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Search: Posts Made By: Springster
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Forum: Tech / General Engine
02-23-2017, 05:59 AM
Replies: 28
Views: 1,906
Posted By Springster

Re: Misfire

+1 for dirty injector(s). The spray pattern is not atomized enough to burn. When cold, causes no or rough running. When the engine heats up the fuel will burn but can cause back firing. Check plugs...
Forum: Tech / General Engine
09-13-2015, 01:38 PM
Replies: 2
Views: 1,258
Posted By Springster

Re: Fuel level rheostat/pot replacement part number

Thanks for the info. :) I was actually able to fix the bad connection with a strip of copper but I had to buy a whole new sending unit. Part of it broke that I couldn't fix. :gocrazy:

With a...
Forum: Tech / General Engine
09-12-2015, 02:57 PM
Replies: 2
Views: 1,258
Posted By Springster

Fuel level rheostat/pot replacement part number

1986 2.8 MPFI

Anyone know the part number for the fuel level rheostat? It's held on by 2 screws and mounted on 2 springs. I would think that just that part is replaceable instead of having to...
Forum: V6
06-14-2015, 07:56 PM
Replies: 2
Views: 2,777
Posted By Springster

Re: Ford E59E-A2B injector

UPDATE: I got the Ford injectors from South Bay and the 2.8 runs great now! Mark up another F1ZE success! Easy to switch out. Wires plug right on. About 1/4" shorter but if you use your clips from...
Forum: Exhaust
06-04-2015, 03:10 PM
Replies: 6
Views: 953
Posted By Springster

Re: Obsolete stock V6 muffler

Pep boys had a 30% off sale for online orders so I have the standard dual pipes and muffler on the way. Just have pick up at the store. Looks like it should bolt in with no additional hangers. The...
Forum: Exhaust
05-29-2015, 03:29 PM
Replies: 6
Views: 953
Posted By Springster

Re: Obsolete stock V6 muffler

Thanks for the input! After looking more at what was for sale through the local parts stores (easier to return) I found that the picture doesn't always match the specs when it came to the number of...
Forum: Exhaust
05-27-2015, 03:56 PM
Replies: 6
Views: 953
Posted By Springster

Obsolete stock V6 muffler

1986 v6 65k original muffler with rusted out guts... Can't find anything close. This will be my wifes car so I'll be sticking with a quiet muffler. What have you guys done to replace this? I...
Forum: V6
05-25-2015, 12:29 PM
Replies: 2
Views: 2,777
Posted By Springster

Ford E59E-A2B injector

I was going to switch to the F1ZE injectors on my 86 2.8L but found some Ford E59E-A2B. They are 14# according to http://www.fuelinjector.citymaker.com/Fuel_Injector_Flow_Rates.html but at 30PSI (2...
Forum: V6
03-24-2015, 07:16 PM
Replies: 20
Views: 1,142
Posted By Springster

Re: 91 3.1 5 speed camaro cant be fixed

Block off the EGR at the throttle body with a thin metal plate just to make sure it's not an issue.
Forum: V6
03-12-2015, 09:34 PM
Replies: 9
Views: 800
Posted By Springster

Re: How long does it take for idle to settle?

Found an air leak around the egr shaft by blocking off the egr tube at the throttle body. Which smoothed out the idle. Then I removed the egr blockage and started spraying carb cleaner around the...
Forum: V6
03-12-2015, 09:04 PM
Replies: 9
Views: 800
Posted By Springster

Re: How long does it take for idle to settle?

Found something interesting. After a few attempts of cranking, starting and slowly dieing I discovered that disconnecting the IAC had no effect on the problem. The rpm still cycled back and forth...
Forum: V6
03-12-2015, 09:40 AM
Replies: 9
Views: 800
Posted By Springster

Re: How long does it take for idle to settle?

I did not know that. Thanks for the info! I'll look for leaks tonight! :)
Forum: V6
03-12-2015, 08:08 AM
Replies: 9
Views: 800
Posted By Springster

Re: How long does it take for idle to settle?

What are some possible problems when the idle learn doesn’t stick? Or maybe I just don’t understand… Here’s what I’m doing: I let the car sit and learn idle without touching anything for 25 minutes...
Forum: Interior
03-11-2015, 12:55 PM
Replies: 2
Views: 578
Posted By Springster

"Seal" a Headliner before recovering?

I'm planning to redo my headliner after reading several success stories and tutorials in the forums but had a question.

I saw an ad on Craigslist for 3rd Gen headliner repair and the guy says...
Forum: V6
02-20-2015, 04:49 PM
Replies: 9
Views: 800
Posted By Springster

Re: How long does it take for idle to settle?

I will set timing to 10 and try again.

