like that.

remove the map sensor from (nearly always the plastic part) from the air intake, spray it en blow it clean with a bicycle tyre pump

place it back again.

here is a nice link for you whit a movie about cleaning the map sensor;

http://www.automotivetroubleshootingsecrets.com/

I did it with the opel omega vauxhall MV6 from my son. when I had to take every part out of the way when replacing the oil cooler or heat exchanger a typical omega breakdown. (do saab v6 owners have the same problem with their opel based v6 ?

wilko from holland.

SOURCE: the red flashing light with the lighting bolts

John, is this an Hemi 5.7 truck 2500, and the ETC, MIL lights flash or stay on, then you have a sofware issiue with the PCM, DTC code will probably be, throltle reached forced limit, this can be only be fixed at your Dodge dealer, common problem 2003-2005 model years, also Tsb requires soft ware update to PCM, might under warranty depending on year of your truck. GOOD LUCK. RDJRP

SOURCE: problem changing gear

It might be time for a new clutch. Have your vehicle evaluated by a professional mechanic.