Cadillac 4.5 Engine Reliability

Value for the money 45. The engine turned out to be very reliable having few issues.

Engine Info 4 9l Cadillac V8 Fieroaddiction Redux

But in my experience I have seen camshaft distributor drive gear wear allowing the timing to wander causing an idle float main bearing knocks easily fixed and failed intake manifold gaskets also easily fixed.

Cadillac 4.5 engine reliability. Reliability indicates how models have performed in the past providing the basis for predicting how the vehicles will hold up in the year ahead. Of course the HT4100 is out of this discussion because the newest one was made in 1987. Hopping in my TBI Eldo after driving the 90 around is almost agonizing when puttin the hammer down Seems like the PFIs have a lot more than the little they are rated for over the TBIs.

At 125 horsepower the 41-liter engine did a decent job of standing at least gently above the standard-engine fray. 996 to 1999 were more frequent. Also the intake manifold gaskets were much improved which decreased the likelihood of coolant getting into the oil and wiping out crankshaft bearings.

In fact they remain two of the lowest warranty claim engines Cadillac ever produced. Note that Seville then sold standard with the 57-liter diesel engine came with a 490 discount if you were to opt for the V6. Running Costs higher is cheaper 5 10.

The exception was that the 49s displacement was larger and power output was increased by 20 horsepower through a port fuel injection system. It was almost identical in every way to the 45-liter version. The 42 liter V8 engine GM RPO code LTA is an eight-cylinder dual overhead cam DOHC twin turbo engine produced by General Motors specifically for use in Cadillac luxury vehicles.

The 45 V8 has a lot of get up and go. If the transmissions held up better these cars would run to 300k and beyond. All Allantes had a 4-speed automatic transmission which gained electronic controls for 1993.

Cadillac installed a new Northstar twin-cam 32-valve V8 into the 1993 model. The engine is the result of a new clean-sheet engine design as well as Cadillacs first twin-turbo V-8 engine. Overall marks average of all marks 95 10.

The 1988 Eldorado still runs very good. The 4549 have a proven track record particularly the 49. It first launched on the 2019 Cadillac CT6.

They are responsive and provide adequate horsepower and tend to be very reliable and long-lived engines. Running Costs higher is cheaper 8 10. Meanwhile Alfa Romeo sits right above Cadillac in terms of reliability with the Giulia as its least reliable according to Consumer Reports.

The more powerful Northstar has the curse of the headgasket bolt failure. The 49-liter V-8 was developed as a larger version of the 45-liter Cadillac engine used in the 1987 to 1993 two-seater roadster Allanté. The HT engine line would see a displacement bump to 49 liters before being replaced by Cadillacs Northstar V8 after 1995.

The major improvement was roller cams and much more power. Overall marks average of all marks 95 10. These V8 engines were the only engines used by Cadillac for almost the next decade until the Blackwing V8 engine was produced in 2018.

The suspension is quite soft so it usually feels like you are accelerating faster than you really are. They are very reliable and trouble free engines perform very well and are very good on fuel. For me the engine has been very reliable.

Through the 1992 model year Allantes were equipped with a 45-liter overhead-valve V8 engine making 200 horsepower. Overall marks average of all marks 73 10. Explore the 2007.

In my opinion the TBI 45 was the most reliable engine cadillac made not the 49. The 45s 49s are very reliable. Running Costs higher is cheaper 8 10.

Once the Cadillac STS had the last Northstar engine it was replaced by the GM LS small-block OHV engine used in newer Cadillac models and using a simpler pushrod engine design that was considered to be more reliable and consistent. The cost of the repair is catastropic. The 45 and 49 are upgraded versions of the 41.

Shockingly Acura joins the bottom three this year. I must say though the extra kick in the PFI motors is well worth the minor extra potential problem areas. The Cadillacs built from 1988 and up had much improved 45 engines compared to the earlier 41.

But if we went back farther I would have to give my vote to the 472500 engines. This meant that if you ordered your Cadillac with the V6 you received a 150 discount on the car. The 45 incorporated all the upgrades of the HT4100s plus had a larger bore to allow for the greater displacement.

Perhaps most importantly the 45-liter engine was no longer branded HT as that moniker was considerably tarnished by the 4100s reliability issues. Rating breakdown out of 5. 91 of drivers recommend this car.

Cadillac High Technology Engine Wikiwand