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Author Topic: 3.4 swap runs but sputters smooths out then dies smells very rich  (Read 31039 times)

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Fierofool

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #135 on: March 30, 2020, 02:19:17 pm »
Advance your timing by about 2 degrees.  No need to jumper the ALDL.  Warm the car up, loosen the distributor and turn it slightly counterclockwise. 
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Sandman87

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #136 on: March 30, 2020, 03:07:39 pm »
Just drove it up the street wont stay running unless I keep my foot on the gas when it's in drive I advance the timing same thing as soon as I put it in drive it dies and it doesn't seem to have any power
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Mike

TopNotch

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #137 on: March 30, 2020, 05:39:40 pm »
Have you by any chance measured your fuel pressure?
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GTRS Fiero

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #138 on: March 30, 2020, 06:17:00 pm »
Yes, fuel shortage.  Either not getting enough pressure, or the injectors are not providing adequate flow.  Ultimately, running lean.

Low fuel pressure would affect both cold start and load conditions.
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GTRS Fiero

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #139 on: March 30, 2020, 06:25:11 pm »
Quote from: Fierofool on March 30, 2020, 08:50:03 am
Does anyone know if a misadjusted TVI cable would cause the stalling?  Seems the rpm isn't being increased when put in gear.

It could always be disconnected, to test.
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Fierofool

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #140 on: March 30, 2020, 07:26:03 pm »
The TVI cable is usually a problem when it's too loose.  While trying to find how to adjust it, I find that the TVI cable has more to do with the shifting, so I'm not sure if it affects the idle speed when put into gear.  I do know that if the car has an ECM from a manual transmission that this will be a problem. 

Might even cause automatic shifting issues.  Someone else will need to address that. 
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Sandman87

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #141 on: March 30, 2020, 07:40:52 pm »
I have measured fuel pressure 40 psi
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Mike

Sandman87

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #142 on: March 30, 2020, 07:43:06 pm »
I went out there a little bit ago the engine was still a little warm it started right up no problem idle just fine put it into drive and it was staying running chugging along at like five to six hundred RPMs but still had very little power if I tried to go anywhere. Once the engine heated up more it would no longer run in drive with out giving it gas . I have ordered a new temperature sending unit, a new IAC valve, a new throttle position sensor, and a new air charge sensor. When they show up I will throw those in and hopefully it makes a difference
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Mike

Sandman87

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #143 on: March 30, 2020, 07:44:24 pm »
PS I really don't think it's running lean as even with these new Bosch injectors it still smells to be running a little rich. And I also ordered a new EGR gasket set because it is leaking at the tube where it meets the EGR valve. Also should I order a new EGR solenoid? Just to replace all the sensors since the car is been sitting out so long just to rule them all out
« Last Edit: March 30, 2020, 07:52:53 pm by Sandman87 »
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Mike

GTRS Fiero

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #144 on: March 30, 2020, 09:07:56 pm »
Quote from: Sandman87 on March 30, 2020, 07:43:06 pm
I went out there a little bit ago the engine was still a little warm it started right up no problem idle just fine put it into drive and it was staying running chugging along at like five to six hundred RPMs but still had very little power if I tried to go anywhere. Once the engine heated up more it would no longer run in drive with out giving it gas . I have ordered a new temperature sending unit, a new IAC valve, a new throttle position sensor, and a new air charge sensor. When they show up I will throw those in and hopefully it makes a difference

500-600 RPMs is too low. Yes, could be the IAC.  Did you clean out the throttle body passages?
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GTRS Fiero

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #145 on: March 30, 2020, 09:08:13 pm »
Quote from: Sandman87 on March 30, 2020, 07:40:52 pm
I have measured fuel pressure 40 psi

Only 40PSI?
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GTRS Fiero

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #146 on: March 30, 2020, 09:13:39 pm »
Quote from: Sandman87 on March 30, 2020, 07:44:24 pm
PS I really don't think it's running lean as even with these new Bosch injectors it still smells to be running a little rich. And I also ordered a new EGR gasket set because it is leaking at the tube where it meets the EGR valve. Also should I order a new EGR solenoid? Just to replace all the sensors since the car is been sitting out so long just to rule them all out

You might want to hold off on the RGR solenoid for a bit.

I was wondering about the fuel smell issue.  The O2 indicating lean, causing the ECU to try to change the mixture.
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Sandman87

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #147 on: March 31, 2020, 08:35:36 am »
It's it's right over 40 PSI at idle nice and steady. I thought that was normal for this car
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Mike

Sandman87

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #148 on: March 31, 2020, 08:36:23 am »
are the throttle body and intake plenum are spotless when I was redoing the engine and had them off the car I went through them pretty good.
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Mike

Sandman87

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Re: 3.4 swap runs but sputters smooths out then dies smells very rich
« Reply #149 on: March 31, 2020, 08:37:52 am »
Would you recommend me replacing the O2 sensor?
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Mike
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