Last post on Jan 22, 2003 at 2:08 PM
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Ford Mustang, Engine, Coupe
Jan 06, 2003 (8:27 am)
The intake manifold in my '96 Mustang cracked while the dealer was performing routine maintenance - they covered it under recall. 100 Miles later, the engine "blew". The dealer found a stuck valve in #5 and told me that I had to either pay them $3250 for new heads or $5000 for a new engine! After consulting with some knowledgeable friends, I confronted the dealer and had them admit that I didn't need new heads or engine AND that they needed to check to see if debris from the failure & replacement of the manifold caused the engine failure. They pulled the head and found debris and I am getting a new head for free. I have read other sites where the manifold failure has lead to other engine problems - be careful AND don't let the dealer bully you into bogus repairs!
#10 of 12 composite manifold
Jan 06, 2003 (4:56 pm)
what year did ford change the material of the intake manifold on the 4.6 engine??i thought they started with aluminum.
#11 of 12 How many are out there?
Jan 22, 2003 (11:50 am)
I have two 4.6's made since late '97. One in a Crown Vic with nearly 81k w/o any problems and a '03 Mustang with 680 miles. My questions are: What percentage of these engines have this problem and is there any why to see a crack coming before the leak occurs. I plan to keep the '97 for a winter, honey do and errand running.
It still runs and drive great.
incawedge1 (former TR-7 owner!)
Jan 22, 2003 (2:08 pm)
The intake manifold on my 96 GT blew at 65k miles. Reading these posts, the manifolds don't seem to fail at any particular mileage which is why Ford didn't issue a full recall. I looked though my records and found that Ford actually sent me notifcation 2-3 years ago about this potential problem.
Since the repair, the car has misfired on occasion. I decided to sell it and last Sunday was on my way to Carmax to get an estimate. The car misfired on the way and the check engine light came on. I took it back to the dealer and also asked that they make me an offer, just for grins. They diagnosed the misfire as a wet plug wire and then gave me an estimate using the Kelley Blue Book site. I told them thanks but no thanks - then the kicker - as they were diagnosing my car, someone backed into it and damaged the hood, headlight assembly and quarter panel! The dealer increased their purchase offer and I took the money and ran!