Car Questions
RepairPal is your advocate for car care advice and guidance

Replace defective plastic intake manifold

(1998 Mercury Grand Marquis)
in Akron, OH on April 25, 2011
I have a coolant leak at a crack in the intake manifold at the top-front of the 4.2(maybe 4.6?)Liter engine. The leak stopped when I put in a stopleak "mud" and held through the winter. Then it leaked after a 3500 mile trip coating the engine with a fine-coating of fine mud/dust. (I have a competent mechanic for whom I had the engine compartment pressure washed ... the motor is clean like new. The engine runs good.) What will it cost to flush the coolant and mud, then replace the intake manifold and refill coolant?
Displaying 1 answers & 2 comments
Popular Answer
on April 26, 2011
It's a 4.6L V8.

This is a common issue that at one time Ford offered warranty coverage for (not any more).

I believe all in you are looking at $500-700 for this job, depending on your labor cost, and using an aftermaket intake manfiold.

Hopefully your stop leak has not contaminated components that you did not want it to impact.
on April 26, 2011
Well the cost estimate made my heart stop, but like another mechanic posted: proper maintenance is preferablle and least costly than replacing an otherwise fine car. Thanks for the answer. The cost will be honest because I (and my family) have had him work on our cars for many years. He has always been fair, honest, and dependable. And the cars always last a looong time with his keeping the maintenance top-notch.
on April 26, 2011
A good relationship with a good technician is nothing to be taken for granted! Nice to hear.

Nothing you could have done, of course, with the coolant leak. It was a factory flaw and yours lasted years longer than many.

Good luck!
Get a repair estimate
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide.
Or interested in getting a repair? Find a Shop

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
This is a follow up to question i asked several days ago. 1999 chevy lumina car overheated with no warning, no white ...
My ex replaced my original radiator with one from ecology (the junkyard). its from a car that looked just like mine, ...
Didn't find what you were looking for?