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1998 Grand marquis: climbing a hill or wanting to smash the acceleration hard, the check engine light flashes and I lose speed changed 6 & 3 coil, not sensor on exhaust.

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He loose speed

Posted on Apr 23, 2015

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Posted on Jan 02, 2017

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SOURCE: no acceleration,audi 1.8t,runs like no boost

have you tried cleaning out the throttle body as i had a similar problem and this worked

Posted on Nov 29, 2008

danielson57
  • 108 Answers

SOURCE: 1998 Mercury Grand Marquis. Check Engine light on

is not ford,driverside front close to rad #1,and then2,3,4 [same side]and pass. side front 5,6,7,8 [if only 6cyl you have 123and 456?

Posted on Dec 12, 2009

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jgwhomeequip
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SOURCE: engine sputters when accelerating to speed limit

Check your EGR valve, IAC valve, fuel pressure regulator, fuel pump, fuel filter, spark plugs and spark plug wires

Posted on Jan 02, 2010

  • 4 Answers

SOURCE: 1992 pontiac grand am no acceleration, a rough idle (engine miss)

Does it have the 2.3l Quad 4 engine? If so replace the plastic piece that the coils go into, they go bad and leak spark to the cam towers and then you get a nice one or multiple cylinder misfire.

Posted on Apr 30, 2010

  • 122 Answers

SOURCE: ford focus 1.6 zitec petrol, engine warning light

try the air filter first and the intake.the spark plugs then and after all go to a garage for checking compression timing and the head gasket.

Posted on May 28, 2010

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1 Answer

When climbing hills and the transmission shifts down the service engine light flashes on and off. I also start to lose power as I'm climbing the hill. Whats causing this?


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I have a 1998 Mercury Grand Marquis rough idle, smelling gas first few minutes after I start my car. My car is also flashing engine light sporadically and losing acceleration.I recently changed spark...


flashing light most always means missfire.
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you really need a code reader and find the trouble code .
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My 1998 jeep grand cherokee 4.0 dont like to climd up hills it goes realy slow


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Runs rough when idling, even worse in drive, and nearly cuts off in reverse. Loses power climbing a hill.Is not running hot. Oil and trans fluid look good. Sometimes "service engine light is on". Changed...


I would perform a compression test on all cylinders if you've already changed your plugs and wires. This willtell u if u have ay mechanical problems with the engine. Also even tho you've changed your spark plugs and wires did you check your injectors or coil packs to ensure they're good. A problem with either will also cause misfires.

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1998 Mercury Grand Marquis. Check Engine light on and codes p0305 and p0306 Means cylinder 5 and 6 misfire detected. I need the firing order so I can check the coils. Thanks


is not ford,driverside front close to rad #1,and then2,3,4 [same side]and pass. side front 5,6,7,8 [if only 6cyl you have 123and 456?

Dec 12, 2009 | 1998 Mercury Grand Marquis

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What causes a 1998 grand caravan 3.3 liter to lose speed climbing a hill with the cruise set but it will hold the vehicle back going down a hill


you have higher torque need when pulling the vehicle up hill but less going down because it does not require as much power to hold your van back. Hope this helps

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No acceleration,audi 1.8t,runs like no boost


have you tried cleaning out the throttle body as i had a similar problem and this worked

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