Need help please! - engine running bad - Mustang Forum

nolds34 · 09-19-2018, 08:03 PM

Hello Everyone, it's been a long time since I've posted on here but glad to see people are still active.

I have a 95' Mustang GT with GT40 crate motor. #30 fuel injectors, MAF sensor, and had the car custom tuned w/chip not too long ago. The car has been running better than ever.

I recently drove it from Illinois to Michigan. Everything running great but the AC stopped blowing cold air so I took it in to be re-charged and the tech needed to replace a cap near the line and re-charged the system.

When I picked up the car and started it, it immediately started shaking (very badly). The tech said it is coincidental that this this is happening after the AC repair and there is nothing they can do. They checked the AC compressor and that's not bogging anything down. It's really not driveable. I ordered an OBD1 reader as they didn't have one. Any thoughts or suggestions? This out of state mechanic really doesn't want to help as the car has been modified and this issue happened when it was in their hands!

The only other item to add is that the oil was recently changed and is running a bit high - not sure if that has an impact.

FRED-MATIC · 09-21-2018, 01:22 PM

Unplug the MAF sensor while running, and see if it clears up. If so, most likely MAF issue.

If oil was overfilled greatly, yes that can affect the car.

FRED-MATIC · 09-21-2018, 01:23 PM

Also try the car without the chip

nolds34 · 09-26-2018, 06:32 PM

Thank you. I pulled out the MAF sensor and cleaned it with MAF cleaner. That worked but the issue came back. Might be a bad sensor to just ordered a new one. Thanks and will let u know if that works.

nolds34 · 10-05-2018, 09:04 PM

Well....installed new MAF sensor and didn’t do the trick. Also installed new EGR valve and it was better after first start and then came back after second and subsequent starts. Have tried pulling the chip out and also no luck.

There seems to be a little too much oil. Going to try and drain some out. After that, I’m at a loss on what to do next.

nolds34 · 10-08-2018, 02:15 PM

Here is what I found when attempting to change oil. Any idea what this is???

https://youtu.be/Ck5axxl2VQc

FRED-MATIC · 10-11-2018, 06:04 AM

Quote:

Originally Posted by nolds34

Here is what I found when attempting to change oil. Any idea what this is???

https://youtu.be/Ck5axxl2VQc

ACK ! Do NOT start and run the car anymore. That is the harmonic balancer/dampner.
Very common for the rubber bonding material to dry out and give up after age and heat.

Just order a new one off of Rock Auto, and a new crank bolt. You should be golden after that.

FRED-MATIC · 10-11-2018, 06:09 AM

This

https://www.dormanproducts.com/p-20118-594-024.aspx

It's a Dorman part, so you could find it locally. Replace the crank bolt and seal just as a cheap insurance as well

WankMyYoda · 10-22-2018, 10:12 PM

They drove your car til it fell apart.

Mr Hollywood · 11-05-2018, 08:35 AM

Quote:

Originally Posted by WankMyYoda

They drove your car til it fell apart.

They drove that fvcker so hard that the harmonic balancer came apart.

Hammer · 01-07-2019, 09:52 PM

did you resolve the issue yet?

09-19-2018, 08:03 PM	#1
nolds34 Registered User Join Date: Jul 2007 Posts: 6	Need help please! - engine running bad Hello Everyone, it's been a long time since I've posted on here but glad to see people are still active. I have a 95' Mustang GT with GT40 crate motor. #30 fuel injectors, MAF sensor, and had the car custom tuned w/chip not too long ago. The car has been running better than ever. I recently drove it from Illinois to Michigan. Everything running great but the AC stopped blowing cold air so I took it in to be re-charged and the tech needed to replace a cap near the line and re-charged the system. When I picked up the car and started it, it immediately started shaking (very badly). The tech said it is coincidental that this this is happening after the AC repair and there is nothing they can do. They checked the AC compressor and that's not bogging anything down. It's really not driveable. I ordered an OBD1 reader as they didn't have one. Any thoughts or suggestions? This out of state mechanic really doesn't want to help as the car has been modified and this issue happened when it was in their hands! The only other item to add is that the oil was recently changed and is running a bit high - not sure if that has an impact.

09-21-2018, 01:22 PM	#2
FRED-MATIC Charles Bronson Join Date: Dec 2003 Location: Palm Coast FL Posts: 8,193	Unplug the MAF sensor while running, and see if it clears up. If so, most likely MAF issue. If oil was overfilled greatly, yes that can affect the car. __________________ Advantage Auto Transport 954-254-0704

10-11-2018, 06:09 AM	#8
FRED-MATIC Charles Bronson Join Date: Dec 2003 Location: Palm Coast FL Posts: 8,193	This https://www.dormanproducts.com/p-20118-594-024.aspx It's a Dorman part, so you could find it locally. Replace the crank bolt and seal just as a cheap insurance as well __________________ Advantage Auto Transport 954-254-0704

10-22-2018, 10:12 PM	#9
WankMyYoda probed Join Date: Sep 2000 Posts: 52,450	They drove your car til it fell apart. __________________ 95 Gt vert Dart SHP under construction 347, 80lb Siemens (huh huh), AFR Renegade 185, Molnar forged crank and rods incoming, CP carillo slugs, custom ground blower cam, Edelbrock RPM, 90mm MAF, Griggs floating rear, Griggs tubular front A-arms, Koni Yellow Adj. Coilover at all 4, Griggs bumpsteer/spherical front sway/endlinks, MM Extreme lowers, MM full length subframes, MM Stainless brake lines all round, Vortech S Trim @ 15 lbs, Stearn ST1 19"/dished, Toyo Proxes T1R up front, Michelin PSS out back, Saleen style bar, Canton 7 qt pan, Red line full synth, Stainless/braided everywhere, Moates Quarterhorse, Pro 5.0, Spec St 2, etc

01-07-2019, 09:52 PM	#11
Hammer Stop. Join Date: Apr 2004 Location: Chicagoland Posts: 4,933	did you resolve the issue yet? __________________ 95 GT vert, 331, DART SHP, Vortech V2-Si 2018 Explorer Sport, Livernois

09-21-2018, 01:23 PM	#3
FRED-MATIC Charles Bronson Join Date: Dec 2003 Location: Palm Coast FL Posts: 8,193	Also try the car without the chip __________________ Advantage Auto Transport 954-254-0704

09-26-2018, 06:32 PM	#4
nolds34 Registered User Join Date: Jul 2007 Posts: 6	Thank you. I pulled out the MAF sensor and cleaned it with MAF cleaner. That worked but the issue came back. Might be a bad sensor to just ordered a new one. Thanks and will let u know if that works.

10-05-2018, 09:04 PM	#5
nolds34 Registered User Join Date: Jul 2007 Posts: 6	Well....installed new MAF sensor and didn’t do the trick. Also installed new EGR valve and it was better after first start and then came back after second and subsequent starts. Have tried pulling the chip out and also no luck. There seems to be a little too much oil. Going to try and drain some out. After that, I’m at a loss on what to do next.

10-08-2018, 02:15 PM	#6
nolds34 Registered User Join Date: Jul 2007 Posts: 6	Here is what I found when attempting to change oil. Any idea what this is??? https://youtu.be/Ck5axxl2VQc