Opel astra will not accelerate engine running perfect

Test fuel pressure if below spec.get new pump

No one can answer this here....you have a mechanic with the car right in front of him and he has no idea what is wrong......sorry.

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until you know exactly what it is then the answer is YES.. The biggest effect will be low economy and performance. Have a compression test done to check for head gasket and valve problems. These 2 will eventually require the head off and major work done if left too long. First step is to have the fault codes read as it may be a simple plug, HT lead of if individual coils , a faulty coil. Check the distributor cap if it has one for cracks and carbon tracks between the HT points . Check for dirt on the outside causing a short in the HT circuit.. Check for vacuum leaks (lean mixture hotter than normal temp). Check brake booster hoses and hoses to the inside vent controls. Remember the engine is trying to tell you that it is not well and like yourself if you do nothing it will get sicker and be very expensive to fix.

can you post engine code please to be able to help you further..... computer (ecu) you don't need a new one that is for sure. you can buy a cheap code reader for vauxhall's (opel) OBD2 can read ecu codes. most problems occur in the egr most times it just needs a clean out. and some times it can be the CAT sensor plug. also the traction wires are under the car. so would check that. you can also buy a code reader/ writer that will test everything. I have one for mine and it has saved me a lot off money. and can read any ob2 plug. and other makes off cars. handy to have. save you a lot of money at a garage. but with engine code that will help more at the moment.

There are sensors that detect if the engine is running after it starts. Oil pressure sensor is a major one. I don't know exactly since I don't have an electrical diagram to see all the possible sensors.

Check your spark plug wiries.

yes i have one of these cars myself and its a flying machine ,beats BMW 3 series away from lights no problem but as for your problem iam not sure without my head under thge bonnet and have a play ,iam thinking more in line of mass air flow sensor for acceleration problem but dont think this on its own would cause the idle problem ?' to be honest i would need my head under the bonnet to hit it with a hammer in the right sopt so to speak

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Joe

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i got opel astra 160i 95 model. it jerks when the engine is hot/warm when excellerating.