| Author |
Message |
Guest
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 Posted:
Wed Dec 08, 2004 5:41 am Post subject:
Hard (impossible) to Start '91 Toyota Previa |
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As of Sunday, I haven't been able to get my previa van started. This
comes after several weeks where it has been hard to start when cold but
with effort it would start, run rough for a few seconds and then run
fine for the rest of the day. No problems starting anyother time during
the day.
Last week, I noticed the mass flow sensor harness was not correctly
attached. When I reattached it the van was much easier to start. ran
rough for few secs but I could start it without pressing on the gas
pedal.
I thought I might have fixed the problem but no such luck. NOw it won't
start at all. It turns over fine, but it makes almost no effort to
start not quite like disconnecting the fuel pump but close
I have checked the mass flow meter, cold start injector, coolant
temperature sensor, injector start switch and they seem to check out
fine (at least from a resistance perspective)
I know I need to check the fuel pressure but I am not sure how to do
that.
Vacuum leak, TPS sensor, egr valve? What should I test next?
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Gord Beaman
Guest
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| Posted:
Wed Dec 08, 2004 5:41 am Post subject:
Re: Hard (impossible) to Start '91 Toyota Previa |
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ian_journeaux@hotmail.com wrote:
| Quote: | As of Sunday, I haven't been able to get my previa van started. This
comes after several weeks where it has been hard to start when cold but
with effort it would start, run rough for a few seconds and then run
fine for the rest of the day. No problems starting anyother time during
the day.
Last week, I noticed the mass flow sensor harness was not correctly
attached. When I reattached it the van was much easier to start. ran
rough for few secs but I could start it without pressing on the gas
pedal.
I thought I might have fixed the problem but no such luck. NOw it won't
start at all. It turns over fine, but it makes almost no effort to
start not quite like disconnecting the fuel pump but close
I have checked the mass flow meter, cold start injector, coolant
temperature sensor, injector start switch and they seem to check out
fine (at least from a resistance perspective)
I know I need to check the fuel pressure but I am not sure how to do
that.
Vacuum leak, TPS sensor, egr valve? What should I test next?
|
Your ability to get the vehicle to the nearest Toyota dealership?
--
-Gord.
(use gordon in email) |
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HachiRoku
Guest
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| Posted:
Wed Dec 08, 2004 5:41 am Post subject:
Re: Hard (impossible) to Start '91 Toyota Previa |
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On Tue, 07 Dec 2004 18:48:12 -0800, ian_journeaux wrote:
| Quote: | As of Sunday, I haven't been able to get my previa van started. This
comes after several weeks where it has been hard to start when cold but
with effort it would start, run rough for a few seconds and then run
fine for the rest of the day. No problems starting anyother time during
the day.
Last week, I noticed the mass flow sensor harness was not correctly
attached. When I reattached it the van was much easier to start. ran
rough for few secs but I could start it without pressing on the gas
pedal.
I thought I might have fixed the problem but no such luck. NOw it won't
start at all. It turns over fine, but it makes almost no effort to
start not quite like disconnecting the fuel pump but close
I have checked the mass flow meter, cold start injector, coolant
temperature sensor, injector start switch and they seem to check out
fine (at least from a resistance perspective)
I know I need to check the fuel pressure but I am not sure how to do
that.
Vacuum leak, TPS sensor, egr valve? What should I test next?
|
Timing Belt? You can remove the distributor cap and then watch the rotor
while someone cranks the engine...unless the Previa has a distributorless
ignition, then yer screwed.
No, not really...but someone with more experience with these systems will
have to help you.
Boy, I like it when life was simple!
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Philip
Guest
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| Posted:
Wed Dec 08, 2004 5:41 am Post subject:
Re: Hard (impossible) to Start '91 Toyota Previa |
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HachiRoku wrote:
| Quote: | On Tue, 07 Dec 2004 18:48:12 -0800, ian_journeaux wrote:
snip
I have checked the mass flow meter, cold start injector, coolant
temperature sensor, injector start switch and they seem to check
out fine (at least from a resistance perspective)
I know I need to check the fuel pressure but I am not sure how to
do that.
Vacuum leak, TPS sensor, egr valve? What should I test next?
Timing Belt? You can remove the distributor cap and then watch the
rotor while someone cranks the engine...unless the Previa has a
distributorless ignition, then yer screwed.
No, not really...but someone with more experience with these
systems will have to help you.
Boy, I like it when life was simple!
|
Like valves and cam in the block (flat head), driven by gears? I wonder
from time to time if a flathead engine built with current technologies might
..... Oh well, never happen.
--
- Philip
In observance of Pearl Harbor, feel free to
Zero in on a Mitsubishi driver and cut him off! |
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Martin Yanagisawa
Guest
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| Posted:
Sat Dec 11, 2004 5:42 am Post subject:
Re: Hard (impossible) to Start '91 Toyota Previa |
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HachiRoku wrote:
| Quote: | On Tue, 07 Dec 2004 18:48:12 -0800, ian_journeaux wrote:
Vacuum leak, TPS sensor, egr valve? What should I test next?
