im new here but my problem is when i start the truck it idles just perfect but when i accelerate it bogs down. put it in first cant take off bogs sputters. timing good. has new rotor bug wires spark plugs and fuel filter. ive read through about all the threads and havent came across this issue

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88 bronco 2 4x4 2.9 v6

what kind of fuel pressure do you have, and is the air filter clean?

yes airfilter clean dont know fuel pressure till tommorrow friday the test kits 150 to rent. post the finding tommorrow night

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88 bronco 2 4x4 2.9 v6

A decent fuel pressure tester at the local parts store is $25 or so

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1988 Ranger STX, custom built flatbed, winch, 33x 10.5 BFG mudders
1974 Suburban (AKA "the sub") lockers front & rear, 383 cu in not even close to stock motor, snowplow 37 x 12.5 HUMMV tires, 4.56 gears
1952 M38 (CJ3) Jeep - my newest project - 289 ford, hardtop, got it with not one wire in it. Hope to have it driving this year

so it seems to be fuel pressure...

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88 bronco 2 4x4 2.9 v6

An engine requires five things to run

Fuel - constant @ at the right pressure
Air
Timing and advance when demand for power is made
Spark
And in the case of all new trucks a computer

You are missing one of these things when you put the truck in gear

My best guess would be fuel pressure dropping or a lack of advance in the distributor

You can check the fuel pressure easily with a gauge

You can check the advance easy with a timing light & someone to put in gear with the brake on

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1988 Ranger STX, custom built flatbed, winch, 33x 10.5 BFG mudders
1974 Suburban (AKA "the sub") lockers front & rear, 383 cu in not even close to stock motor, snowplow 37 x 12.5 HUMMV tires, 4.56 gears
1952 M38 (CJ3) Jeep - my newest project - 289 ford, hardtop, got it with not one wire in it. Hope to have it driving this year

aye post fuel findings tommorow...

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88 bronco 2 4x4 2.9 v6

I'll check in tomorrow

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1988 Ranger STX, custom built flatbed, winch, 33x 10.5 BFG mudders
1974 Suburban (AKA "the sub") lockers front & rear, 383 cu in not even close to stock motor, snowplow 37 x 12.5 HUMMV tires, 4.56 gears
1952 M38 (CJ3) Jeep - my newest project - 289 ford, hardtop, got it with not one wire in it. Hope to have it driving this year

thanks

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88 bronco 2 4x4 2.9 v6

45 idling and 52 accelerating is fuel pressure. its a 5 speed so cant put in gear with foot on break

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88 bronco 2 4x4 2.9 v6

Do you have an OBD1 tester to pull codes?

If not I would pull the SPOUT connector and see if it does the same thing (disconnecting the SPOUT prevents any advance )

If it does the same thing then I would replace the distributor (you get a new pick-up in the distributor) and replace the TFI

If that does not. Solve the problem then you will need to chase wires & test the computer

Easy cheap stuff first - distributor is like $60-80 a new TFI is like $30-40 so you can do all this for about $100 or so

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1988 Ranger STX, custom built flatbed, winch, 33x 10.5 BFG mudders
1974 Suburban (AKA "the sub") lockers front & rear, 383 cu in not even close to stock motor, snowplow 37 x 12.5 HUMMV tires, 4.56 gears
1952 M38 (CJ3) Jeep - my newest project - 289 ford, hardtop, got it with not one wire in it. Hope to have it driving this year

you should check the fuel pressure regulator too.

goun to shop now will post finding when home

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88 bronco 2 4x4 2.9 v6

If the regulator was bad the pressure would be way high (80 psi) or way low (10 psi) it was in the normal 40-50 psi range so the regulator is good

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1988 Ranger STX, custom built flatbed, winch, 33x 10.5 BFG mudders
1974 Suburban (AKA "the sub") lockers front & rear, 383 cu in not even close to stock motor, snowplow 37 x 12.5 HUMMV tires, 4.56 gears
1952 M38 (CJ3) Jeep - my newest project - 289 ford, hardtop, got it with not one wire in it. Hope to have it driving this year

going to take it to enginge shop tuesday...

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88 bronco 2 4x4 2.9 v6