wierd chugging problem comes and goes.

[Turbo Habanero]

So recentley i have had this chugging problem seems to happen when i drive at a consistant throttle postion.

Same feeling comes through full throttle pulls

The car just hesitates and starts jerking until i left off or back off throttle. '

Like a cloged fuel filter or something. (although i hear they last for ever)

I got codes 24-41 and i do hit fuel cut in 2nd every now and then if i dont let of gas while shifting results in code 34.

No engine light stays on just stored.

Mods are

Driftmtion Intercooler
Intake filter
3inch catless exhaust elbow back

 

[TRDownShift]

Did you check your CPS wires?

 

[hvyman]

^ that would not matter.

24 is intake air temp. Which is the afm.

41 is tps signal.

tps is prolly the problem your mainly concered about. the 24 is prolly the reason your hitting fuel cut in 2nd.

 

[Timeless6270]

^ My thoughts exactly. My S-10 DD was doing the same thing. So I replaced it and the fuel pump. I'm not saying yours is the pump, just mine.

 

[Turbo Habanero]

thanks for the quick responses guys.

couple people have told me my spark plugs could be gaped wrong.

and that since im runnning higher boost to go with a colder plug

 

[jonahs_supra]

mine did this when i first got it
1st 20 minutes of highway driving was fine
after 20 minutes it would chug and almost feel like a mis fire
but it would only act up when driving and not idling
also when the temp would change it would get worse

replaced afm and it took care of it

test your afm

im running a colder plug bkr7e...on stock boost with same mods and have no driveability issues

 

[hvyman]

Spark plugs are not going to cause that, Thye would cause a mis or if the plugs were gapped wrong the boost would blow out the spark in boost.

Id fix the tps and try a different afm.

For plugs id use the bk7res ngk v power coppers., There like 1.69 from rock auto and gap them to .028.

 

[Turbo Habanero]

Spark plugs are not going to cause that, Thye would cause a mis or if the plugs were gapped wrong the boost would blow out the spark in boost.

Id fix the tps and try a different afm.

For plugs id use the bk7res ngk v power coppers., There like 1.69 from rock auto and gap them to .028.

ok will do.

It does feel a bit like a mis fire.

Im not sure why its throwing 41 TPS adjusted to spec.. It does have this code stored like i said be for my check engine light only comes on when i hit fuel cut.

I do not have a OHM/Volt meter guess i should go get one.

 

[hvyman]

Can always clear the codes and re drive to make sure your getting the right codes.

If they both come back id replace both. Tps can go out just in the blink of an eye. Mine decieded it was time to go out when i started my car after a hg. Why it just did.

If the plugs havnt been replaced ina while id replace them and gap them to the proper spec.

 

[Turbo Habanero]

One quick question the AFM's are all the same 87-92 they only differ 7M-GTE to 7M-GE correct?

 

[hvyman]

Correct. Can even use the lexus afm electronics.

Tho i have seen the pre cars work better with the early afms.

 

[Turbo Habanero]

Can always clear the codes and re drive to make sure your getting the right codes.

If they both come back id replace both. Tps can go out just in the blink of an eye. Mine decieded it was time to go out when i started my car after a hg. Why it just did.

If the plugs havnt been replaced ina while id replace them and gap them to the proper spec.

Plugs its been about 4-5k miles um about 4months time

Would the TPS throw code 51 if it went out? or not always?

But thankyou so much for the help I really do appreciate it. I will try and locate a AFM and TPS.

---------- Post added at 04:07 PM ---------- Previous post was at 04:05 PM ----------

Correct. Can even use the lexus afm electronics.

Tho i have seen the pre cars work better with the early afms.

I might just find me some 550's and go with the lexus.

My car is a Grey plug 89 So it wont matter then should run the same..

Why do you think yellow plug mk3's run better with early style AFM's?

 

[hvyman]

Idk just for some reason i have seen buddys cars do better with them. Strangly odd but it could have been just a bad later one. I wasnt doing the work.

Not always. Tps has 2 codes. 51 is the idle circuit in the tps or a nsw switch problem or a/c. 41 is tps only and anything but idl.

 

[Turbo Habanero]

Idk just for some reason i have seen buddys cars do better with them. Strangly odd but it could have been just a bad later one. I wasnt doing the work.

Not always. Tps has 2 codes. 51 is the idle circuit in the tps or a nsw switch problem or a/c. 41 is tps only and anything but idl.

ok awesome thankyou again.

 

[Turbo Habanero]

ok so i changed AFM (Came from a 87 Turbo) problem still exsist didnt seem as bad although i only have driven about 5 miles so far but it did Studder climbing upward of 5k rpms just cuts in and out very minimal but noticeable havnt noticed it yet regualar consistant driving. but like i said it comes and goes.

 

[hvyman]

What about tps?

 

[Turbo Habanero]

What about tps?

I have not found one yet still trying to locate one. but problem still persist

 

[Turbo Habanero]

.For plugs id use the bk7res ngk v power coppers., There like 1.69 from rock auto and gap them to .028.

So the plugs i need are NGK V Power Coppers (BK7RE)? or is it BK7RES?

We do not have Rock Auto here in Tucson so i have to go to checker or autozone.

 

[hvyman]

Rock auto is online and delivers. There also a vendor here and have a discount code in there section.

I forget which one fo those stores carries ngk.

bk7res p.n should be 4644

 

[Turbo Habanero]

ok i cant find any reference to BK7RES.

Part Number 4644 gives me NGK's part number BKR7E

But i cant find anything on the internet that is BK7RES just BKR7E,BK7RE

Sorry i just want to make sure i get the right plug.