Timing Belt? You can remove the distributor cap and then watch the rotor
while someone cranks the engine...unless the Previa has a distributorless
ignition, then yer screwed.
|
My god, you have no idea what you're talking about.
No wonder you are such a big proponent of OT posts on this NG. You have nothing credible to add to the real topic, but you just post anyway. |
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HachiRoku
Guest
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| Posted:
Sat Dec 11, 2004 11:26 am Post subject:
Re: Hard (impossible) to Start '91 Toyota Previa |
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On Fri, 10 Dec 2004 22:53:26 -0500, Martin Yanagisawa wrote:
| Quote: | HachiRoku wrote:
On Tue, 07 Dec 2004 18:48:12 -0800, ian_journeaux wrote:
Vacuum leak, TPS sensor, egr valve? What should I test next?
Timing Belt? You can remove the distributor cap and then watch the rotor
while someone cranks the engine...unless the Previa has a distributorless
ignition, then yer screwed.
My god, you have no idea what you're talking about.
|
Um...
1: From his description, and since he seems to have checked everything
else, it sounds like it may be a loss of timing. Just a suggestion.
Anybody who read what I wrote could probably guess I'm not too familiar
with that particular model, but with motors (and Toyotas) in general.
2. No inkling there was a bit of humor there? Of course, he's not screwed.
Someone with an idea of how to check the timing (maybe even the OP
himself) would provide further info. Just like you did!
| Quote: |
No wonder you are such a big proponent of OT posts on this NG.
|
3. When did I ever say that? How often do I participate in OT posts?
Aren't most of my posts either asking for or offering advice?
| Quote: | You have nothing credible to add to the real topic, but you just post
anyway.
|
Seems to be the trend in this thread...
And *your* contribution to this particular person's plight was better than
what I offered in which way, again?
"It is better to be silent and thought a fool, than open one's mouth and
remove all doubt" Please, respond after your proctologist removes your
head... |
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HachiRoku
Guest
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| Posted:
Sat Dec 11, 2004 11:35 am Post subject:
Re: Hard (impossible) to Start '91 Toyota Previa |
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On Wed, 08 Dec 2004 00:45:17 -0600, Ray O wrote:
| Quote: |
"HachiRoku" <Trueno@ae86.GTS> wrote in message
news:mgvtd.5929$x26.5027@trndny03...
On Tue, 07 Dec 2004 18:48:12 -0800, ian_journeaux wrote:
As of Sunday, I haven't been able to get my previa van started. This
comes after several weeks where it has been hard to start when cold but
with effort it would start, run rough for a few seconds and then run
fine for the rest of the day. No problems starting anyother time during
the day.
Last week, I noticed the mass flow sensor harness was not correctly
attached. When I reattached it the van was much easier to start. ran
rough for few secs but I could start it without pressing on the gas
pedal.
I thought I might have fixed the problem but no such luck. NOw it won't
start at all. It turns over fine, but it makes almost no effort to
start not quite like disconnecting the fuel pump but close
I have checked the mass flow meter, cold start injector, coolant
temperature sensor, injector start switch and they seem to check out
fine (at least from a resistance perspective)
I know I need to check the fuel pressure but I am not sure how to do
that.
Vacuum leak, TPS sensor, egr valve? What should I test next?
Timing Belt? You can remove the distributor cap and then watch the rotor
while someone cranks the engine...unless the Previa has a distributorless
ignition, then yer screwed.
No, not really...but someone with more experience with these systems will
have to help you.
Previa has a timing chain, not belt. If the timing belt or chain were
broken, the engine would turn over more quickly than normal. The Previa has
a distributor.
|
Thanks, Ray. Much better, a post that educates rather than berates, eh?
Now I know something I didn't before.
I'm glad to see Toyota is on the trend back to chains. May be more noise,
but less of a PITA than belts. In the 'old' days, the engines with chains
were generally Interference. Is this still the case? Or, in an effort to
make their cars even more bullet proof, have they kept the N-I designs and
added chains to make them that much more maintenance free? |
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Ray O
Guest
|
| Posted:
Mon Dec 13, 2004 11:04 pm Post subject:
Re: Hard (impossible) to Start '91 Toyota Previa |
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|
"HachiRoku" <Trueno@ae86.GTS> wrote in message
news:Xywud.1254$P14.203@trndny05...
| Quote: | On Wed, 08 Dec 2004 00:45:17 -0600, Ray O wrote:
"HachiRoku" <Trueno@ae86.GTS> wrote in message
news:mgvtd.5929$x26.5027@trndny03...
