Question about 1997 Toyota RAV4

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I have a 1997 rav 4 .it will crank overlots of fuel pressure 45 lbs .spark is not a problem prime it and it will start everytime.the power to the injectors is only there for a split second because i had a noid light installed it will light up for a second and no start please help me this is confusing also tried a ecm that i know that worked thanks

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I had same problem on 1996 gmc. It would start great and run great if you primed it with gas. The fuel pressure was at 55lb. It turned out itwas the fuel pump. The injectors on my truck needed more pressure to start but after starting this was enough pressure to run. I ran my truck for 4 months before the fuel pump quit alltogether. Once I changed the pump it started perfectly. Hope this is helpful. Sudbury, Ontario, Canada

Posted on Jul 23, 2010

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1 Answer

Why isn't it firing?


With engine cranking, do you have spark at the spark plugs? Do you have fuel injector pulse? I can't tell if that fuel pressure is initial prime or not? The initial prime doesn't need rpm signal, no cranking, after that the computer needs to see rpm signal. I saw what you replaced, I'd have to check wiring circuits before replacing anything.

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1996 bronco starting


Need to find out if there is spark while cranking first. Check at the coil wire first then at a plug wire.If there is spark at the coil and not at the plug the fault is the rotor or dist. cap.If there is no spark at all,suspect the ign. module. If there is good spark move on to the fuel pressure check.It needs about 40 lbs. to run.

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My 1997 chevy tahoe is hard to start, I changed the fuel filter and spark plugs but it still takes a lot of cranking before it will start


the pressure regulator may be leaking. pull he vac line and see if its wet. wet is bad. Also these fuel pump connectors are known to overheat from poor connections. Do a search on gm fuel pump repeat failures and overheating connectors. Also the fuel pump could be leaking down so the line needs to be primed. Try cycling the key about 3 to 5 times before you start it. The pump will prime for 3 seconds each time before shutting off. If this helps the problem is the fuel pump.

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1997 chevy blazer getting fuel and spark but not starting, only backfiring through carb.


You need 3 things.
Compression
Good hot blue spark to all plugs.
Good gasoline and proper fuel pressure. 63-64 lbs.
If you have all 3 then move on to injector pulse to all injectors.
I think each injector is on a separate driver on that one.
Check for pulse to all of them.

You may be weak on fuel pressure . even a couple of lbs low on a cold start will cause a no start.
Double check cold start cranking fuel pressure. If under 63-62 lbs you have problems.
one test is to give it a squirt of carb cleaner not starting fluid. If it starts then you have a fuel pressure problem.
Run the full fuel pressure test and post back pressures.
Here is the guide lines on testing.
Hard to start cold.
Check cold start fuel pressure.
Check engine running fuel pressure.
Check engine running on the road fuel pressure.
Then shut it off and watch for fast leak down.
Pinch off at rubber part or block off return line and check full pressure.
Later V6 and V8 gm engines should have 60-66 fuel pressure.
Cold start should be 64-65 lbs of pressure.
If you do not have full fuel pressure on a cold start the injectors will not squirt fuel. Do not leave home without it.
Engine running should be 60-66 lbs pressure depending on engine load.
Full pressure with return pinched off should be 75-85 or more.
And if it has a fast leak down after shut off you have a leak.


The 75-85 is only a check on the capable full pressure of fuel pump.
If you can not find the rubber return line check full pressure by plugging return line or just or the true full pressure can be taken direct at the end fuel filter.
What are the pressure readings that you have when done.
What are your cold start pressure readings?
Post back what you have. Good luck

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2004 Toyota Rav 4.....I change a battery out for a new one now the car doesnt start, it cranks but thats all it does all the lights and electronic functions work but doesnt start.


you have to check for a burnt fuse , maybe an ignition, fuel pump fuse, hear the pump starting, checkfor pressure at the fuel rail, if ok, check for spark going to the spark plugs if there is not it can be a faulty crank sensor

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1 Answer

No start-95 safari


Could be fuel pump, is the pump running when you turn key on, you should be able to hear it. You are likely going to have to take it to someone with a pressure gauge to make sure it is getting proper fuel pressure. Fuel pumps commonly go on these vehicles

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4 Answers

Engine wont start without priming with gas first, then runs well


i have the same problem on a 98 jimmy 4.3 4x4.
i replaced the fule pump and have good pressure.
new wiers & coil (good spark) no MIL & no codes.
will only start when primed. it will run & drive all day
with no problems.
but once it has been turned off (warm or cold) i will
have to prime it once again to start it.
i have another engine that was in it before it spun a bearing.
it ran fine so i know all parts are good.
i swaped the mass air flow and throttle body but i still have
to prime it everytime to start it. am i forgetting something?
should i swap out the intake with the injectors?
any help would be sweet. thanks.

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3 Answers

1998 olds bravada 4.3 v6 vortek 4 door 98000 miles we got not prime from the fuel pump so we switched the ignition switch, now we have prime but no crank, battery tested at 12.4 and the car has fuel, the...


there is a fuel pressure regulator on the back of your injectors, change it, its a 13 dollar part, after you do that, buy a fuel pressure guage, hook up the pressure guage, turn the key to on possition, prime the like a couple times like you would do with a new pump, check the pressure it should be any where from 58 LBS to 62 lbs of pressure in the like, if its any lower the 58, you need to change your pump, with out 58 lbs of pressure the injectors dont get the correct pressure in each purge, hence the crank with no start.. you seem to know enought about pressure n stuff like that so u should get it

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1 Answer

Toyota rav4 1997 after i drive it about 1 hour it began to turnoff end difficul to start ,i wait 15 minutes after its ok


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