10 most common issues with the TGPs

Started by tyroelite, March 29, 2006, 09:58:00 PM

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tcristea

Quote from: TGPilot on March 31, 2006, 07:58:15 AM
This 10 most common problems can get pretty hairy man although it is a GREAT idea.

The problem I see with a flow-chart is the fact that one of 3 sensors can easily mask another problem or give a false trouble which has nothing to do with what actually is wrong.

What most need to do as soon as they buy a TGP is replace ALL THE SENSORS (WITH GM PARTS!), ensure it has a good x-over and 02, ohm the injectors, and test the FPR. Then start looking for vacuum leaks.

If it has compression and the turbo isn't seized she should be running pretty good especially with the proper chip tweeks. :icon_cool:

T's 2 cents worth:

It is a great idea but I think if you were to say the top 10 things to change or maintenance to stop the top 20 most common problems for under $400 would probably be a much shorter list   ;)  I dont think spending under $400 is all that bad when you consider what it is we own!

As TGPilot stated the absolute BEST thing you can do first thing is replace ALL the sensors.  The total cost for GM parts for them is roughly $250 and is well worth it. 

I would add to that list vacuum hoses - $70.  Even the smallest crack can cause agony in trouble-shooting problems that dont even seem related.

The coil packs as well - $19 each for good ones and $26 for performance ones.  I cant tell you how much of a difference that made in my poor idle and hard starts.  I have nothing to go on for performance increase since I bought it in bad shape but I'm sure providing better and faster spark helped.

O-rings help stop those tiny leaks you didnt know you had as well - $3.

Simply CLEANING the TB works wonders on some rough idles and hard starts.  A can of CRC Intake Cleaner is $4 and will last you a long time.

Plugs AND wires - $80 - Nuff said here   :icon_mrgreen:

And my alltime favorite is WD40.  If it should move and doesn't...  :laugh:

Again just my 2 cents worth but like the saying goes "Pay a hundered bucks today or put it off and pay a thousand tomorrow".  Or worse yet we see another TGP in the JY getting parted out because someone got frustrated and couldnt do simple maintenance.

GangstGP

How about the top 10 upgrades over stock, accessory components. must work with stock engine/tranny combination to narrow it down.
daily driver: 1990 Turbo Grand Prix 180k miles
backup car: 1990 Turbo Grand Prix 118k miles
spare parts: TGP motor and tranny from a red '89

tyroelite

QuoteIt is a great idea but I think if you were to say the top 10 things to change or maintenance to stop the top 20 most common problems for under $400 would probably be a much shorter list

QuoteHow about the top 10 upgrades over stock, accessory components. must work with stock engine/tranny combination to narrow it down.

sounds like a good idea to me.

sleeperred90tgp

Quote from: tcristea on April 02, 2006, 02:20:33 PM
Quote from: TGPilot on March 31, 2006, 07:58:15 AM
This 10 most common problems can get pretty hairy man although it is a GREAT idea.

The problem I see with a flow-chart is the fact that one of 3 sensors can easily mask another problem or give a false trouble which has nothing to do with what actually is wrong.

What most need to do as soon as they buy a TGP is replace ALL THE SENSORS (WITH GM PARTS!), ensure it has a good x-over and 02, ohm the injectors, and test the FPR. Then start looking for vacuum leaks.

If it has compression and the turbo isn't seized she should be running pretty good especially with the proper chip tweeks. :icon_cool:

T's 2 cents worth:

It is a great idea but I think if you were to say the top 10 things to change or maintenance to stop the top 20 most common problems for under $400 would probably be a much shorter list   ;)  I dont think spending under $400 is all that bad when you consider what it is we own!

As TGPilot stated the absolute BEST thing you can do first thing is replace ALL the sensors.  The total cost for GM parts for them is roughly $250 and is well worth it. 

I would add to that list vacuum hoses - $70.  Even the smallest crack can cause agony in trouble-shooting problems that dont even seem related.

The coil packs as well - $19 each for good ones and $26 for performance ones.  I cant tell you how much of a difference that made in my poor idle and hard starts.  I have nothing to go on for performance increase since I bought it in bad shape but I'm sure providing better and faster spark helped.

O-rings help stop those tiny leaks you didnt know you had as well - $3.

Simply CLEANING the TB works wonders on some rough idles and hard starts.  A can of CRC Intake Cleaner is $4 and will last you a long time.

Plugs AND wires - $80 - Nuff said here   :icon_mrgreen:

And my alltime favorite is WD40.  If it should move and doesn't...  :laugh:

Again just my 2 cents worth but like the saying goes "Pay a hundered bucks today or put it off and pay a thousand tomorrow".  Or worse yet we see another TGP in the JY getting parted out because someone got frustrated and couldnt do simple maintenance.



Well first off I don't agree with purchasing GM sensors. I don't have a GM sensor on my motor except the IAC and TPS, oil pressure switch, low coolant, steering and ac pressure switches.  and I think it runs pretty well. ;) Haven,t changed one of the aftermarket in 6 or 7 years. If you wan't to pay double so be it. :icon_rolleyes:

Next vaccum hoses for 70. Wow you must be rich. 10 bucks will cover it.

Next coils for 19. Where did you get them. :icon_question: I have never seen one for less than 29, aftermarket included. Please don't tell me Acell. I have bought a bunch of them at different places.

195k miles and never had to clean the TB :icon_question:

Only o-ring i found to leak was the oil pump drive. The only other ones I know of are in the oil cooler and the FI. Never change any of them until I change the FI and I use the old shit from the doner.

Lets face it you can get buy for alot less. Best thing to do is learn how to troubleshoot and fix what breakes. All it takes is a shop manual and a volt meter.

That's a dimes worth. :laugh:

Jud
Quickest TGP on this planet.

:cheers:FASTEST TGP AWARD given By TGPforums!:cheers:

            Congratulations JUD! Keep an eye on your rear-view mirror for TGPilot

tcristea

So that means you overpaid 8 cents or I underpaid 8 cents   :laugh: ;)

Seriously though, rich I am not but what it saves in the long run is what matters and keeping her running well is the most important thing.

GangstGP

 :laugh: I am going to have to side with tcristea on this one!  I think this new user is learning way fast! I think the car is going to do well on the track and be a good daily driver.
AFTERMARKET SUCKS..... Im rollin with GM baby!
daily driver: 1990 Turbo Grand Prix 180k miles
backup car: 1990 Turbo Grand Prix 118k miles
spare parts: TGP motor and tranny from a red '89

tcristea

I'm not arguing the fact that learning how to troubleshoot and having a good voltmeter arent important.  My point here is that if you are going to do something dont do it half-assed.  I know for a fact that you get what you pay for and I have learned that aftermarket SUCKS for our cars  :laugh:

As for the coils Delco from AdvanceAuto for $19 each.  I could have spent $26 for "high performance" but why?

For the o-rings, why not change em while you're there changing everything they connect?  Cheap and you know they are going to be good when you're done.

Cleaning the TB in my opinion just makes sense because it keeps it lubricated and gunk-free, again why not if you're there?

You are absolutely correct when you said that all things can be replaced cheaper and re-using old from donors is a great idea if you're strapped hard for cash and need the car running now.  But if you can go with OEM and not get beat down by the wife then IMO it's the best way to go.

Not arguing just offering back some of the things I've learned in the short amount of time I've been here and it's just MY opinion and everyone is welcome to ignore it or not   ;)