Question about 2000 Saab 9-3 Viggen

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No Accelaration Hi I'm having a prob with my 2000 9-5s, when i accelerate hard the engine rev's out and gets stuck at 4000 rpm with no acceleration at all. Anyone know what the prob might be???

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Check your fuel filter and engine air filter. Sounds like your engine cannot breath or is not getting the proper amount of fuel to run well. Possibly also check your fuel pressure regulator.
Justin
Strictly Saab
Melbourne, FL

Posted on Sep 16, 2008

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I have a problem in a 1995 lexus es300 i start the car and it feels like a flooded start once the engine is on, i step on the gas and it floods only when accelerating, if i accelerate slowly it will go up...


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Check the spark plugs are the exact recommended specification.
I have just replaced the plugs and coils on my 1996 Jag, and when I accelerated hard, the engine would shut off at 4000 revs, the engine check light would com on briefly and the tacho would jump about. Long story short, the recommended plugs were (NGK) BCPR6ES ( R for resistance), I put in BCP6ES (no resistance). When I put the old plugs back in, it was back to normal, when I stepped on kittys tail, it got angry real fast all the way to red line! Resistance spark plugs were originally to suppress electrical interference on the radio, modern engines also need to suppress electrical interference to the engine management system.
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My fiat Palio keeps accelarating automatically. the accelarator cable is not stuck and the accelaration is intermitant .


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The engine and transmission in this cars drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPEDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM

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Rpm does not reach 4000 rpm


Neutral or Drive N rev limiter to prevent engine damage from no load over acceleration. D: many things could be at fault. Has your fuel filter been changed in the last 30,000miles. What about a tune up? Is your CEL(Check Engine Light) on? If so have a parts store check for codes, some do it for free. Then get back to us and we can go from there.

Jun 24, 2012 | 2003 Ford Taurus

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When turn on the car in the morning, i accelerate and the revolutions up to 6,000rpm normal. In 3 minute when the car up the motor temperature to the normal operation, i accelerate and the revolutions up...


To begin with, if you are revving a cold engine to 6000 RPM, you are asking for a blown engine. Most OBD vehicles are equipped with a rev limiter that will cut off fuel at 3000 to 4000 rpm to prevent you from over-revving your engine and blowing it up. If yours is revving to 6000 RPM cold, then the rev limiter, for some reason is not working while it is cold. I have no explaination for this. The best thing I can tell you is to stop revving your engine so high when it is cold unless you really want to see what an engine looks like after is has gone off like a grenade.

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CAR SURGES WHEN YOU ACCELERATE IN OVER DRIVE.


It may be the MAF sensor. In needs to be cleaned or replaced. Located on the throttle body, under the engine cover. Might need special anti-tamper Torx sockets to remove. 2 bolts. One wire connector.

I had to replace mine on 2002 3800 V6. Bucked and shook on moderate to hard acceleration at about 3500-4000 rpms.

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take it to a mechanic to check the timing. if the timing is off then it may run at a idle an a little above but once you rev it up then the timing will truely show an it will run like ****. have you checked your air filter that may be another cause. hope this helps

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When i turn the ignition on the engine start o,k.,the rpm is o'k but when i drive the cars the rpm stick on 3000 rpm can evetone tell me whats can i do


The rev counter could be faulty.
I hope the engine is responding ok on accelaration inspite of the rev counter being stuck on 3000rpm , if so thn its definately the rev counter being faulty.

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