here is the problem...idle is fine and will rev up as long as its in park but as soon as i put it into drive and give it gas it falls on its face and will not go. ??????

 

no help?....how about switching over to a carb setup? any body done that and have some part numbers...thanks

 

HI

Have you checked to see if the ECM is issuing any codes? I have the 82 Service manual and it has about 80 pages of trouble shooting flow diagrams. They are all related to a specific trouble code.

Also a better description of "it falls on its face and will not go" would be helpful. What happens to the RPM when you try to accelerate, does it increase, decrease or stay the same? If the RPMs increase and the car does not move the tranny could be burned out (had that happen to me on a Blazer with about 146k on it) or the brakes could be locked against the rotors or drums. Have you verified that the E brake cable is tight and the E brake releases when the E brake handle is released? O o r more of the sensors could be bad, such that the ECM does not realize that you are trying to accelerate so the timing of the injector pulses is left at the idle timing. The TPS sensor could be the culprit in this case.

Does the engine stall when you try to accelerate? If yes, pull the air cleaner and see what happens to the fuel spray from each injector when you advance the throttle. If the fuel flow decreases and the engine stalls you could have a clogged fuel filter. Do the throttle plates open up as you try to accelerate? Both plates should open the same amount.

See if you can pull any trouble codes, as that would help narrow down the cause of your problem. Post up any codes you may get.

Dave

 

thanks for replying...no i havnt pulled any codes, i dont have a scaner and i dont think the check eng light works since it never comes on. the rpms will go up to 1800/2000 when i push the throttle then drop down 300/400. kinda like a qudra jet bog but it never recovers. i did find a vac hose that was bad, repairing that made the car drivable but only if i feather the throttle. adjusted the tps and that helped some. both injectors seem to be working ok (a nice cone shape mist) and the throttle plates open together the same amount. im really thinking of going with a carb since fuel injection is way out of my ability. im thinking i should check the distrbutor to see if its advancing...maybe its froze up.

 

if it's falling on it's face under load, check the timing first.

 

You should read your car's service manual and see what it says. If that doesn't help, you should call a repair shop and get their input on it.

 

To check the Check Engine light, just turn the ignition switch to ON, but don't start the motor. If the light does not come on, it is burned out. Replacemnt lamp is 194, two in a pact for $2 ~ $3 at any parts store. Don't use the 194LL bulb. Chage it out and see if you can pull any codes. You do not need a tool, just a paper clip, know where the ALDL Connector (it is above your right knee partially under the dash, with a cover on it) is and how to decode the flashes to get the correct code.

Two mechanical items that may be causing your problem are lack of fuel under acceleration or a plugged exhaust.

When was the last time you replaced the fuel filter? It could be clogged if its been several years. Also the fuel pump could be going bad, especially it is the original one. Or the strainer sock on the pump could be clogged and restricting fuel flow into the pump.

As for the clogged exhaust, it is likely that the catalytic converter element has degraded and is resisting the exhaust flow. This results in a back pressure in the system which limits the power output and acceleration of the engine.

It is up to you to decide if you want to replace the TBI with a carb setup.

As for your problem, the best description there is for it in the 82 Service manual is "sluggish". There are aboth 12 different items to check for this condition and a service manual would be really helpful. Without the codes, there is no easy way to see which sensor(s) may be causing the problem.

So for a few bucks and a little time, I would replace the Check engine bulb and get the codes. See what the problem might be and then decide it you want to install a carb setup.

Dave

 

ok finely got a scanner hooked in and there are no codes...the guy running the scanner said it maybe the computer or just the programable chip...what do you think?

 

Attached are two pdf files I scanned from the 82 Camaro Service Manual. They are specific to the the TBI units furnished in 82-83.

Print them out and look them over. They give you the general items to check to verify if the ECM, PROM and Check Engine Light are functioning.

The first file is one page and tells you how to just test the EMC. However, the Check Engine Light must work for this to give you any useful information. Try it and if the Check Engine Light does not Flash code 12, see Chart 3 in the second pdf file.

In the second pdf file, the first page did not scan completely, but it is the page in the first file.

Just curious if you have checked the fuel filter and the cat converter as mentioned in my posts above?


Dave

 

ECM should /will hold a code for ECM and or prom. You really need that CE light. Proper functioning is ign on engini off it will blink then stay on. That tells you all is well with ECU and prom. A rapid blink with engine running or off for me is a bad or intermittant prom. No blink then on solid for me is ECU not running off prom or not seeing prom.

 

i have checked the fuel filter but not the convertor...not sure how i would do that without removal.going to see if i can get the check eng. light to work then go from there ....thanks