Why does my Chevy Tahoe Miss under load?

Certainly a miss under load can be a symptom due to fuel supply problem, just hard to imagine that it’s always the same cylinder that gets starved. Hope the pump really does fix your problem, but it wouldn’t surprise me if it’s a head gasket, intake gasket, or some sort of problem like a defect in the head on that cylinder.

What kind of engine does a Chevy Tahoe have?

My 99 Tahoe with 5.7 Liter Vortec has had the same problem (rough idle at low RPM only when warmed up) for the last few months.

What should the fuel pressure be in a Chevy Tahoe?

When it is running, fuel pressure stays constant at 54 psi, but again once when shut off it bleeds off down to 30 psi. I have read that the fuel pressure needs to stay within 5 psi for 5 minutes or there is a leaky injector or a fuel pump check valve.

What to do if your Chevy Tahoe misfire?

The shields caused quite bad spark leak to engine ground in my Tahoe and I fixed this by replacing spark plug wires with racing wire set that does not require use of the heat shields. I bought Taylor wire set for $75, which is about the same price as dealer asks for the set of garbage they use, which you can get for $25 at car part stores.

How to tell if your intake manifold gasket is leaking?

Loss of Acceleration: You will get another sign when you accelerate your car. Step the gas pedal down and you will notice the power loss of acceleration. You can’t drive your car properly as before. Acceleration will stop suddenly after getting a small amount of power. Or, Irregular acceleration will be the sign of gasket leak. 4. Vacuum Air Leaks

My 99 Tahoe with 5.7 Liter Vortec has had the same problem (rough idle at low RPM only when warmed up) for the last few months.

What causes a vaccuum leak on a Chevy Tahoe?

The hoe is having the same issues its been having with the tuned pcm, but with the stock computer now. I unplugged the MAF, the problems went away. So i replaced the MAF, same problems. Im pointing to a vaccuum leak because of these stupid intake gaskets. Any ideas? check front and rear, leaks were notorious on those.

What causes an intake manifold gasket to fail?

An overheated engine is another reason of the failing intake manifold gaskets. Continuous coolant leaking is the cause of overheated engine. In every time you do not appear the coolant to be leaking. Sometimes coolant will not leak in the intake manifold gasket, directly go to the intake manifold. It causes to overheat the engine.

How can I tell if my intake manifold is leaking?

arrow-circle-right Just touch on the coolant. If there is any leak you can feel some oily thing like soap or shampoo. After confirming the coolant leak, you need to find the location of leaking. If the coolant is leaking out through the joining point of the engine and the manifold, then it happens only for the damaged gasket.

What kind of oil does an intake manifold leak?

Intake manifold gaskets are known to leak engine oil or coolant. our leak wasnt oil or coolant but air.

Are there any misfires on a Chevy Tahoe?

The scan tool I used did show a few miss fires on the other cylinders during different times but just a couple compared to the thousands on #4 pulling a hill.

Are there any problems with the Chevy Tahoe?

Also please check out the statistics and reliability analysis of Chevrolet Tahoe based on all problems reported for the Tahoe. The contact owns a 2019 Chevrolet Tahoe. The contact took the vehicle to a tire shop for regular maintenance, and was informed that the passenger’s side strut was leaking and had seized.

What makes the 4WD light come on on a Chevy Tahoe?

The connections within the 4×4 selector switch on the dash go bad and cause the Servvice 4×4 light to come and occasionaly cause unwanted switches from 2wd to 4wd and vice versa….pick up a new switch…$50 and 10mins of install time and the problem is fixed Service 4WD and system stability disabled light come on. Currently working on a solution.

When did the suspension on my Chevy Tahoe fail?

Failure happened around 75,000 miles while traveling on the interstate and is a very common failure among the Tahoe, suburban, and yukons. Gm has failed its customers by not covering the defective suspension under these vehicles. This will be the last gm vehicle that I purchase, I have had nothing but trouble from this car.

Why does my Tahoe say service 4WD?

Obviously there is something wrong as it still says service 4WD. Z71 Tahoe transfer case makes noise when going down the road. Vehicle jumped while at stoplight, like someone bumped into me. Lifted rear axle,put into 2wd ,while tires start to turn loud noise coming from transfer case and klunking sounds.

Why are the brakes on my Chevy Tahoe not working?

Sometimes the brakes seen to be sluggish ,all this happen on a trip to the mountains. Tl the contact owns 2015 Chevrolet Tahoe. The contact stated that while driving at an undisclosed speed, the vehicle started to bounce and was unable to be driven safely.

What was the mileage on my 2015 Tahoe?

The failure mileage was approximately 77,000. We own a 2015 Chevrolet Tahoe ltz and at 85,000 we had to replace both the front and rear shocks due to total failure. We paid a total of $3,200 for these repairs, as this was not covered under the power train coverage or our extended warranty.

Where is the lower intake manifold on a Chevy?

The lower intake manifold is the tricky part. You have to jack up the motor and remove the passenger-side motor mount in order to remove one of the bolts from the intake manifold. The power steering reservoir is bolted to the block right over one of the bolts to the lower intake manifold.

What does open loop do on Chevy Tahoe?

Open loop is used by the pcm to allow the engine run cold untill the O2’s and engine water temp come up to temp. It will not use the O2’s to determine spark and fuel tables.

What is next code on Chevy Tahoe misfire?

Looked at the plug (#5), it was black and sooty, so i swapped the cyl 5 plug with the cyl 1 plug just to see if it was the plug. Sure enough, next code was a p0301!