Question about 2001 Toyota Prius

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Engine shudder Car started shaking at 40 mph. When we pulled over, the engine alternated between running smoothly and shuddering rather violently. We drove home, in electric mode as much as possible, and about half the time when the engine kicked in to assist the electric motor, it would shudder quite hard. Is this an engine problem, or maybe a problem with the fuel pump?

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  • 50 Answers

Possible camshaft / crankshaft sensor going bad.. please indicate if my solutions is helpful.. Thankyou

Posted on Apr 28, 2013

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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Thunder55
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SOURCE: Landcruiser GXL 2002 Turbo Diesel - Fuel ? problem

I can only relate this problem to those similar to Ford F150's,,,on the fords it would be bad grounds from the battery to the frame,and engine,,and from the engine to the Firewall.
This would play havoc with the ECM especially when it was damp.
So i can only suggest the obvious to me at least.
Good luck to you.

Posted on Jan 19, 2009

motor1258
  • 6674 Answers

SOURCE: Camry Shakes while idling and in low gear

First and easiest thing to try is put some additive in your gas like "heet" to remove any moisture that may have collected in your tank, and re-fill at busy station.

Posted on Jan 25, 2009

ourhowse
  • 2007 Answers

SOURCE: 1998 toyota corolla shakes before 2 rpm, check engine lights up

Not sure what is causing it, but it sounds like you're running on 3 cyllinders. Check plugs, wires, timing . timing belt may have jumped, bad injector, low fuel pressure.

Posted on May 13, 2009

  • 327 Answers

SOURCE: how to adjust the idle in 1992 toyota camry

its more like you got water in the distributor cap i did the same thing once the caps have an oring to seal them . i just got the car started cleaning it up washed the engine and had the same problem took the cap off and the oring was missing

Posted on Aug 08, 2010

  • 13 Answers

SOURCE: 1991 land cruiser inline 6

check for spark first. if theres spark then crack a fuel line while trying to crank to c if theres fuel getting pumped to the injectors. always start with the basics then go from there.

Posted on Jan 23, 2011

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I drive a 2001 Buick century custom when i


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Its cold start issues:----

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My 2007 buick rendezvous has a shudder starting at 40 mph and it smooths out at about 55-60 mph. this occurs with moderate acceleration. the tires and rims are fine had them checked out extensively. seems...


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1 Answer

Transmission shudder


I had a similar problem on my 93 Accord after I accidentally threw the car in reverse at 50 mph, obviously wrecking the transmission. When I got it rebuilt I was told the transmission pump was to blame (clogged with "shrapnel"). I, and your car manual, recommend taking the car in to get the tranny looked at. Especially considering you just had the fluid changed which is what would normally cause the problems you are describing.

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1 Answer

Car shudders at 40-55 MPH


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Jul 05, 2008 | 1998 Dodge Neon

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