'96 Avalon XL 330k miles - won't start all of a sudden
Well... My mother-in-law bought this car new in '95. I took it over at 230k miles. It now has 330k miles. I drive it about 100 miles per day. I left it parked at work for about a week while I was gone on a business trip and when I get in it to crank it to go home that day... it spins over but never cranks. I immediatly thought "fuel pump". Heck... it was factory original and the car had 330k miles. I had a guy put me a new one in (Bosch). It didn't crank right away... we fiddled with all the fuses and relays.... then unhooked the battery.. .then rehooked it back up. Re-set the &^%$%^ alarm... and it cranked. I drove it for about 2 weeks every day... no issues. I travel off for work last week... car sat for about 6 days...... get in it to leave this afternoon.... it did it again..... turn over freely but no start. I bought a FP gage, but can't find where there is a test port.
Bottom line is I "ASSUMED" it was the fuel puimp. Now that it has done the exact same thing again.... I am wondering what is causing the issue.... fuel or spark??
Anyone else had a similar issue?
I thought I would first verify if I was getting power to the FP ... then check for pressure in the line going to the fuel rail....and go from there....
Any ideas?
__________________
2000 F250 CC SWB 4x4 PSD - 160k miles
1996 Toyota Avalon XL - 326k miles
1987 Buick Grand National - 160k miles
1966 International Travelall 4x4 with 454 BBC - ?? miles
You can check to see if the fuel pump is working by turning the key to the on position and listening carefully you should be able to hear the fuel pump pressurize the line.
With the car doing the same problem both before and after the fuel pump replacement I wouldn't think it is the fuel pump, but it would be good to verify that is not the problem. There should be an access port on the fuel rail to hook a pressure gauge and make sure the pressure is within specs. Sorry I don't have those at hand.
Your problem could also be spark related, either weak coil packs, wires, plugs, or a crank or camshaft sensor. I would check these items first and go from there.
The Following User Says Thank You to fourwheeler For This Useful Post:
You can check to see if the fuel pump is working by turning the key to the on position and listening carefully you should be able to hear the fuel pump pressurize the line.
With the car doing the same problem both before and after the fuel pump replacement I wouldn't think it is the fuel pump, but it would be good to verify that is not the problem. There should be an access port on the fuel rail to hook a pressure gauge and make sure the pressure is within specs. Sorry I don't have those at hand.
Your problem could also be spark related, either weak coil packs, wires, plugs, or a crank or camshaft sensor. I would check these items first and go from there.
Will do... I bought a Haynes manual this morning. $25 ... ouch! I thought I would look at the electrical diagrams and see what made the fuel pump come on.... and trace that circuit out if it is in fact lack of fuel pressure.
I would not suspect weak coil packs.... because it was running fine.. then all of a sudden... no-start...... then worked fine after fuel pump replacement for 2 weeks... then the same thing again.
If it is not fuel related... my bet is cam sensor or crank sensor. I would bet if either one isn't happy.... either it won't fire... or won't pulse the injectors.... or maybe both.
__________________
2000 F250 CC SWB 4x4 PSD - 160k miles
1996 Toyota Avalon XL - 326k miles
1987 Buick Grand National - 160k miles
1966 International Travelall 4x4 with 454 BBC - ?? miles
Apparently after '93, (manual also was for Camry), Toyota didn't put a "FP" pin in the diagnostic connector, so you must pull the cover plate on the fuel pump and put 12v to two pins once the connector is unhooked from the fuel pump. I did that, but never heard the pump cut on. I followed the suggestions in the manual... and checked a couple fuses it said... and then the EFI main relay... well... it looks good..... just for giggles... I swapped it with the relay marked "FAN 3". Car fired right up.
Guess mine was the EFI relay. I haven't found a replacement relay locally yet (Bosch) but may have to order me one.
__________________
2000 F250 CC SWB 4x4 PSD - 160k miles
1996 Toyota Avalon XL - 326k miles
1987 Buick Grand National - 160k miles
1966 International Travelall 4x4 with 454 BBC - ?? miles
swapping that relay was the most cavalier thing i've heard of! you ran a really good chance of frying... SOMETHING! you should go to a casino, now!
now your fan won't work, btw...
He dude, take it easy!
What could happen if a relay was not working. IMHO it would either be stuck open.... or stuck closed. I can't see a hole lot of harm from swapping identical part number relays as a way to check something.
__________________
2000 F250 CC SWB 4x4 PSD - 160k miles
1996 Toyota Avalon XL - 326k miles
1987 Buick Grand National - 160k miles
1966 International Travelall 4x4 with 454 BBC - ?? miles
What could happen if a relay was not working. IMHO it would either be stuck open.... or stuck closed. I can't see a hole lot of harm from swapping identical part number relays as a way to check something.
swapping relays is quick and easy way to confirm or eliminate a problem. ( as long as they have the same part number).
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1999 Toyota Avalon
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