my 87 br2 starts out running fine i drive maybe five miles and it goes from 70mph to 15 mph i figured out its getting to much fuel but cant quite figure out why I've checked the vacuum/ emission line there all routed correctly just had the timing done i just bought the truck and I've put too much in it to quit know any suggestions

 

Welcome to FTE first off.

Have you pulled codes yet? If you don't have a code puller you can check Ken00's sticky about tech information. Look for the link on pulling codes.

 

In additon to pulling codes, check the vacuum line to the fuel pressure regulator (FPR) for gas and check the fuel pressure. Gas in the vacuum line means bad FPR.

 

ive check the vacume lines and just replaced the fpr today so now im lost

 

If there isn't any fuel in the FPR's vacuum line then pull the codes.

 

any suggestions on a good code reader for this thing

 

No matter how much you spend on a code reader, you can't get anything more out of that vintage EEC-IV computer than you can with a paper clip and a test light. As noted above, see Ken00's tech info post for instructions.

 

I bought a code reader from Walmart for $30 with the LCD display and it has a memory so you don't have to write them all down.

 

OK i got a code reader doesnt have a fancy display but it should work hope fully i get time to do it tomorrow if it stops raining so i get this burden of it not running off my shoulders

 

finally got to pull the codes they were

koeo 31,41,53,63,29
koer 21,22,12,31


any help with this im thinking my o2 and tp sensors but not for sure. its a new o2 but tht dosnt always mean its working so ill take it back to a.z. and swap it out cant hurt nything but time so hopefully it fixes the problem and can move on if it dont its gunna get park and im getting another vehical monday but i would relly hate for it to sit like that thing has givin me a bigger headach then i needed right now but if you got any input on this let me know
btw how do i clear my codes

 

Did you check for gas in the FPR vacuum line?


For the....

21, was the engine up to normal operating temperature?

22, check the electrical connection to the MAP and the vacuum line.

12, is an IAC problem, was the ECU able to control the idle speed when you were running the KOER test.

31, is an EGR code, I don't think this would cause a rich condition. I can send you the pinpoint test for this one onxce youo clear the others.

 

i don't know how to clear the codes and i took the egr off it is clogged i also found that its leaking and no the ecu want able to control the idle speed but i have noticed that when i unplug the iac the rpms drop to where there supposed to be at normal operating temp and the engine was at normal operating temp it was low on coolant i was going to get a new egr tps and o2 sensors tomorrow if there all available at az because i need to fix it all for emissions anyway so but if i can clear the codes then i can narrow it down some more and i would greatl appreciate the pinpoint test is there and pis available to show the vacume line routing becides the the diagram under the hood hope fully after i get taxes i can pay a tech to tune it up a little bit

 

i did check the new fpr for gas in the line

 

To clear the codes you can follow the procedure in the link, pulling eec-iv codes, in the tech info thread at the top of this forum or disconnect the battery for 15 minutes.

Once you have that done I would take it out for few 15-20 minute trips and pull the codes again.

The idle speed should drop below normal when you disconnect the IAC, do you have any vacuum leaks or did someone adjust the throttle plate stop screw?

If you were low on coolant that could have caused the code 21.

Since you found an EGR proble it can't hurt to replace parts there but I would hold off on anything else until you get a fresh set of codes.

 

im finnaly fed up with it i sent it to the shop today ill let u guys know what it turns out to be when i know