Jump to content

'89 S15 Ecm Computer Troubles

kd7vvg

Recommended Posts

kd7vvg Enthusiast

kd7vvg

Posted
Posted

I have a 1989 GMC S15 pickup with 2.8L, 5 speed, that coded out that the PROM was falty in the computer. Curent simptoms are Check Engine Soon light and Shift (arrow) light are on steady, and when engine cuts out they flicker (not code pulse). Early simptoms were a code 15 (I think it was) from the Parking Break light (I have ABR rear ABS breaks only), that coded that the computer was going out. That light only returned once more after resetting computer (but was steady light even after disengaging parking break).

 

Side note: I recently had my clutch rebuilt, and transmission replaced from used '92 S10. Those apear to work great now, but slight jerking when pickup reaches a coasting state. I think it may be related to the computer issue.

 

I reciently ordered a replacement PROM ACD#/GM#: 16074658 per ACDelco's instructions, from vpartsinc.com, but I am having the same issues. I was able to drive it for about 35min then parked and when came back it would not run (coughs and sputters). I disconnected the battery for a few hours and was able to get my pickup back home (did not allow it to stall at stops). But problem persists at restart.

I am guessing that the chip I replaced was not the culprit and that it is the other chip stamped 16051460 and 8850 on the top of the chip. NAPA could not cross reference those numbers, and ACDelco was closed for the holiday weekend.

 

Part number and details are as followes:

1989 GMC S15 pickup with 2.8L, 5 speed (stick) extended cab (VIN: 1GTCS19R0K2524075).

Computer ECM is part# 1228062 (fits other simular vehicles), large chip (EPROM?) part number on chip is ACHZ 4660 (ACDelco# 16074658), and smaller chip (don't know function) number on chip is 16051460 and 8850 (ACD# unknown).

 

PS: I NEED this pickup right away! I am moving in a couple weeks and will be working 300 miles from home for the Forest Service this summer, so I need my pickup. Could someone please help soon?!

 

Thank you,

Desperate and Defeated

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.6k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    343,007
    Total Members
    8,960
    Most Online
    Brendan C
    Newest Member
    Brendan C
    Joined

  • Who's Online   2 Members, 0 Anonymous, 885 Guests (See full list)

  • Latest Articles

  • Posts

    • Grumpy Bear
      Joke Thread

      By Grumpy Bear · Posted

    • Grumpy Bear
      The Peckish Synapse

      By Grumpy Bear · Posted

      You're better read than that Atlas. 😏   British science fiction writer Arthur C. Clarke formulated three adages that are known as Clarke's three laws, of which the third law – that "any sufficiently advanced technology is indistinguishable from magic" – is the best known and most widely cited.   Stribeck and the pivotable Hersey Number isn't voodoo nor snake oil. That part is physics. It's what marketing and bean counters do with it that is snake oil and voodoo.    Stribeck is the relationship between Hersey and the Coefficient of Friction. Within the Hersey Equation if viscosity and viscosity is 'Dependent' on.......heat.......and.......viscosity index or the temperature to viscosity slope.    Specifically Hersey is the viscosity AT THE TEMPERATURE IN THAT LOCATION FOR THAT SLOPE.   Hydrodynamic lubrication exist when the film thickness in the location is 3X the Ra roughness of the surface. This is irrespective of the hardness of the substrate. To obtain that thickness X viscosity is required for Y velocity at Z load. That's a lot of moving parts. It is also impossible to maintain in an ICE but nearly possible with a turbine under constant load.    What does that mean? Error heavy and operate light. Wear is inevitable but the rate of wear and the milage obtainable are a function of prevailing conditions and HABITS. The only penalty is viscous drag and at fractions so low as to be well worth the effort. Double the life, half the manufacturing carbon foot print. Greed is the only impediment.    The materials generated by SwRI are the RESULT not an estimation or a hypothesis.    Don't delude yourself sir, EV's have as many pitfalls as ICE's. We just don't know what they are yet and it will take longer to sort as MARKETING and GREEDY CEO's have had more time to polish the turd they are selling. 
    • Grumpy Bear
      The Peckish Synapse

      By Grumpy Bear · Posted

      You can always count on greed to prey on ignorance and stupidity.    Friend bought a 2019 Ford Flex and asked me about using Valvoline R&P 5W30 in it. Told him give the miles on it and the fact it wasn't yet using oil that it was a good plan. He uses a Valvoline quick change shop for his oil service.   First they tell him that isn't the oil the OEM recommends. He told them he didn't care what the OEM thought. Then they floated the, "But it will void your warranty"    His reply was it's a 2019, there is no warranty and informed them their knowledge of the law was lacking.    Then they tell him 'But it will ruin your motor"!.    Mine to ruin he says. Finally they give in and charge him 150% the semi-syn price    Point it the brainwash is so embedded that even the service industry is drunk on their swill. The public is right behind them. Echoing the same lies on every forum and media platform. If the end goal is indeed EV then I'd say that ship is about built. 
    • CamGTP
      Gas Prices

      By CamGTP · Posted

      Diesel hit $6.00 here today at the truck stop.   Payed $2.79 for E85 today too.
    • richard wysong
      Electrical Problem - solved

      By richard wysong · Posted

      Thanks for posting, I'm sure it will help someone

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...