The IAC was reset by turning key on, jumpering A to B, unplug IAC, key off, plug in IAC. I didn't find the procedure in the factory shop manual but gleaned...
Forum: V6
02-19-2015, 05:48 PM
Replies: 9
Views: 800
Posted By Springster

How long does it take for idle to settle?

I disconnected the battery from the computer to reset it. It took several cranks to start it and stay running. Then after a few minutes it settled out and idled ok. I started it the next day but now...
Forum: V6
02-09-2015, 12:30 PM
Replies: 1
Views: 513
Posted By Springster

Re: Stumped: 1986 2.8l no start

I just wanted to close this thread by posting the problem I found which you'll find with searching for "old varnished gas issue".

The injectors where dirty and not atomizing the fuel. Yup, fuel...
Forum: DFI and ECM
02-09-2015, 12:09 PM
Replies: 8
Views: 1,656
Posted By Springster

Re: Time for a new ECM?

I just wanted to close this thread by posting the problem I found which you'll find with searching for "old varnished gas issue".

The injectors where dirty and not atomizing the fuel.
Forum: V6
02-09-2015, 12:04 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

Success at last! Cleaning the injectors to fix the spray pattern got it to stay running!

All plugs indicated carbon fouling from being too rich (fluffy soot). New plugs would foul after 30ish...
Forum: V6
02-08-2015, 07:14 PM
Replies: 13
Views: 850
Posted By Springster

Re: 87 camaro V6 mpfi fuel delivery problem

I don't know how a Camaro is set up but I had a 86 Buick Century where there was a 2 inch rubber hose, between the pump and the pipe going out the gas tank, which was split. Pump ran but no pressure.
Forum: V6
01-17-2015, 01:54 PM
Replies: 3
Views: 610
Posted By Springster

Re: hummin or buzzing sound

Also check the wires in the fan relay connector. My 86 had bare wires there and made a buzzing sound randomly.
Forum: DFI and ECM
11-25-2014, 07:43 PM
Replies: 8
Views: 1,656
Posted By Springster

Re: Time for a new ECM?

Wow, that got fried!
Forum: DFI and ECM
10-30-2014, 12:24 PM
Replies: 8
Views: 1,656
Posted By Springster

Re: Time for a new ECM?

Ack! Sorry, I forgot to mention that the ecm was replaced but made no difference.

Each injector is 16 ohms but are stock. They hold pressure for around 20 minutes (42 down to 25PSI).

I'm...
Forum: DFI and ECM
10-30-2014, 08:24 AM
Replies: 8
Views: 1,656
Posted By Springster

Re: Time for a new ECM?

Ok, thanks. I was having a hard time deciding if the ecm was bad because uplugging sensors seemed to make no difference.

The plugs were carbon fouled when I got the car. I put new ones in and it...
Forum: V6
10-19-2014, 05:46 PM
Replies: 1
Views: 513
Posted By Springster

Stumped: 1986 2.8l no start

Restarting from another long thread.

Car fires from cold start injector or from injectors when CSI is disconnected. Does not stay running. With CSI unplugged it will only fire a bit if I wait a...
Forum: DFI and ECM
10-08-2014, 07:57 AM
Replies: 8
Views: 1,656
Posted By Springster

Time for a new ECM?

This is what I found leading me to think the ECM got glitched but I am happy to be told otherwise. I'm just looking for confirmation.
Frayed fan relay wiring at the plug sometimes shorting black|red...
Forum: V6
10-04-2014, 05:46 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

I tried forcing limp mode by putting a 3.9kohm on A and B of the ALDL. It didn't make much difference.

Any thoughts on the Autoxray data?
-F -E -D -C -B -A T A B C D E F
Prom ID 2891
IAC 130...
Forum: DFI and ECM
10-02-2014, 12:33 PM
Replies: 0
Views: 436
Posted By Springster

1227302 AM Radio easter egg

So I was probing with an oscilloscope to troubleshoot a no start issue and on U18 (http://www.exatorq.com/ludis_obd1/1227170sheet2.gif) noticed a fuzzy reading on the TPS, MAP, MAT and CTS inputs. So...
Forum: V6
09-25-2014, 12:24 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

The Dizzy checked out ok. There where no shorts from the pickup coil to ground. The pickup coil resistance was in range (I don't remember the value, just that it was within the specs I found). Magnet...
Forum: V6
09-25-2014, 12:03 PM
Replies: 5
Views: 364
Posted By Springster

Re: Blue connector ID please

Thanks! That makes sense. I am troubleshooting a startup issue (in another thread (Varnished gas?)) and when I unplugged this sensor it did not fire at all. I thought I was on to something but it was...
Forum: V6
09-24-2014, 10:13 PM
Replies: 5
Views: 364
Posted By Springster

Blue connector ID please

1986 2.8L Next to the coolant sensor there is a blue connector with a wire clip around the lower section to help hold it on. The wires come out of a rubber strain relief. The wire colors are tan and...
Forum: V6
09-23-2014, 12:47 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

Thanks for the ideas! I'll check the distributor pick up pole magnet versus coil output. The scope should show a repeating pattern of 6 pulses and they should look identical. I wish I had the dough...
Forum: V6
09-17-2014, 09:35 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

So I found a pretty cool test to check that the ECM can pulse the injectors.

