problems, problems, more problems! need help

[jmac0117]

My friend has a 89 5.0. and it pings when accelerating ... he changed plugs, wires,cap and rotor, set timing but still pings also kind of hesitates when accelerating any idea of what to check next??????:smash:

 

[BMad]

Usually pinging under acceleration means too much timing. I would try to retard the timing until it goes away. You may have a issue with your distributor, or maybe a problem with with the vacuum advance.

 

[jmac0117]

Timing has been set 2 times now. Yesterday was the 2 nd time. Plugs and wires last night also.

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[AdirondackFox08]

Did you check for codes? Also what is the timing set to?

 

[Wicked One]

Too low of octane gas. Or a bad batch.

 

[jmac0117]

Went through a few tanks now only 93 octane ran in the car. Timing is set at 10 degrees, no lights on but maybe dash light isn't working.. I told him to check for codes.

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[jmac0117]

He also has what seems to have a loss of power I found this out driving with him tonight. It used to roast them now it doesn't really seem like the power is all there.

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[Wicked One]

Stock?? what is done to it? Just started out of the blue? Was anything changed?

More info=better answers

 

[TheTunerGuy]

Has the balancer spun....

 

[jmac0117]

He has exhaust done flowmaster. Transmission from auto to a T5. Problems started a week after new transmission. When first put in car was great. Now it doesn't have the power it did.no check engine lights but he's still gonna check codes tomorrow just incase . I told him it might have been the balancer he didn't think so. You only hear the ting or ping sound when he revs to a high rpm not at an idle. He has new gaskets on valve cover and headers . It almost sounds like metal hitting metal to me. Stock engine.

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[jmac0117]

Ok update no codes. looking into it further seems that noise we keep hearing is only while it's in gear. Could this be cause by a bad U-joint??? Would a bad U-joint cause the car to lose power and make pinging sound??

 

[MaximumRisk]

how many miles? could be a bad, poorly firing injector(s) or (long shot) wrong spark plug

 

[jmac0117]

Spark plugs are good and wired correct everything was double checked there.. Injectors were one of the things we thought also have yet to change them. I am still thinking the balancer spun like The TunerGuy said... We are just changing out the cheaper and easy things first. Later today U-joints... I'm not sure how many miles are on it but I'm gonna say over 100k or close to it.

 

[MaximumRisk]

also check the fuel pressure to see if it is good. How old is the fuel filter? Have you guys checked it?

 

[jmac0117]

Fuel filter changed last year when he put in a new fuel pump. I will tell him to check on the fuel pressure... hopefully we figure this out soon..

 

[92BIGREDBEAST]

Did you change the ECU to A9L when you went to the t5???

 

[92BIGREDBEAST]

Spark plugs are good and wired correct everything was double checked there.. Injectors were one of the things we thought also have yet to change them. I am still thinking the balancer spun like The TunerGuy said... We are just changing out the cheaper and easy things first. Later today U-joints... I'm not sure how many miles are on it but I'm gonna say over 100k or close to it.

Sometimes when a u joint drys out the sound like pinging! Had it happen to my 05 Silverado at like 4-6000 rpm. I thought it was the converter or valves coming loose. Come to find it was a $14 u joint...

 

[jmac0117]

I believe he changed the ECU I am waiting for him to get back to me. fingers cross bad U-Joint..

 

[92BIGREDBEAST]

I'm sure the car would run with the auto ECU in there but it would think it would run like shit. It would explain the loss or power for sure. Is the car tuned with a chip?

 

[jmac0117]

I'm sure the car would run with the auto ECU in there but it would think it would run like shit. It would explain the loss or power for sure. Is the car tuned with a chip?

He said he changed the ECU but NOT a A9L but to a A9S...no chip..