12 problems related to manifold/header/muffler/tail pipe have been reported for the 1999 Chevrolet Monte Carlo. The most recently reported issues are listed below.
Tl- the contact owns a 1999 Chevrolet Monte Carlo. The contact stated that there was a progressing leak under the hood that was happening with no warning. The contact noticed a puddle of fluid and the failure continued. The contact stated that upon turning the key in the vehicle, it started smoking. The vehicle was inspected by the contact who noticed that engine oil was leaking onto the exhaust manifold. The contact later received notification of NHTSA campaign number: 15v701000 (engine) and was to schedule a recall repair appointment once the parts became available. The contact was unable to determine when the vehicle would be repaired. The manufacturer was notified of the failure. The approximate failure mileage was not available. VIN tool confirms parts not available. Dyd.
Tl- the contact owns a 1999 Chevrolet Monte Carlo. The contact stated that after turning the ignition key to start the engine an explosion occurred under the hood. The contact discovered that during the incident the intake manifold and the top of the engine were severely damaged. The cause of the failure was not diagnosed or repaired. The manufacturer was not notified. The failure mileage was 148,551 jft.
: the contact stated there was an odor coming from the vehicle. Upon inspection the dealer and independent repair shop determined the vehicle was leaking anti-freeze. The plastic intake manifold gasket was cracked due to heat from the engine and needs replaced with a metal gasket. While driving 40 mph, after the vehicle was inspected the engine stalled. The vehicle was restarted after cooling for an hour. The vehicle was not returned to the dealer or mechanic. Updated 06/07/2006.
I have just found out that my 3. 1 litre also has had the intake manifold gasket go bad. The car only has 57,000 miles. Like others here it is going to cost me $450 to get it fixed. Gm needs to step up and create a recall or at least pay to have a new gasket installed. It is my belief that it all stems from dexcool. I have known several people that have had or are having the same problem.
There is a fluid called dex/cool which is like anti-freeze. However, it eats away at the gasket. Consumer has had to have the gasket replaced. The consumer stated that the intake gasket was leaking. Loss of radiation fluid at 77000 miles.
Intake manifold coolant leak on 3. 1 engine, with a cost of $ 650. 00 for this repair. Seems to be a common occurence with all the 3. 1 liter engines. Maybe it's time gm stepped up to the plate, and took a look at this problem. No wonder imports are becoming more popular!!!.
At 31k intake manifold gasket and trans pan gasket are leaking according to Chevrolet dealership. Auto has the 3. 1 l. Engine. Dealership not overly concerned and this appears to be normal for a Monte Carlo. Initially the trans pan gasket repair was considered an owner maintenance responsibility rather than a covered extended warranty item. After speaking with dealership and advantage a 2nd time, it was determined that the repair was to be covered through the warranty. In my opinion, Chevrolet doesn't want to stand behind its product. I am very disappointed and will definitely never buy another gm product.
The vehicle overheated and stalled due to the manifold leaking coolant into the engine. The manifold was replaced. Mechanic said that the overheating of engine is almost a mile away from a fire.
Intake manifold coolant leak, happened to my 3. 1 engine, and to several of my friends, each with the 3. 1 engine. Each stated a cost of $ 650. 00 for this repair, seems this happens to all the 3. 1 liter engines, shouldn't Chevrolet own up to this problem? when it happens to a select few thats one thing, when it happens to all of then is it not a design flaw?.
Consumer states that intake manifold is cracked. Dealer notified.
3. 1 engine intake manifold gasket leak. This problem started just out of warranty and was able to keep the car going till now with stop leak. I took the manifold off and the gasket looks to be broken in four places. A friend of mine paid almost 500 dollars to fix the leak on his 3. 1 last week. Chevy says there is no problem. Just look on the net there"s thousands of people like us . Chevy case #1-12-2500234 started about 38000 miles used stop leak to keep it going till 80000 miles replaceing gaskets at this time chevy says there is no problem ya right.
The head gasket and intake manifold fails every 40-50k miles. Ph.