Australia Car

Australian car repair Issues? Ask an auto mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

I have 97 Toyota Prado with 3.4 L Petrol engine, It Starts…

Customer Question
I have 97 Toyota...

I have 97 Toyota Prado with 3.4 L Petrol engine, It Starts and runs for about 5 seconds and stops, I have replaced fuel filters low temp fuel relay, maf Sensor, Efi Relay, Cleaned throttle body, if I spray ethanol directly into throttle body when im starting it will run for longer until I stop spraying, I have applied direct power to the fuel pump and can hear it running and it still stops after the 5 seconds

Mechanic's Assistant: Are you certain it's the fuel pressure sensor that's in need of attention? What about the fuel rail? Have you checked it yet?

Im not certain of anything I had not got to the fuel rail yet

Mechanic's Assistant: What is the model of your '97 Toyota?

Vzj95r

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

Replace maf, efi relay , temp relay, cleaned out throttle body, replace fuel filter yes myself

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

I have googled the hell out of this and cant find a similar issue anywhere

Submitted: 4 months ago.Category: Australia Car
Show More
Show Less
Ask Your Own Australia Car Question
Answered in 1 hour by:
3/9/2018
AU Auto Mechanic: Matt, Engineer replied 4 months ago
Matt
Matt, Engineer
Category: Australia Car
Satisfied Customers: 23,314
Experience: Automotive Engineer for 20 years, BEng hons degree,
Verified

Hello and welcome to Just Answer

This could be a wiring issue as things tend to expand when hot and its possible a poor or partial electrical connection is being pushed apart on one of the major sensors so check the connection plug and wiring to the following;
Airflow meter
Crank position sensor
Cam position sensor
O2 sensor
Throttle position sensor

unplug each in turn and use some switch / contact cleaner spray on the pins to ensure its all grease / dirt free

Also worth checking the connections to the fuel pump for the same reason - unplug each in turn and give them a good squirt of switch / contact cleaner - Not WD40

and also unplug and inspect the main power relays and fuses for signs of overheating or corroded terminals - so the ones for the ECU and the fuel pump

And also unplug the wiring loom connections in the engine bay one at time and inspect for corroded or recessed pins.

Check the resistance of the spark plug leads ( 13-15Kohm / metre) and replace if any doubt or high resistance - Also replace the spark plugs if any of them fail this checklist:

https://www.ngksparkplugs.com/about-ngk/faqs/spark-plug-faqs/how-do-i-read-a-spark-plug

Also its worth checking that the electric pump that feeds the injectors is working correctly, it should run for a few seconds then switch off when you first turn the ignition on. If the connections to this are corroded or damaged then the pump could stop at any time. Check that its relay switches in and out and the relay contacts are clean and bright – replace the relay if in any doubt and do the same for the fuse, ideally measure the voltage at the pump and check its getting 12V

Ask Your Own Australia Car Question
AU Auto Mechanic: Matt, Engineer replied 4 months ago

My goal is to give you the best advice that I can and I hope that I've helped today. Please remember to rate my service by selecting from the 5 stars at the top of the screen before you leave. If you need more help, use the reply box to let me know.
If you're not pleased, also let me know because rating bad does not result in a refund, there are better options. Rating now will not close this post nor prevent further replies
Thanks Matt

Ask Your Own Australia Car Question
AU Auto Mechanic: Matt, Engineer replied 4 months ago

Hi
do you still need help?
Bear in mind that the site takes a deposit from you at the beginning and this is held by the site until you rate my answer at which point the cash is split between the site and the expert. I am only paid for my work on this question if you rate my answer, using the star system at the top of the screen. Please do not forget! If you're not pleased, also let me know because rating bad does not result in a refund, there are better options. Rating now will not close this post nor prevent further replies
Thanks Matt

Ask Your Own Australia Car Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with an au auto mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Matt Your Own Question
Matt
Matt
Matt, Engineer
Category: Australia Car
Satisfied Customers: 23,314
23,314 Satisfied Customers
Experience: Automotive Engineer for 20 years, BEng hons degree,

Matt is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

Meet the Experts:

Curtis

Curtis

Australia Car Mechanic

1,614 satisfied customers

Qualified Automotive Mechanic, LPG & Airconditioning Diagnostic Technician.

Glenn Bradley

Glenn Bradley

Australian Car Mechanic

699 satisfied customers

Ex Transmission Shop Owner, Driveline Specialist, 30+ years in the Australian Automotive Industry

Scott B

Scott B

Australia Car Mechanic

478 satisfied customers

Qualified Automotive Mechanic, Service Manager & Proprietor 20+ years

Technopro

Technopro

Australia Car Mechanic

149 satisfied customers

20 years of experience in Automotive Repair Techniques and Diagnosis Expert.

