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Dick L
Guest
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 Posted:
Tue Dec 28, 2004 8:27 pm Post subject:
Merc Grand Marquis Check Engine light |
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93 V8, 135K miles, runs great, well cared for - but over 60 mph the Check
Engine light comes on intermitantly - bel;ow 60 all is OK. Ideas?
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WEBPA
Guest
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| Posted:
Wed Dec 29, 2004 3:55 am Post subject:
Re: Merc Grand Marquis Check Engine light |
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| Quote: | 93 V8, 135K miles, runs great, well cared for - but over 60 mph the Check
Engine light comes on intermitantly - bel;ow 60 all is OK. Ideas?
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Oxygen sensor or MAS.
webpa |
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Guest
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| Posted:
Tue Jan 04, 2005 7:49 am Post subject:
Re: Merc Grand Marquis Check Engine light |
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You need to determine the reason the light comes on by using a code
reader tool or scan tool. Common code under load is for EGR circuit.
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| Quote: | 93 V8, 135K miles, runs great, well cared for - but over 60 mph the Check
Engine light comes on intermitantly - bel;ow 60 all is OK. Ideas?
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