I have a 1989 IROC_Z. It is very hard to start. I recently changed all 8 injectors. Any reccommendations of thing to try?

20

Asked by Aug 22, 2011 at 12:33 PM about the 1989 Chevrolet Camaro IROC Z Convertible

Question type: Maintenance & Repair

I found that doubling the cooling sensor resistance value with an external resistor on the coolant temp sensor solves the problem. I already changed the sensor , but it did not solve the problem.

7 Answers

35

check the timing belt, might have slipped a tooth. check carb/ jet, i donk know what setup you have so also check distributor/ dizzy coil, distributor off timing messes up spark plug firing. starter solenoid... i cant think of anything else

1 out of 1 people think this is helpful.
20

Hi Trent ,gulp, the fuel pump. Thanks for the input. The fuel pressure is about 22 psi which is much less than the manual # of 40 psi. I applied continuous power to the fuel pump and pinched off the return line. The fuel pressure remained the same. I am down to the fuel filter or ,gulp, the fuel pump. I think increasing the cooling sensor resistance fooled the computer to open the jets sufficently start the engine

1 out of 1 people think this is helpful.
9,445

Keep in mind that the 5.7 TPI has a 9th injector (the cold start injector).

20

The manual does not show a cold start injector for the 8 cylinder engine.

1,655

check the sensor connection terminals for corrosion and or loose fit to sensor

20

Thanks, I'll give it a try.

9,445

You are right.. I just looked it up in the manual.. I forgot that the cold start injector was phased out in '89. Early '89 models had it, later '89 models didn't.

Your Answer

Add photo

Related Questions

Camaro

Looking for a Used Camaro in your area?

CarGurus has 39,687 nationwide Camaro listings starting at $2,995.

ZIP:

Search Chevrolet Camaro Questions

Chevrolet Camaro Experts

#1 dandyoun
dandyoun
Reputation 1,590
#2 carGrrl
carGrrl
Reputation 1,120
#3 Tom Demyan
Tom Demyan
Reputation 990
View All

Related Models For Sale

Used Ford Mustang
718 Great Deals out of 39,137 listings starting at $1,000
Used Chevrolet Corvette
369 Great Deals out of 20,435 listings starting at $3,688
Used BMW 3 Series
1,830 Great Deals out of 41,344 listings starting at $1,250
Used Ford F-150
3,481 Great Deals out of 207,574 listings starting at $1,273
Used Pontiac Firebird
12 Great Deals out of 842 listings starting at $3,800
Used Jeep Wrangler
521 Great Deals out of 17,733 listings starting at $2,990

Used Cars For Sale

2017 Chevrolet Camaro For Sale
22,293 listings starting at $19,998
2016 Chevrolet Camaro For Sale
26 Great Deals out of 3,162 listings starting at $19,907
2015 Chevrolet Camaro For Sale
195 Great Deals out of 3,486 listings starting at $12,900
2014 Chevrolet Camaro For Sale
148 Great Deals out of 2,388 listings starting at $11,995
2013 Chevrolet Camaro For Sale
94 Great Deals out of 1,957 listings starting at $9,991