1991 Camry Fuel system

My Camry died on the freeway over the weekend...it is not getting fuel, is there a way to check the fuel pump relay? Besides the relay or the fuel pump is there any other troubleshooting I should be doing?

You didn't post your engine/year. How do you know it's not getting fuel? Testing the fuel system is fairly extensive and not good to do on a forum. You should get a Haynes manual which describes in detail how to test each component. Could be fuel pump, even if it works, pressure regulator, fuel filter, relays (EFI main, Circuit Opening), fuse (inspect). If pump works you will need a pressure tester.

Thanks for the response...Its a 91 camry with a 4 cyl 2.2 auto.  I pulled the fuel line from the entrance to the EFI and turned the car over..No fuel, I guess I'm trying to eliminate all possibilities before I have to drop the fuel tank.   

I think the pump is accessed from above, in the trunk. Take a look. You could disconnect the pump wires and attached a test light to the wire leads, turn the key to ignition and see if the light goes on. That will tell you if all the fuses and relays work. listening for the pump from the trunk will also tell you if it's working. 

Thanks you've been a great help...One last question..Do you know where the fuel filter is located?  It does not seem to be under the car?

Check under hood on DS between trans and inner fender closer to firewall. I doubt it would have plugged all of a sudden. You should have noticed poor top end performance first when fuel demand is highest. But it's a good idea to replace as I have found not many people service them on a regular basis. If it hasn't been changed in a while you will find the banjo bolt tough to get off. You'll need a backup wrench with a helper as well.

Thanks..I found it and you are right its tough getting off...When I crank the car it sounds like fuel pump is working so I'm wondering if the fuel line isn't plugged somewhere along the line as the car is old and there could be alot of junk in the fuel tank.

Hey Pedro..I found out it is not the fuel pump or fuel filter...Changed the plugs, cap, rotor, wires and I am not getting any spark..any ideas?

heres a new theory, your alternator is busted.

I did ask how do you know if it's fuel
I'd suggest getting a Haynes to get troubleshooting procedure. No need to just replace parts without knowing if they're bad. Could be coil?? 
 
 

BINGO..Yes it was the coil, that was our last resort..but the car fired, thanks for your help and suggestions!
 
Peter

OK...Now that the car will start, it won't idle without keeping my foot on the gas...Any suggestions?

Now that the car will start it won't idle without keeping my foot on the gas...any suggestions?

Pedro...If you are out there....Since I have replaced the coil I am having issues with the idle..It dies while idling...Low RPM's..any suggestions on what it might be?

I would first see if it will idle when warm. That could tell you if a temp sensor is bad. Try to keep it running long enough to fully warm and see how it idles. Bad idle could also be caused by leaking EGR valve. That can be cleaned. I understand that these throttle bodies also get dirty. You can spray some cat safe carb cleaner into the square hole just inside the TB opening as well as around the butterfly valve. If this works then you may not have to take off the TB to clean it - if that is the problem.

Thanks...It does not idle when warm or cold...So I will try the EGR and TB cleaning.

Also check for vacuum leaks.

Well Thanks for all the help Pedro...It did end up being a leaky EGR valve..I changed it and it runs like new..Although I changed alot of parts throughout this that didn't cause the problem  ie: plugs, wires and dist cap I figured that they will need changing soon anyway...SO it ended up being the coil and EGR not the fuel pump!!  HAHA..You were right..Thanks again for all of your help.

Glad to help. Just FYI, I have never replaced an EGR, just pulled them and cleaned them. It is a pain though as I find you need to use mechanical action as well as chemical cleaner. Access to the valve seat is always a problem. But if you need to get back on the road quick and $ is no problem replacement is the way to go.

Replaced the EGR and it passed the NOx part of the emissions test which it had previously failed...Now it flunked the HC test..Go figure, the HC was fine last time.

I'm no emissions expert. If there is a forum member that is they would be best to get an answer from. Which test did it fail, idle or 2500rpm?  When analysing emissions you need to know the relationship between all the gases, HC, CO, NOx. High HC is unburned fuel. Is your idle smooth? Could be O2 sensor or catalytic converter, or misfire, even dirty air filter. This may be one you need a tech for.

check your pvc valve. high HC is caused by a clogged pvc valve amung other things.
when you remove it, shake it and it should rattle, as there is a small ball inside. If it doesnt rattle, then you know that's bad. A new replacement is real cheap.

The HC looked highest when the car was at higher speeds and lower at higher speeds..91 Camry 4cyl do not have a PCV valve

The funny part about this is when it first got the emission test the NOx failed, after replacing the plugs, wires, dist, rotor and EGR valve the NOx was fine and the HC is high.  I used Premium gas before the first test and regular before the second test..any coincidence there?
 

Hey Pedro, one of the items on the website you gave is adjusting the ignition timing...How is that done? and where is the adjustment screw?