Turn the key to Run.
Disconnect the 4 pin connector on the dizzy.
Using a test light to limit current, clip one end...
Forum: V6
09-07-2014, 02:48 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

Pulled the cat but still no start.

Did a compression check (but not with throttle wide open and all plugs removed like your supposed to), I did one plug at a time. All read the same at about...
Forum: V6
09-06-2014, 09:39 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

The cold start injector screen was pretty clean and it squirts. So I'm checking that off the list. What's strange is that after I cleaned out the other injector screens, now the engine does not fire...
Forum: V6
08-20-2014, 06:02 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

Well, I think I remembered backwards... Cause I took it apart under the hood where it bolts to the rubber hose and I was able to blow and hear bubbles in the tank. :) And I turned on the key with...
Forum: V6
08-18-2014, 12:24 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

I let a bunch of fuel flow into a glass container (sounds safe :) ) and there was nothing floating around or sitting on the bottom. (I had a "Gumby" for a roommate in '84, we called his '76 Monte...
Forum: V6
08-16-2014, 02:44 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

I cleaned the injector screens and still have the same problem. To prove the injectors where flowing I put the pressure gauge on the rail and let the pump go for its 2 seconds to get 42 PSI then...
Forum: V6
07-31-2014, 07:32 AM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

Three plugged injector screens... All on the same side of the fuel rail. Seems weird? The screens were full to the top of a crystallized stuff which fell apart to a fine sand when I poked at it....
Forum: V6
07-25-2014, 09:15 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

All injectors ohmed ok. 16.2-16.5 ohms

Doesn't mean they are not plugged. Time to take em out and inspect and clean unless there is something else to check?

I REALLY like working on this car!...
Forum: V6
07-21-2014, 08:29 AM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

Due to overtime and fixing other cars I haven't had time to pull the intake yet but I was talking to a coworker about it and he mentioned that the ethanol in todays fuel could have ruined the...
Forum: V6
07-13-2014, 09:17 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

Lol. I'm only doing it because I have time to on this car. I know Iron Dukes real well but this is my first 2.8 mpfi to figure out. : ) And I REALLY appreciate the help. : )

Using my cheap...
Forum: V6
07-13-2014, 09:21 AM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

All checked out good there. I also scoped the ecm ign pulse output (white wire) and the icm (black/white tach wire) and they matched. Should mean the icm is good.
Forum: V6
07-12-2014, 11:36 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

Maverick, did some reading and learned about cold start injector. This is my first car with it. :) I agree it's running on it. Because after a few start attempts that injector stops squirting due to...
Forum: V6
07-11-2014, 09:51 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

I checked the rpm with the scanner and got 450 to 500. Bad ign module? It tested ok at AZ. I gotta get some sleep before work otherwise I would hook the oscilloscope up to it.

It's a Camaro with...
Forum: V6
07-10-2014, 10:05 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

I ticks a guy off that junk is being sold as good stuff. Adds to the frustration of troubleshooting. The new MAF has a light wave to the foil. The old one is cleaner and straighter. Both are GM. The...
Forum: V6
07-10-2014, 07:30 AM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

Using the scanner I monitored the new MAF and am now getting some readings. 3gm at key on and up to 9gm when starting. I'll have to try the old MAF again just to double check that I wasn't always...
Forum: V6
07-09-2014, 08:34 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

New MAF didn't make a difference. It's remanufactured so I suppose it could be bad out of the box. The film is pretty flat. I think my next step is to borrow some from a junkyard that owes me a favor...
Forum: V6
07-02-2014, 11:55 AM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

[quote=Maverick H1L;5784828]50Hz means the MAF is bad. Period. It's over-reporting the air flow by about 25%. Again, the MAF signal at idle should be 32Hz. quote]

Thanks for the info! That lead...
Forum: V6
06-28-2014, 06:54 PM
Replies: 56
Views: 3,977
Posted By Springster

Re: Old varnished gas issue?

Thanks for the MAF test info. I used an oscilloscope to read the MAF and got about 50hz. Looks like MAF frequency follows air flow. Seems to be working but I have to get another issue fixed first, i...
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