Mercury Grand Marquis
Check Engine Light
Dodge Dakota
Lexus LS

Why does 1988 grand marquis hesitate when you accelerate hard on the gas and the check engine light comes on?

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Wiki User
March 02, 2011 8:12PM

I had this issue my self with a 89 try loosning up the

distributor turn it one way a little start it up and keep doing

this till it gets better or worse.

"Answer" id="Answer">Answer

Could be a lot of things. I'll make some assumptions, first that

the car runs fine otherwise, and maybe has a slightly rough idle,

and second that the codes being pulled do not indicate timing

problems.

Things left:

1) EGR system Idle Air EGR valve Blocked EGR ports on throttle

body plate

2) Bad failing fuel injectors.

3) Torque converter lockup bad

What do the codes indicate?

"Answer" id="Answer">Answer

Take to Autozone for OBD2 check.

May be air mass flow sensor, clogged catalytic converter. Dirty

fuel filter will cause dirty injectors and clogging of catalytic

converter.

AFTER ALL OF THIS IT WAS A RELAY RIGHT UN THE HOOD ON THE RIGHT

SIDE JUST HAD TO CLEAN IT.


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