On Tue, 07 Dec 2004 18:48:12 -0800, ian_journeaux wrote:
As of Sunday, I haven't been able to get my previa van started. This
comes after several weeks where it has been hard to start when cold
but
with effort it would start, run rough for a few seconds and then run
fine for the rest of the day. No problems starting anyother time
during
the day.
Last week, I noticed the mass flow sensor harness was not correctly
attached. When I reattached it the van was much easier to start. ran
rough for few secs but I could start it without pressing on the gas
pedal.
I thought I might have fixed the problem but no such luck. NOw it
won't
start at all. It turns over fine, but it makes almost no effort to
start not quite like disconnecting the fuel pump but close
I have checked the mass flow meter, cold start injector, coolant
temperature sensor, injector start switch and they seem to check out
fine (at least from a resistance perspective)
I know I need to check the fuel pressure but I am not sure how to do
that.
Vacuum leak, TPS sensor, egr valve? What should I test next?
Timing Belt? You can remove the distributor cap and then watch the
rotor
while someone cranks the engine...unless the Previa has a
distributorless
ignition, then yer screwed.
No, not really...but someone with more experience with these systems
will
have to help you.
Previa has a timing chain, not belt. If the timing belt or chain were
broken, the engine would turn over more quickly than normal. The Previa
has
a distributor.
Thanks, Ray. Much better, a post that educates rather than berates, eh?
Now I know something I didn't before.
I'm glad to see Toyota is on the trend back to chains. May be more noise,
but less of a PITA than belts. In the 'old' days, the engines with chains
were generally Interference. Is this still the case? Or, in an effort to
make their cars even more bullet proof, have they kept the N-I designs and
added chains to make them that much more maintenance free?
To be honest, I don't know for sure how the engine designers determine |
whether to use a chain or belt. I've heard the interference = chain and
non-interference = belt thing before and it makes sense but I've never seen
or heard anything official.
--
Ray O
(correct punctuation to reply) |
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HachiRoku
Guest
|
| Posted:
Tue Dec 14, 2004 5:41 am Post subject:
Re: Hard (impossible) to Start '91 Toyota Previa |
|
|
On Mon, 13 Dec 2004 12:04:57 -0600, Ray O wrote:
| Quote: |
"HachiRoku" <Trueno@ae86.GTS> wrote in message
news:Xywud.1254$P14.203@trndny05...
On Wed, 08 Dec 2004 00:45:17 -0600, Ray O wrote:
"HachiRoku" <Trueno@ae86.GTS> wrote in message
news:mgvtd.5929$x26.5027@trndny03...
On Tue, 07 Dec 2004 18:48:12 -0800, ian_journeaux wrote:
As of Sunday, I haven't been able to get my previa van started. This
comes after several weeks where it has been hard to start when cold
but
with effort it would start, run rough for a few seconds and then run
fine for the rest of the day. No problems starting anyother time
during
the day.
Last week, I noticed the mass flow sensor harness was not correctly
attached. When I reattached it the van was much easier to start. ran
rough for few secs but I could start it without pressing on the gas
pedal.
I thought I might have fixed the problem but no such luck. NOw it
won't
start at all. It turns over fine, but it makes almost no effort to
start not quite like disconnecting the fuel pump but close
I have checked the mass flow meter, cold start injector, coolant
temperature sensor, injector start switch and they seem to check out
fine (at least from a resistance perspective)
I know I need to check the fuel pressure but I am not sure how to do
that.
Vacuum leak, TPS sensor, egr valve? What should I test next?
Timing Belt? You can remove the distributor cap and then watch the
rotor
while someone cranks the engine...unless the Previa has a
distributorless
ignition, then yer screwed.
No, not really...but someone with more experience with these systems
will
have to help you.
Previa has a timing chain, not belt. If the timing belt or chain were
broken, the engine would turn over more quickly than normal. The Previa
has
a distributor.
Thanks, Ray. Much better, a post that educates rather than berates, eh?
Now I know something I didn't before.
I'm glad to see Toyota is on the trend back to chains. May be more noise,
but less of a PITA than belts. In the 'old' days, the engines with chains
were generally Interference. Is this still the case? Or, in an effort to
make their cars even more bullet proof, have they kept the N-I designs and
added chains to make them that much more maintenance free?
To be honest, I don't know for sure how the engine designers determine
whether to use a chain or belt. I've heard the interference = chain and
non-interference = belt thing before and it makes sense but I've never seen
or heard anything official.
|
That does seem to be the trend, at least with Toyota.
However, don't play that same card with a Nissan or a Honda!!! |
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MDT Tech®
Guest
|
| Posted:
Tue Dec 14, 2004 11:08 am Post subject:
Re: Hard (impossible) to Start '91 Toyota Previa |
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Martin Yanagisawa wrote:
| Quote: |
My god, you have no idea what you're talking about.
No wonder you are such a big proponent of OT posts on this NG. You have
nothing credible to add to the real topic, but you just post anyway.
|
Martin, OK, replace belt with chain then! |
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