I'm assuming you just bought this car used... you said there are no check engine light on. Have you hooked up a scanner anyway? It does happen that people selling used cars disable the CEL bulb.
2011 buick enclave 3.6l cx awd misfire
No check engine light,
Symptoms :
Misfire
No power
Staled after refueling but after I replaced the purge valve
Under heavy acceleration it has trouble getting past 3200 rpms
Fuel gauge moves around an 1/8 or 1/4 at a time
Cranks about 2 sec before starts
Recently replaced :
purge valve
Egr valve
Valve cover gasket and plug seals
Plugs and coils
Intake hose
Air filter
More info: vehicle sat for over a year but I've ran 2 tanks of gas through it since I've had it.
I'm thinking it's maybe fuel related but Idk. When I checked plugs the bank 1 plugs were swimming in oil but I've since fixed that problem. Timing chain seemed OK from mild inspection. Sometimes it seems to run good until it warms up which makes me think clogged cat but I'm tired of guessing and decided to join this forum and ask for help. Thanks in advance
Symptoms :
Misfire
No power
Staled after refueling but after I replaced the purge valve
Under heavy acceleration it has trouble getting past 3200 rpms
Fuel gauge moves around an 1/8 or 1/4 at a time
Cranks about 2 sec before starts
Recently replaced :
purge valve
Egr valve
Valve cover gasket and plug seals
Plugs and coils
Intake hose
Air filter
More info: vehicle sat for over a year but I've ran 2 tanks of gas through it since I've had it.
I'm thinking it's maybe fuel related but Idk. When I checked plugs the bank 1 plugs were swimming in oil but I've since fixed that problem. Timing chain seemed OK from mild inspection. Sometimes it seems to run good until it warms up which makes me think clogged cat but I'm tired of guessing and decided to join this forum and ask for help. Thanks in advance
1 - 8 of 8 Posts
My mom bought it new and drove it until last year. I just bought it off of her recently and it had been setting since she got her new vehicle early last year.
Well... we can assume your mom didn't disable the CELMy mom bought it new and drove it until last year. I just bought it off of her recently and it had been setting since she got her new vehicle early last year.
.
Yeah! For sure lol also it was on when I bought it for the purge valve. I'm going today to rent a fuel pressure gauge. I'm thinking it's fuel related because I've checked for vacuum leaks, replaced plugs and coils. That will help me cross one more thing of the list. Clogged cat or faulty O2 sensors are after the fuel.
I did a fuel pressure test and was getting only 40psi so I changed the pump. It's running better but i still feel like it's pretty sluggish on acceleration. Still no cel
That it’s running this poorly and not setting any codes has me confused. I’d definitely scan it for codes even with the light being off because I don’t trust that light. With a better scanner you can also look at misfire counts and the high and low pressure readings. I’m still stuck on “struggles to hit 3200 rpm under load but isn’t throwing any codes”.
Bluetooth scanner, check High Pressure Fuel Pressure, cat temps, O2 voltages. Misfires.
Run Techron through tankful of gas, skip one and then another bottle of Techron. Always use TopTier Fuel. Make sure oil level is good. Check VVT screens.
Run Techron through tankful of gas, skip one and then another bottle of Techron. Always use TopTier Fuel. Make sure oil level is good. Check VVT screens.
1 - 8 of 8 Posts
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