ACCELARATION PROBLEM

1997 Nissan Maxima

Tiny

adi1991

June, 13, 2012 AT 5:59 PM

I have nissan maxima 1997 auto transmission. It has a problem that when I am accelerating it slowly the pistons knock and engine vibrate. But in sudden or fast acceleration the cars moves smoothly.

i already changed fuel pump and spark plugs with coil.

FOUND 8 RELATED QUESTIONS

Rachael

4 ANSWERS

Valves

1 ANSWER

7 Answers

Tiny

hmac300

June, 13, 2012 AT 7:43 PM

Scan for codes and check vacuum at idle if 15" or belwo susmpect clogged converter

Tiny

adi1991

June, 13, 2012 AT 10:01 PM

Sir,
how can I check (vacuum at idle if 15" or below suspect clogged converter)and where I will find this.

Tiny

rasmataz

June, 13, 2012 AT 10:12 PM

You need a vacuum gauge -You sure the engine is not detonating/pinging if so check the knock sensor and also if the engine is overheating

Tiny

adi1991

June, 14, 2012 AT 6:38 AM

No the engine is not pinging. Only the problem which I told you. Piston knocking at the time of slow acceleration.

May be it is from gearbox?

Tiny

rasmataz

June, 14, 2012 AT 11:56 AM

You need to verify where exactly that knocking is coming from-

Tiny

adi1991

June, 15, 2012 AT 8:34 PM

Example - this knocking is same when we are accelerating car from 0 km at 2 gear or 3. Means piston knocking.

Tiny

rasmataz

June, 15, 2012 AT 8:51 PM

Could be piston slap/wrist pin-either way it has to be fix with that mileage

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