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Old 05-01-2019, 08:49 PM   #41
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Originally Posted by RELLIKPIR View Post
honestly besides that all my issues have been minor/normal wear and tear. from 101k to 158k. The only other mystery issue was alignment caster was off. Replaceing both control arms revealed the cause and fixed. One was OEM worn out other
decent Aftermarket. It is currently parked because I got a 5sp 2.3 and the flex came apart so you get bad exhaust smell when stopped. Maybe my fault to not being more careful when changing motor mounts. Got new vent door cable from junkyard for nothing. Still have to find and assess the fixability of the recirculate door but if you charge the system and don't expect ice cold air on high in 60 seconds in stop and go when the car is 140 and 110 outside it works well. If my driving it gets to literally freezing at the vent after 5 mins of driving on 2-3. even over 100 outside. Also good tint and parking in the shade. New car has great tint so I'm not sure if AC in 04 is better or just tint is huge difference. Also not sure if it has the high throttle shut off for the compressor.
Lots of subjects there. It is best (proper Forum etiquette) that we do not discuss that stuff in the OP thread. If you would like to discuss these subjects, start a new thread. I will comment in your thread.

Yes, the A/C compressor does shut-off during WOT.
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Old 05-01-2019, 09:10 PM   #42
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The original FRPS on my 2005 ZX4 5-speed is just fine @ 190K miles. My thermostat is a different issue.

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Old 05-01-2019, 09:39 PM   #43
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Well, yesterday was the warmest day we've had so far this year. 90deg
Finally got a CEL and P0191 code when it did it this time.

I'm going to change out the fuel pump relay today and see what happens
Dave,
If you can read the code you clearly have some type of scan tool. Why arent you using the tool to look at live fuel pressure data PID? You should see 39/40 psi constant RFP.

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Old 05-02-2019, 06:04 AM   #44
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Dave,
If you can read the code you clearly have some type of scan tool. Why arent you using the tool to look at live fuel pressure data PID? You should see 39/40 psi constant RFP.

Paul
I have a ScanGauge II
I cant get it to read fuel pressure for some reason
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Old 05-02-2019, 12:18 PM   #45
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Originally Posted by DirtyDave View Post
I have a ScanGauge II
I cant get it to read fuel pressure for some reason
Well I would recommend you get a scan tool that can read RFP and other related data PIDs. Otherwise your just guessing.

Paul
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Old 05-07-2019, 04:57 AM   #46
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Well I would recommend you get a scan tool that can read RFP and other related data PIDs. Otherwise your just guessing.

Paul
My ScanGauge II is supposed to be able to read fuel pressure but I can't make it work. I followed the instructions on the website.
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Old 05-07-2019, 04:59 AM   #47
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Just for kicks, I unplugged my EGR and drove it like that for a week.
No issues and my mpg went from 28 up to 29.5
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Old 05-16-2019, 12:35 PM   #48
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Been driving for 3 weeks or so with the EGR unplugged and ignoring the CEL on the dash.

Hasn't had any issues and my MPG's are averaging 1.5-1.75 better.

Changed the FRPS about a week ago. No changes noticed there good or bad.

Seems like the EGR was the issue. Now do I replace it and keep it intact? Or delete it completely? The expensive part about deleting it would be the need for a Tune
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Old 05-17-2019, 02:34 AM   #49
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Quote:
Originally Posted by DirtyDave View Post
Been driving for 3 weeks or so with the EGR unplugged and ignoring the CEL on the dash.

Hasn't had any issues and my MPG's are averaging 1.5-1.75 better.

Changed the FRPS about a week ago. No changes noticed there good or bad.

Seems like the EGR was the issue. Now do I replace it and keep it intact? Or delete it completely? The expensive part about deleting it would be the need for a Tune
Not sure if you read my special EGR testing thread? -no link atm.

The end result of this EGR electrically disconnected Test for me was: YES a healthy EGR system does drag down or hurt the quality of (engine combustion) ignition in warm/hot weather in general and disconnecting the EGR does HELP engine ignition when the PZEV Red fuel injectors are slightly clogged.

Disconnecting the EGR greatly helps the symptom, but the EGR was not the problem in my case.

The engine symptoms and problem (my engine symptoms) were fixed after I replaced the PZEV Red fuel injectors with re-maned units.

My engine symptoms were similar to yours, but I did not have any problems at highway speeds (65-75) like you described in post-1. Overall, my engine symptoms were less or not as severe as yours. I also never let my car sit for 5 or 6 years like you did. I will guess your Red 12-hole injectors hated that long sit time. Those tiny-tiny 12 holes probably got clogged during that sit time.

Like you, I never had any codes during this engine symptom/s.

I have no comment about your EGR replacement idea at the moment. Too late, gotta go to bed. I advise you to not replace the EGR without additional reasoning as to why you should.

Gd Luck
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Last edited by Marde; 05-17-2019 at 02:42 AM.
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Old 05-17-2019, 08:49 AM   #50
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Quote:
Originally Posted by Marde View Post
Not sure if you read my special EGR testing thread? -no link atm.

The end result of this EGR electrically disconnected Test for me was: YES a healthy EGR system does drag down or hurt the quality of (engine combustion) ignition in warm/hot weather in general and disconnecting the EGR does HELP engine ignition when the PZEV Red fuel injectors are slightly clogged.

Disconnecting the EGR greatly helps the symptom, but the EGR was not the problem in my case.

The engine symptoms and problem (my engine symptoms) were fixed after I replaced the PZEV Red fuel injectors with re-maned units.

My engine symptoms were similar to yours, but I did not have any problems at highway speeds (65-75) like you described in post-1. Overall, my engine symptoms were less or not as severe as yours. I also never let my car sit for 5 or 6 years like you did. I will guess your Red 12-hole injectors hated that long sit time. Those tiny-tiny 12 holes probably got clogged during that sit time.

Like you, I never had any codes during this engine symptom/s.

I have no comment about your EGR replacement idea at the moment. Too late, gotta go to bed. I advise you to not replace the EGR without additional reasoning as to why you should.

Gd Luck
I did read your thread a few weeks ago I think. Injectors are a definite possibility and I will probably replace them no matter what. I think I remember you have an auto trans. Mine is manual. Might be why the symptoms show up at different time for us.
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