Matt

Matt

Engineer

23,314 satisfied customers

Automotive Engineer for 20 years, BEng hons degree,

Mark

Mark

Mechanic

618 satisfied customers

29 Years as a Vehicle Mechanic in Australian Military

Mechanic Martyn

Mechanic Martyn

Australia Car Mechanic

325 satisfied customers

Advanced trade certificate in Automotive engineering

< Previous | Next >

Related Australia Car Questions
Changed fuel filter, kia carnival, 2004, checked fuel is
changed fuel filter, kia carnival, 2004, checked fuel is pumping, ok, but wont fire ? … read more
Matt
Matt
Engineer
Bachelor's Degree
23,314 satisfied customers
Have a 1995 190 petrol 1.8 The engine starves for fuel
Have a 1995 190 petrol 1.8 The engine starves for fuel between 60deg & 80deg on temp gauge, outside these figures it runs perfectly. Help! … read more
Matt
Matt
Engineer
Bachelor's Degree
23,314 satisfied customers
Vx comodore over fueling at start up(flooding). V6 engine. I
Vx comodore over fueling at start up(flooding). V6 engine. I have cleaned the maf and sprayed the connectors on it , also on the throttle body ( there r 2 there) I suspect dodgy engine temp sensors. T… read more
Gary
Gary
Senior Technician
Vocational, Technical or Trade School
97 satisfied customers
Toyota 80series 95 .petrol. Car was running .replaced
Toyota 80series 95 .petrol. Car was running .replaced alternater won't start.checked fuses ,wiring coil.turns over but wont start .any ideas… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
Proton Persona: I have a 2000 proton persona 1.3ltr after
Hi I have a 2000 proton persona 1.3ltr after have been driving for a bit when motor is warmed up it starts losing revs almost dying if drop down a gear it picks back up for that slight second wen revs… read more
indy-tech
indy-tech
Shop owner, technician
Vocational, Technical or Trade Scho
11 satisfied customers
mitsuibishi challenger: mitsuibishi challenger 2001 , petrol,
mitsuibishi challenger 2001 , petrol, auto, just bought , starts okay runs okay , then dies , mechanic fixed idler arm but still does same, could it be fuel filter or electronic ignition computer… read more
Doug C.
Doug C.
Technician
Vocational, Technical or Trade Scho
49 satisfied customers
Renault Scenic 2: I have a friend with a renault scenic 2 2.0l
I have a friend with a renault scenic 2 2.0l petrol f4r manual. Check injection is coming up on her cluster and the car won't rev above 2,500 rpm. My scan tool isn't detecting any fault codes. Under r… read more
Matt
Matt
Engineer
Bachelor's Degree
23,314 satisfied customers
Toyota estima: toyota previa 1994 2.4 petrol will fire up for
toyota previa 1994 2.4 petrol will fire up for few seconds then stops if left turned off for 1 to 24 hours it may start and run fine for a couple of weeks then with no warning will play up again. trie… read more
Matt
Matt
Engineer
Bachelor's Degree
23,314 satisfied customers
i have an holden rodeo 2002 3.2 V6 dual fuel, On lpg the engine
i have an holden rodeo 2002 3.2 V6 dual fuel, On lpg the engine runs very good but on petrol when im at cruising speed after 10 or 15 minutes the engine loses power and if i leave the throtle in the s… read more
Matt
Matt
Engineer
Bachelor's Degree
23,314 satisfied customers
Toyota Prado: hiMy 2003 Prado GXL 4 litre v6 is having issues
hi My 2003 Prado GXL 4 litre v6 is having issues starting, sometimes it starts first shot and runs like a dream, other times it can take 5 or 6 attempts for it to fire. This car is converted to LPG (i… read more
Scott
Scott
Self Employed Motor Mechanic
Vocational, Technical or Trade Scho
245 satisfied customers
holden jackaroo dlx: holden jackeroo88 petrol EFI, wont start
holden jackeroo88 petrol EFI, wont start in morning. starts and keeps starting up later in the day.mechanic replaced the coil, still no go. had a new fuel pump 2 years ago. any clues?… read more
Matt
Matt
Engineer
Bachelor's Degree
23,314 satisfied customers
Mitsubishi RVR-S: I have a Mitsubishi 1992 RVR-S engine 4g63.
I have a Mitsubishi 1992 RVR-S engine 4g63. It never starts first time. In fact it takes multiple tries with pumping the gas. Not pumping the gas makes no difference. Once running, runs ok but will oc… read more
Matt
Matt
Engineer
Bachelor's Degree
23,314 satisfied customers
xh falcon 5.0: hey ive got a 1997 xh falcon ute with a fuel
hey ive got a 1997 xh falcon ute with a fuel injected 5.0L v8 out of an el sedan, engine has trickflow twisted wedge heads and a gt40 intake manifold setup, and a MSD 6al ingnition box and coil to sui… read more
Jake
Jake
Audi Technician
Vocational, Technical or Trade Scho
2,428 satisfied customers
July 97 3.0 litre magna altera..driving home..loses power..engine temp
july 97 3.0 litre magna altera this week going to workXXXXXno problems but driving home after about 20 minutes on the road at the same intersection waiting for green light the motor loses power wont r… read more
Curtis
Curtis
Australia Car Mechanic
Vocational, Technical or Trade Scho
1,614 satisfied customers
courier: 92 model year fitted..4wd..cyl..injectors..computer module
mazda 2600 EFI motor '92 model year fitted to courier 4wd ute duel fuel. runs and cuts out after about 5 km on gas, hard to start on petrol running on less than 4 cyl. had injectors (red topped) (petr… read more
Andrew
Andrew
Vocational, Technical or Trade Scho
256 satisfied customers
98 nissan: petrol..we replaced the fuel filter..accelerate..coolant
hi we have a 98 nissan patrol st 4500 auto petrol wagon, over the last 12 months, and only on some trips, it would start to chug and i had to stay at a fast pace or it would cut out completely, one ti… read more
Curtis
Curtis
Australia Car Mechanic
Vocational, Technical or Trade Scho
1,614 satisfied customers
nissan: litre..v6..fuel injector..petrol tank and checked fuel filter
i have a nissan navara 2001 model 3 litre petrol v6 vg30e engine, car engine is missing while driving, car idol irattic, when i put it into gear, car idols higher than usual, when airconditioner is on… read more
matthew
matthew
Automotive Technician
Vocational, Technical or Trade Scho
112 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x