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Old 10-21-2012, 02:38 PM #16
Gospinn Gospinn is offline
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Where did you buy the relay from? Any pics? I'm still having the same problem. I'm in Austin.
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Old 10-21-2012, 06:33 PM #17
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Sorry but no pics as I have sold the car.
An Auto electrician in Mexico on the Baja Peninsula fixed it for me.
He installed the relay directly between the battery and the car.
I would take your car to an auto electrician or to Toyota and talk to them about installing another relay.
Sorry that is all I can say..?? Good luck
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Old 05-05-2018, 09:41 AM #18
NJ4Runner_JF NJ4Runner_JF is offline
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Question 99 4Runner - crank but no start when warm/hot

Hi All! I purchased a 99 3.4 TR4 with less than 160K miles on it a couple of months ago, and have had this warm/hot start issue since. Same as most others on here; when running for an extended period of time, engine will try to turn over but to no avail. Starter, battery, fuel pump, fuel injectors, ECM, etc. all ok. Luckily this is a second car, but I would kill to be able to drive it and not have anxiety about stopping at the store and turning off the engine lol.

Truck is getting spark and gas is being fed when trying to turn over. My mechanic has tested everything on this thing. When running it runs great, but the same frustrating sob story as everyone else. We recently replaced the camshaft position sensor as well as new plugs and the truck does run much better but the starting issue is still prevalent. I am reading that this relay between the battery and the starter seemingly fixed the problem for others and will wok back with my mechanic on that. Otherwise, any additional suggestions?
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Old 05-07-2018, 02:03 AM #19
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Quote:
Originally Posted by NJ4Runner_JF View Post
...99 3.4 TR4...
...engine will try to turn over but to no avail...
...Truck is getting spark and gas is being fed when trying to turn over. ... I am reading that this relay between the battery and the starter seemingly fixed the problem for others ...
Please clarify "turn over".
Starter is cranking the motor?
But you do not get combustion (when you hear, smell, feel the Vroom)?

If starter is cranking but you get no combustion, starter relay between battery and starter solenoid will not fix that. I believe the cranking circuit for the 3rd-gen does not have the same problem earlier trucks have.

I suggest you post on the appropriate forum for your generation.
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Old 09-08-2021, 07:40 PM #20
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Quote:
Originally Posted by pkinfinity View Post
I had the same problem for nearly 8 years. Replaced starters and batteries. Upgraded cables. Nothing worked. Several months ago I finally took it to a true Toyota expert in Austin (it took that long to find the shop). They installed a relay between the battery and the starter. It has started reliably ever since - even in 100+ degree days we have been having lately. BTW this is an unusual, but not uncommon problem of other older Toyotas including 4Runners and Camrys.
.

I know this is an old conversation but I love and drive a 1999 T4R and love it but I have started to experience this situation and was wondering if anyone out there know what relay is being referred to in this response?

I have exactly the some symptoms on my T4R.

Thanks in advance for any input and help given.
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Old 09-08-2021, 07:43 PM #21
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Quote:
Originally Posted by freddobonanza View Post
Okay, it has been 2 weeks since I last replied to this post and about 1 week since I installed a relay between the battery and the starter as pkinfinity mentioned:



I'm very happy to report that installing this relay has fixed my problem. The car starts every time. Crossed fingers
I know this is an old conversation but I love and drive a 1999 T4R and love it but I have started to experience this situation and was wondering if anyone out there know what relay is being referred to in this response?

I have exactly the some symptoms on my T4R.

Thanks in advance for any input and help given.
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Old 09-08-2021, 08:16 PM #22
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Manual? Auto?
If auto, checked neutral safety switch?
Care to post schematic of your truck so we can take a look?
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Toyota components are bullet-proof. Issues often arise from poor wiring, assembly and/or maintenance. Suspect those first.
Next only to our senses, the multi-meter is the most important electrical diagnostic tool. Spend $6 at Harbor Freight or $$$ blindly replacing parts.
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Old 09-08-2021, 08:35 PM #23
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Quote:
Originally Posted by ramo5150 View Post
I know this is an old conversation but I love and drive a 1999 T4R and love it but I have started to experience this situation and was wondering if anyone out there know what relay is being referred to in this response?

I have exactly the some symptoms on my T4R.

Thanks in advance for any input and help given.
The thread lives on! Hopefully it can help you too.

I seem to remember the relay looking something like this Toyota 4Runner Relay; relay assembly - 9098702009 - Genuine Toyota Part but your best bet would be to take your car into an auto electrician if you don't know what you're looking at. I don't and can't help you much more, sorry.

As another poster said, perhaps detail your car model and particulars to get a better response or enter these details into a parts site to find the relay.
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Old 09-11-2021, 03:42 PM #24
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Quote:
Originally Posted by RAD4Runner View Post
Manual? Auto?
If auto, checked neutral safety switch?
Care to post schematic of your truck so we can take a look?

Thanks 4 your response and helping.

I have to admit that i'm somewhat novice at mechanics but great at figuring out things and following directions and getting what needs to be done correctly.
I have a 99 T4R, auto, 4cyl and 2wd.

I don't know where the "neutral safety switch" and how to check it?

Can u tell me what schematics u need and I will do my best to find it and post it here so that u can eval and suggest. I'm pretty good at finding things online and pretty sure if knowing which schematic is needed, I can find it.

Just found this
I think this is what you might be asking about:
http://www.teamtoyota4x4.org/archivi...e/overalle.pdf

Thanks in advance.

Last edited by ramo5150; 09-11-2021 at 03:55 PM. Reason: found requested info
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Old 09-11-2021, 03:44 PM #25
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Quote:
Originally Posted by freddobonanza View Post
The thread lives on! Hopefully it can help you too.

I seem to remember the relay looking something like this Toyota 4Runner Relay; relay assembly - 9098702009 - Genuine Toyota Part but your best bet would be to take your car into an auto electrician if you don't know what you're looking at. I don't and can't help you much more, sorry.

As another poster said, perhaps detail your car model and particulars to get a better response or enter these details into a parts site to find the relay.
Thanks, can u post a pic of how this was installed?
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Old 09-20-2021, 01:37 PM #26
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Quote:
Originally Posted by freddobonanza View Post
...I hear a click noise when I turn the key but that is it.
...
Ramo,
If you also hear the click, please put us at your vehicle and tell us exactly where the click is coming from. We may be thousands of miles away
Meanwhile, WHILE IN PARK try jumping the small connector on your starter solenoid (piggybacked on the starter motor) directly to battery Pos 12V, and see if the consistently causes solenoid plunger to clunck and starter motor to turn.
ILLUSTRATED HERE:
RAD4Runner's 1986 4Runner dlx Build-up - Page 43 - YotaTech Forums

Quote:
Originally Posted by ramo5150 View Post
...
I don't know where the "neutral safety switch" and how to check it?...
Just found this
I think this is what you might be asking about:
http://www.teamtoyota4x4.org/archivi...e/overalle.pdf

Thanks in advance.
That looks like the correct schematic. However, I'm sorry, I do not have a 3rd gen so I do not know where the NSS is.
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If you want us to help from afar please let us see, hear, feel what you're dealing with.
A picture paints a thousand words.
Toyota components are bullet-proof. Issues often arise from poor wiring, assembly and/or maintenance. Suspect those first.
Next only to our senses, the multi-meter is the most important electrical diagnostic tool. Spend $6 at Harbor Freight or $$$ blindly replacing parts.
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