This is my first post. Have done searches and haven't found anything exactly like this but close. I have a 1987 camaro with the 2.8L fuel injected v6 in it. It has a general loss of power especialy in first gear and low RPMs. It idles smoothly and isnt rough when accelerating just pulls like I am in a truck that is overloaded. after I get to 40 MPH it will start to get it's normal power back. The exhaust was quiet but when this started it now sounds like someone put a resonator pipe on it. My Dad and I have checked the fuel delivery and replaced the fuel filter, ignition coil, and spark plugs. Have checked and cleaned the distributer cap and rotor checked and replace several bad plug wires. Timed it. Checked and cleaned the egr. any ideas would be greatly apreciated. Also wonder if it might be something in the exhaust or if there was something else I might be missing?

 

Clogged Injectors?

Or extremely Clogged Catlyctic Converter

 

well the cat was clean. I finaly got the cantankerous old thing to cough up her codes. was a 34. ran though the diagnostics and the MAF sensor is dead. will need to get the injectors cleaned as well I guess.

 

Do not buy another MAF sensor without checking the current out before. In so many cases, it only needs some air to remove dust or there is a short in the wiring or a burnt fuse. In my case, I changed the Burn off relay (10 bucks) and checked the wires to see if there was any problem. Do not pour or touch anything inside the MAF sensor, just get rid of dust by using air.

 

2.8s don't have Burn-off relays, btw. Just MAF relays (would be what you changed). Burn-off relays are reserved for hot-wire MAFs. The V6 MAFs are frequency film.

 

Beat me to it!

 

any junk yard would have them just tell them you want the plastic intake for a 2.8 camaro its like 5- 15 bucks
i got my dual snorkle on ebay for 14 + shipping
and it came with the maf
but i only use it to fill the gap from the intake to the "rubber tube " dont know what its really called lol

 

Oh, and welcome to TGO!

Did you disconnect the EST connector before setting the base timing? If not you're likely running 15-20 degrees retarded.

EDIT: or, reading further into the thread, yeah, a broken maf would cover it too

 

MADDONE. if you would let me know what you found. im having the same problem with the same car. done every thing you did.but also noticed low vacuume. see my post (vac help). my maf sensor is good. thanks

 

My thoughts also.

Try and bump the base timing up to 13* then reconnect the EST and reset the battery. You'll gain lowend but if it does drop off at top end then back it down a degree or two. Factory base timming is 10*

 

Thanks for all the help will run though it and see what I come up with. my neighbors thought I went and got one of thoese tail pipes for it lol. will re do the timing this weekend and see. got the code 34 unhooked the maf cleared the codes started the car and it ran nice and smooth got the SES light and pulled the code was 33 so I think the maf is dead. It runs so nice without it but still doesnt have the power it use too, low though that was lol. Was thinking the injectors are cloged cause the plugs on one side were realy dirty with carbon. the previous owner replaced the stock cat with a highflow one witch we noticed when we dropped it. It has an aversion to overdrive even when it was normal so that may be the cause. I use to just wait till I was on the highway and crusing before letting it drop in to overdrive.

 

You say the tranny or OD is acting funny. You sure the motor has lost power or maybe its the trans not getting the power to the ground???

 

HEHE the overdive isnt messed up. I just dont like the way it works. The transmision was replace 8 months or so ago and both the old and new one have no acceleration in overdrive. If I want to pass someone I would downshift and then it would be fine.

 

Check for an exhaust mainfold leak or bad valuve. My old pickup had a manifold leak in it and it burnt out a couple of valuves. Causing loss of power, bad gas milage, and sounding like it had pipes.

 

hey guys hope you dont mind me jumping in ? i also have 3 plugs on drivers side almost fouled and 3 on passanger side look good i did notice an exhaust manifold leak on the side with good plugs ?could this cause loss of power and low vac.

maddone have you checked your vac? what readings are you getting at idle im only getting 13.

 

didnt find any exhaust leaks. I dont have a vacuum gage but did check and fix any vacuum hoses that looked bad.